Czasopisma Uniwersytetu Przyrodniczy w Lublinie
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A comparative study of distinguishing apple cultivars and a clone based on features of selected fruit parts and leaves using image processing and artificial intelligence
Get PDFThis study aimed to identify the most useful white-fleshed apple samples to distinguish apple cultivars and a clone. Whole apples, apple slices, seeds, and leaves belonging to ‘Free Redstar’, clone 118, ‘Ligolina’, ‘Pink Braeburn’, and ‘Pinokio’ were imaged using a digital camera. The texture parameters were extracted from images in color channels L, a, b, R, G, B, X, Y, Z, U, V, and S. The classification models were built using traditional machine learning algorithms. Models developed using selected image seed textures allowed the classification of apple cultivars and a clone with the highest average accuracy of up to 97.4%. The apple seeds ‘Free Redstar’ were distinguished with the highest accuracy, equal to 100%. Machine learning models built based on the textures of apple skin allowed for the clone and cultivar classification with slightly lower correctness, reaching 94%. Meanwhile, the average accuracies for models involving selected flesh and leave textures reached 86.4% and 88.8%, respectively. All the most efficient models for classifying individual apple fruit parts and leaves were developed using Multilayer Perceptron. However, models combining selected image textures of apple skin, slices (flesh), seeds, and leaves produced the highest average accuracy of up to 99.6% in the case of Bayes Net. Thus, it was found that including features of different parts of apple fruit and apple leaves in one model can allow for the correct distinguishing of apples in terms of cultivar and clone.This study aimed to identify the most useful white-fleshed apple samples to distinguish apple cultivars and a clone. Whole apples, apple slices, seeds, and leaves belonging to ‘Free Redstar’, clone 118, ‘Ligolina’, ‘Pink Braeburn’, and ‘Pinokio’ were imaged using a digital camera. The texture parameters were extracted from images in color channels L, a, b, R, G, B, X, Y, Z, U, V, and S. The classification models were built using traditional machine learning algorithms. Models developed using selected image seed textures allowed the classification of apple cultivars and a clone with the highest average accuracy of up to 97.4%. The apple seeds ‘Free Redstar’ were distinguished with the highest accuracy, equal to 100%. Machine learning models built based on the textures of apple skin allowed for the clone and cultivar classification with slightly lower correctness, reaching 94%. Meanwhile, the average accuracies for models involving selected flesh and leave textures reached 86.4% and 88.8%, respectively. All the most efficient models for classifying individual apple fruit parts and leaves were developed using Multilayer Perceptron. However, models combining selected image textures of apple skin, slices (flesh), seeds, and leaves produced the highest average accuracy of up to 99.6% in the case of Bayes Net. Thus, it was found that including features of different parts of apple fruit and apple leaves in one model can allow for the correct distinguishing of apples in terms of cultivar and clone
First report of Robustodorus subtenuis on garlic plants in Poland
Get PDFDuring the observation of a garlic plantation, a sample consisting of plants with symptoms of growth inhibition and the soil surrounding the roots was collected. Phytophagous nematodes were isolated from the soil sample as well as the garlic plant shoots, with an average density of 75 individuals per 100 mL. Microscope slides were prepared from adult individuals and subjected to morphological and morphometric analysis, as well as DNA examination. It was demonstrated that the examined nematodes belong to the species Robustodorus subtenuis. Both the female and male nematodes differed from individuals previously found in the cultivation of Narcissus and Gladiolus. On average, R. subtenuis females have shorter bodies and longer tails, with the averages calculated for the nematode population from the soil being slightly lower than the average values for nematodes from the garlic shoots. Additionally, the females found in the soil had a shorter distance from the lip region to the vulva and a shorter post-vulval sac, the length of which constituted 32 to 45% of the distance from the vulva to the anus. On average, the male bodies were shorter and had longer tails. They were also wider at the level of the anus. The average body length of males isolated from the soil, like that of the females, was lower than the average for individuals isolated from the garlic shoots. Variations in the influence of the host plant on the morphometry of the parasitic nematodes were observed. This is the first report of R. subtenuis colonizing garlic plants in Poland.During the observation of a garlic plantation, a sample consisting of plants with symptoms of growth inhibition and the soil surrounding the roots was collected. Phytophagous nematodes were isolated from the soil sample as well as the garlic plant shoots, with an average density of 75 individuals per 100 mL. Microscope slides were prepared from adult individuals and subjected to morphological and morphometric analysis, as well as DNA examination. It was demonstrated that the examined nematodes belong to the species Robustodorus subtenuis. Both the female and male nematodes differed from individuals previously found in the cultivation of Narcissus and Gladiolus. On average, R. subtenuis females have shorter bodies and longer tails, with the averages calculated for the nematode population from the soil being slightly lower than the average values for nematodes from the garlic shoots. Additionally, the females found in the soil had a shorter distance from the lip region to the vulva and a shorter post-vulval sac, the length of which constituted 32 to 45% of the distance from the vulva to the anus. On average, the male bodies were shorter and had longer tails. They were also wider at the level of the anus. The average body length of males isolated from the soil, like that of the females, was lower than the average for individuals isolated from the garlic shoots. Variations in the influence of the host plant on the morphometry of the parasitic nematodes were observed. This is the first report of R. subtenuis colonizing garlic plants in Poland
Preventive effects of systemic Pistacia eurycarpa Yalt. administration on alveolar bone loss and oxidative stress in rats with experimental periodontitis
No full textObjective: This study aimed to investigate the effects of systemic administration of P. eurycarpa Yalt. plant extract on alveolar bone loss and oxidative stress biomarkers in gingival tissue in a rat model of experimental periodontitis. Methodology: 32 male Wistar albino rats, weighing 200-250 g, were divided into four groups (n=8): Healthy control (HC), Experimental periodontitis control (EPC), Experimental periodontitis 400 mg/kg (EP400), Experimental periodontitis 800 mg/kg (EP800). Experimental periodontitis was induced using the ligating method. Distilled water was administered to the HC and EPC groups and the plant extract was administered to the EP400 and EP800 groups by oral gavage at doses of 400 mg/kg and 800 mg/kg, respectively. The rats were sacrificed on the 15th day. The values of glutathione peroxidase GSH-Px, malondialdehyde (MDA), superoxide dismustase (SOD), interleukin-113 (IL-113), interleukin-10 (IL-10), total antioxidant status (TAS), total oxidant status (TOS), oxidative stress index (OSI) in the gingival tissues were analyzed by ELISA tests. Alveolar bone loss was assessed using micro-CT images of the maxilla. Results: Although the IL-113, TOS, OSI results of the healthy control group were lower than those of the other groups, the TAS values were higher (p0.05). Alveolar bone loss was significantly reduced in the extract groups compared to the EPC group (p<0.001). Conclusion: Within the limitations of this study, it was observed that the systemic P. eurycarpa extract application reduced alveolar bone loss in a rat model of experimental periodontitis. Further studies are needed to elucidate the beneficial effectsScientific Research Projects Coordination Unit of Inonu University [TDH-2021-2330]This study was funded by the Scientific Research Projects Coordination Unit of Inonu University, under project number: TDH-2021-2330
Distribution of the Prevalence of Human Leukocyte Antigen (HLA)-B*57:01 Positivity in HIV-1 Infected Individuals and Its Effects on Treatment: Türkiye Map-Buhasder Working Group
No full textHuman immunodeficiency virus (HIV)/acquired immundeficiency syndrome (AIDS) is a critical global public health problem that significantly affects both life expectancy and the overall quality of life of in dividuals in all age groups. The landscape of HIV infection has changed significantly in recent years due to the introduction of effective combination antiretroviral therapies (ART). A key component of first -line ART regimens for HIV treatment is abacavir, a nucleoside HIV reverse transcriptase inhibitor. Although ab acavir is effective in suppressing viral replication and managing disease, its clinical utility is overshadowed by the potential for life -threatening hypersensitivity reactions in HLA-B*57:01-positive patients. In our country, local data obtained from various centers regarding the prevalence of HLA-B*57:01 in HIV -1 -infected patients are available. In this study, it was aimed to determine the prevalence of the HLA-B*57:01 genotype in HIV -infected patients who were followed up and treated in many regions of our country. This retrospective study consists of the data of the patients aged 18 years and over diagnosed with HIV -1 infection between 01.01.2019 and 31.07.2022. Age, gender, place of birth, mode of transmission of the disease, death status, CD4+ T cell count and HIV RNA levels at the first clinical presentation, HLA-B*57:01 positivity, and the method used, clinical stage of the disease, virological response time with the treatment they received were recorded from the patient files. Data were collected from 16 centers and each center used different methods to detect HLA-B*57:01. These methods were sequence -specific oligonucleotide probe hybridization (SSOP), DNA sequence -based typing (SBT), single -specific primer-polymerase chain reaction (SSP-PCR), allele -specific PCR (AS-PCR) and quantitative PCR (Q-PCR). A total of 608 HIV -infected individuals, 523 males (86%) and 85 females (14%), were included in the study. The mean age of the patients was 36.9 +/- 11.9 (18-73) years. The prevalence of HLA-B*57:01 allele was found to be 3.6% (22 patients). The number of CD4+ T lymphocytes in HLA-B*57:01 allele -positive patients was > 500/ mm(3) in 10 patients (45.5%), while the number of CD4+ T lymphocytes in HLA-B*57:01 negative pa- tients was > 500/mm(3) in 216 patients (36.9%) (p> 0.05). Viral load at the time of diagnosis was found to be lower in patients with positive HLA-B*57:01 allele but it was not statistically significant (p> 0.05). Although different treatment algorithms were used in the centers following the patients, it was observed that the duration of virological response was shorter in HLA-B*57:01 positive patients (p= 0.006). Although the presence of the HLA-B*57:01 allele has a negative impact due to its association with hypersensitivity, it is likely to continue to attract interest due to its association with slower progression of HIV infection and reduced risk of developing AIDS. In addition, although the answer to the question of whether it is cost-effective to screen patients for HLA-B*57:01 before starting an abacavir-containing ART regimen for the treatment of HIV infection is being sought, it seems that HIV treatment guidelines will continue to recommend screening to identify patients at risk in this regard
Impact of pandemic and socioeconomic influences on decision-making for emergency ostomy procedures: Key factors affecting hospital visit decisions
No full textEmergency surgeries are linked with increased morbidity and reduced life expectancy, often associated with low socioeconomic status, limited access to healthcare, and delayed hospital admissions. While the influence of socioeconomic status on elective surgery outcomes is well-established, its impact on emergency surgeries, including ostomy creation and closure, is less clear. This study aimed to explore how the pandemic and socioeconomic status affect emergency ostomy procedures, seeking to determine which has a greater effect. It emphasizes the importance of considering socioeconomic factors in patient care pathways for ostomy procedures. A total of 542 patients who underwent emergency ostomy formation between 2016 and 2022 were retrospectively analyzed and divided into pre-pandemic and pandemic periods. The pre-pandemic and pandemic periods were compared between themselves and against each other. Demographic data (age and sex), comorbidities, socioeconomic status, etiology of the primary disease, type of surgery, stoma type, length of hospital stay, ostomy closure time, and postoperative complications were retrospectively analyzed for all patients. In total, 290 (53%) patients underwent surgery during the pandemic period, whereas 252 (47%) underwent surgery during the pre-pandemic period. Emergency surgery was performed for malignancy in 366 (67%) patients. The number of days patients underwent ostomy closure was significantly higher in the low-income group (P = .038, 95% CI: 293,2, 386-945). The risk of failure of stoma closure was 3-fold (95% CI: 1.8-5.2) in patients with metastasis. The risk of mortality was 12.4-fold (95% CI: 6.5-23.7) when there was failure of stoma closure. When compared to pandemic period, the mortality risk was 6.3-fold (95% CI: 3.9-10.2) in pre-pandemic period. Pandemic patients had a shorter hospital stay than before the pandemic (P = .044). A high socioeconomic status was significantly associated with early hospital admission for ostomy closure, and lower probability of mortality. More metastases and perforations were observed during the pandemic period and mortality was increased during pandemic and in patients without ostomy closure. The socioeconomic status lost its effect in cases of emergency ostomy creation and had no impact on length of hospital stay in either the pre-pandemic or pandemic period
The reliability and validity of the balance tests in hearing-impaired athletes
No full textBackgroundIt is known that balance is affected in hearing-impaired athletes and its effects on performance. However, studies on the reliability and validity of scales evaluating balance are insufficient.AimTo analyze and demonstrate the effectiveness of various clinical tests using assessment balance for hearing-impaired athletes.MethodThe study included 60 elite athletes (aged between 18 and 25) with (n = 30) and without (n = 30) hearing impairment. The static balance was evaluated with the Flamingo Test (FT) and the dynamic balance with the Functional Reach Test (FRT), Four-Step Square Test (FSST), Star Excursion Balance Test (SEBT), and Y Balance Test (YBT). All balance tests were repeated at 1-week intervals. Test-retest reliability, known-group validity, and predictive validity of the scales were investigated.ResultAll balancing tests demonstrated strong test-retest reliability. FT and FSST had known-group and predictive validity. While FRT and the components of both YBT and SEBT involving anterior reaching were not valid tests for hearing-impaired individuals, YBT and SEBT had validity considering the composite score and other components.ConclusionIt was revealed that the balance of hearing-impaired athletes was comparable to the balance of healthy athletes in test conditions in which visual information could be used effectively. For this reason, it is important to consider the visual information factor when evaluating the balance of hearing-impaired athletes. Additionally, taking into account time and tiredness, FT for static balance and FSST for dynamic balance may be helpful to evaluate hearing-impaired athletes
Vocalization of traditional Turkish folk music works with international art music terminology in vocational music education
No full textBu çalışmada, Geleneksel Türk halk müziğinin temelini oluşturan sözlü ve sözsüz eserlerin, dünya genelinde yaygın şekilde kullanılan uluslararası sanat müziği terimleriyle yeniden notaya alınarak seslendirilmesi ve bu sayede mesleki müzik eğitimi verilen eğitim kurumlarında kullanılabilirliği konusunda yararlı verilerin elde edilmesi amaçlanmıştır. Bu araştırma; problemin kapsamına uygun olarak "Betimsel Araştırma Modeli" ve deneysel bölümde ise "kontrol grupsuz ön test son test" modelindedir. Araştırmanın çalışma grubu Kafkas Üniversitesi Devlet Konservatuvarında lisans eğitimi gören 20 öğrenciden oluşmaktadır. Çalışma grubundaki öğrencilere video destekli olarak hazırlanan 6 haftalık Türk halk müziği eserlerine yönelik nüans çalışma programı uygulanmıştır. Program öncesi ve sonrasında çalışma grubu öğrencilerinin bireysel ve toplu olarak eserleri seslendirmeleri istenmiştir ve yapılan seslendirmeler video ve ses kayıt cihazları ile kayıt altına alınarak arşivlenmiştir. Kırık hava türü için "Çaya İndim Taşı Yok", oyun havası türü için "Halay (Erzincan Halayı)" ve uzun hava türü için "Aşağıki Mehlenin Allı Gelini" isimli eserler belirlenmiştir. Verilerin toplanmasında araştırmacının kaydettiği ön test-son test videoları kullanılmıştır. Araştırmanın nicel verilerinin elde edilmesi ve bulgulara ulaşılması sürecinde ön test-son test derecelendirme formları kullanılmıştır. Uzman görüşüne sunulan derecelendirme formları ile araştırmanın nicel verileri elde edilmiştir ve bilgisayar istatistik paket programı aracılığıyla istatistiksel analizler yapılmıştır. Nitel aşamada ise; çalışma grubundaki bireylere uygulanan, uzman görüşleri doğrultusunda hazırlanan "Yarı Yapılandırılmış Görüşme Formu" kullanılmış ve formlardan elde edilen veriler nitel analiz yöntemlerinden betimsel analizle çözümlenmiştir. Elde edilen verilerin ve bulguların analizleri sonucunda "Kırık Hava", "Oyun Havası" ve "Uzun Hava" türlerinin tamamında ön test-son test puanları arasında anlamlı düzeyde olumlu farklılıklar gözlemlenmiştir. Çalışma grubunda yer alan öğrencilerle yapılan görüşmelerden elde edilen verilere göre; eserlerin uluslararası sanat müziği terimleriyle seslendirilmesi uygulamasının katılımcı bireyler üzerinde genel olarak olumlu bir etki bıraktığı bulgusuna ulaşılmıştır.In this study, it is aimed to re-notate and vocalize the verbal and non-verbal works that form the basis of Traditional Turkish Folk Music with the terms of International Art Music, which is widely used throughout the world, and thus to obtain useful data on their usability in educational institutions where vocational music education is given. This research is "Descriptive Research Model" in accordance with the scope of the problem and "pre-test post-test without control group" model in the experimental part. The study group of the research consists of 20 undergraduate students studying at Kafkas University State Conservatory. A 6-week video-assisted nuance study program for Turkish folk music pieces was applied to the students in the study group. Before and after the program, the students were asked to perform the works individually and collectively, and the performances were recorded and archived with video and voice recorders. The pieces named "Çaya İndim Taşı Yok" for the rythmic folk song type, "Halay (Erzincan Halay)" for the traditional dance music type and "Aşağıki Mehlenin Allı Gelini" for the unmetered folk song type were used. Pre-test-post-test videos recorded by the researcher were used to collect the data. In the process of obtaining the quantitative data of the study and reaching the findings, pretest-posttest rating forms were used. The quantitative data of the study were obtained with the rating forms submitted to expert opinion and statistical analyzes were performed. In the qualitative stage; "Semi-structured Interview Form", which was prepared in line with expert opinions and applied to the individuals in the study group, was used and the data obtained from the forms were analyzed by descriptive analysis from qualitative analysis methods. As a result of the analysis of the data and findings, significant positive differences were observed between the pre-test and post-test scores in all of the " Rythmic Folk Song ", "Traditioanal Dance Music" and "Unmetered Folk Dong" genres. According to the data obtained from the interviews with the students in the study group, it was found that the practice of vocalizing the works with International Art Music terms had a generally positive effect on the participating individuals
Böbrek İskemi-reperfüzyon Modeli Oluşturulan Sıçanlarda Astaksantinin Otofaji Üzerine Etkisinin Araştırılması
No full textObjective: The aim of this study was to investigate the effect of various astaxanthin (ATX) doses on oxidative damage and autophagy in renal ischemia-reperfusion (I/R) injury-modeled rats. Methods: The rats were divided into five groups: sham group (n=8), I/R (n=8), I/R + 5 mg/kg ATX (n=8), I/R + 10 mg/kg ATX (n=8), and I/R + 25 mg/ kg ATX (n=8) groups. ATX was dissolved in 5 mg/kg, 10 mg/kg, and 25 mg/ kg olive oil for 7 days and administered to the rats in the experimental group. Sham and I/R groups were also administered ATX solution (olive oil) via oral gavage for 7 days. Renal ischemia reperfusion was induced in all rats except the sham group after the last dose was administered on the 7th day. Reperfusion was conducted for 24 hours after 45 minutes of ischemia. Results: Blood samples were collected, and kidney tissue were incised for biochemical and histological analyses. Superoxide dismutase (SOD) and total antioxidant status (TAS) were significantly lower in the I/R group than in the sham group (p<0.05), whereas malondialdehyde (MDA) and total oxidant status (TOS) values were higher (p<0.05). It was determined that SOD and TAS increased and MDA and TOS decreased in the ATX-administration groups compared with the I/R group, independent of the dose (p<0.05). In the 25 mg/kg ATX + I/R group, Beclin-1 and LC3? immunoreactivities were significantly higher than those in the other groups (p<0.05). The lowest p62 immunoreactivity was observed in the 25 mg/kg ATX + I/R group. Conclusions: ATX had a protective effect on kidney function and against oxidative damage. Furthermore, high-dose ATX administration protected kidney tissue via autophagy induction in this study. © 2024 The Author.TYL-2020-2009the Research Fund of Inonu University, Project No: TYL-2020-2009
Wpływ podpowierzchniowego wnoszenia nawozu mineralnego na plon, skład chemiczny ziarna oraz wybrane właściwości gleby w warunkach bezpłużnej uprawy pszenicy ozimej
Get PDFThe present study was conducted during the period 2015–2017 based on a field experiment established in 2014 in the village of Rogów, Zamość County, Poland. The aim of this experiment was to evaluate the effect of subsurface application of different rates of a mineral compound fertilizer named Polifoska®6 NPK(S) 6-20-30(7) on some soil physico-chemical and biological properties, as well as on winter wheat yield and yield quality in crop rotation soybean – winter wheat – maize under reduced tillage conditions. The mineral fertilizer was applied at a rate of 200 and 400 kg∙ha–1, and it was spread evenly under the soil surface at a depth range of 10–30 cm according to the operation of a soil loosener and fertilizer spreader attachment. Plots with surface fertilizer application were the control treatment. After harvest, yield and yield components of the winter wheat were estimated. A chemical analysis of grains was also performed in order to determine the quality of harvested yield. In soil samples taken every year, Corg content in the 0–30 cm soil layer was determined, whereas pH and phosphorus, potassium, and magnesium contents were determined in soil samples taken to a depth of 90 cm (broken down into 3 layers every 30 cm). Additionally, number and biomass of earthworms were determined.Winter wheat grain yield significantly varied only between years. In the treatments with deep application of the fertilizer Polifoska®6, the grain P and K content was found to increase in comparison with the treatment where winter wheat was surface fertilized. Furthermore, the higher rate of mineral fertilizer caused an increase in grain N, P, K and Mg content compared to the half lower rate. The Corg content in the 0–30 cm topsoil layer distinctly increased during the successive years of reduced till cropping. The lowest pH values were determined in the 0–30 cm soil layer. At this level, a higher P and K content was also found than in the soil layers with a depth of 30–60 cm and 60–90 cm, respectively.In the treatments with deep application of the fertilizer Polifoska®6, a general trend towards a higher number of earthworms was found in comparison with surface fertilization. A slight increase in the biomass of these organisms was also recorded. Furthermore, application of the higher rate of mineral fertilizer promoted a higher earthworm biomass.Badania przeprowadzono w latach 2015–2017, w oparciu o eksperyment polowy założony jesienią 2014 roku w miejscowości Rogów, powiat zamojski. Celem doświadczenia była ocena wpływu podpowierzchniowego wprowadzania zróżnicowanych dawek wieloskładnikowego nawozu mineralnego Polifoska®6 NPK(S) 6-20-30(7) na wybrane właściwości fizyko-chemiczne i biologiczne gleby, a także plon i jakość plonu ziarna pszenicy ozimej wysiewanej w zmianowaniu soja – pszenica ozima – kukurydza w warunkach uprawy bezorkowej. Nawóz mineralny w dawce 200 i 400 kg∙ha–1 wnoszono pod powierzchnię gleby równomiernie w zakresie 10–30 cm głębokości pracy elementu wysiewająco-spulchniającego. Obiekt kontrolny stanowiły poletka z powierzchniową aplikacją nawozu. Po zbiorze oceniono plon i elementy struktury plonu ziarna pszenicy. Wykonano również analizy chemiczne ziarna celem określenia jakości zebranego plonu. W pobieranych corocznie próbach glebowych oznaczano zawartość Corg w warstwie 0–30 cm, natomiast w glebie pobieranej do głębokości 90 cm (z podziałem na 3 warstwy co 30 cm) określono pH oraz zawartość fosforu, potasu i magnezu. Dodatkowo określono liczbę i biomasę dżdżownic.Plon ziarna pszenicy ozimej był istotnie zróżnicowany tylko w latach badań. W obiektach z wgłębnym wniesieniem nawozu Polifoska®6 odnotowano wzrost zawartości P i K w ziarnie w porównaniu z wariantem, w którym pszenicę ozimą nawożono powierzchniowo. Wyższa dawka nawozu mineralnego spowodowała ponadto wzrost zawartości N, P, K i Mg w ziarnie w porównaniu z dawką niższą o połowę.Zawartość Corg w powierzchniowej 0–30 cm warstwie gleby wyraźnie zwiększała się w kolejnych latach prowadzenia uprawy bezpłużnej. Najniższe pH określono w 0–30 cm warstwie gleby. W tym poziomie stwierdzono również większą zawartość P i K niż w warstwach gleby o głębokości 30–60 cm i 60–90 cm.W obiektach z wgłębnym sposobem aplikacji nawozu Polifoska®6 stwierdzono ogólną tendencję występowania większej liczby dżdżownic w porównaniu z nawożeniem powierzchniowym. Odnotowano również nieznaczny wzrost biomasy tych organizmów. Występowaniu większej masy dżdżownic sprzyjało ponadto zastosowanie wyższej dawki nawozu mineralnego
Charakterystyka zasobów genetycznych jarej pszenicy twardej (Triticum turgidum L. subsp. durum (Desf.) van Slageren) pod względem wybranych cech użytkowych
Get PDFThe paper presents the assessment of variability of selected useful traits, such as: plant height, number and weight of grains per spike, 1000 grain weight and protein content in grain. 2078 accessions of spring hard wheat collected in the collection depending on geographical origin (local, foreign and unknown origin accessions) were examined. They were evaluated in years 1977–2020 in 3-year cycles of one replication field experiments conducted at the Experimental Field Station of the University of Life Sciences in Czesławice near Nałęczów. The conducted analyses show that the examined accessions were diversed in terms of the analyzed useful characteristics both in individual groups as well as within the entire population, and the highest variability was characterized by: the weight of grains per spike and the plant height. More over in each of the three analyzed groups, accessions with a high number (>50 pcs.) and grain weight (>2.1 g) and a 1000 grain weight (>55 g) can be indicated, which makes them a valuable initial material in practical hard wheat breeding in Poland.W pracy przedstawiono ocenę zmienności wybranych cech użytkowych, takich jak: wysokość roślin, liczba i masa ziarn z kłosa, masa 1000 ziarn oraz zawartość białka w ziarnie. Zbadano 2078 obiektów jarej pszenicy twardej zgromadzonych w kolekcji w zależności od pochodzenia geograficznego (obiekty krajowe, zagraniczne oraz o nieznanym pochodzeniu). Były one oceniane w latach 1977–2020 w 3-letnich cyklach jednopowtórzeniowych doświadczeń polowych prowadzonych w Gospodarstwie Doświadczalnym Uniwersytetu Przyrodniczego w Czesławicach koło Nałęczowa. Z przeprowadzonych analiz wynika, że badane obiekty były zróżnicowane pod względem analizowanych cech użytkowych zarówno w poszczególnych grupach, jak i w obrębie całej populacji, a najwyższą zmiennością charakteryzowały się: masa ziarn z kłosa oraz wysokość roślin. Ponadto w każdej z trzech analizowanych grup można wskazać obiekty o wysokiej liczbie (>50 szt.) i masie ziarn z kłosa (>2,1 g) oraz masie 1000 ziarn (>55 g), co czyni z nich wartościowy materiał wyjściowy w praktycznej hodowli pszenicy twardej w Polsce