1,720,964 research outputs found
PENGARUH NAA DAN BAP TERHADAP REGENERASI KALUS KENTANG (Solanum tuberosum L.) HASIL RADIASI SINAR GAMMA
No full textPercobaan tentang pengaruh NAA dan BAP terhadap regenerasi kalus
kentang (Solanum tuberosum L.) hasil radiasi sinar gamma telah dilaksanakan di
Laboratorium Kultur Jaringan Tumbuhan Jurusan Budidaya Pertanian Fakultas
Pertanian Universitas Andalas pada bulan Agustus 2011 sampai dengan bulan
November 2011. Tujuannya untuk mendapatkan konsentrasi NAA dan BAP yang
terbaik untuk menyokong regenerasi kalus kentang hasil radiasi sinar gamma.
Percobaan ini disusun berdasarkan Rancangan Acak lengkap (RAL)
dengan 2 faktor pertama : konsentrasi NAA 1,0, 2,0, 3,0, dan 4,0 ppm dan faktor
kedua: konsentrasi BAP 1,0, 2,0, 3,0, 4,0 dan 5,0 ppm. Variabel yang diamati
adalah diameter kalus, bobot kalus, tekstur kalus, dan warna kalus. Data hasil
pengamatan dianalisis ragam dengan uji F, bila F hitung besar dari F tabel 5 %
dilanjutkan dengan uji Duncan’s New Multipe Range Test DNMRT pada taraf
nyata 5 %.
Hasil penelitian ini didapatkan bahwa tidak ada interaksi antara NAA dan
BAP terhadap regenerasi kalus kentang hasil radiasi sinar gamma menjadi planlet.
Warna kalus yang dihasilkan adalah coklat kehitaman, hijau kecoklatan, putih
kecoklatan, coklat dan coklat kekuningan. Tekstur kalus yang terbentuk adalah
kompak.
Kata kunci : NAA, BAP, Kalus Kentang (Solanum tuberosum L.) dan Sinar
gamm
Effect of Mycorrhizae Inoculation and Maggot Compost on Sunflower Development on Marginal Land
No full textThe use of inorganic fertilizers for a long time has an adverse impact on soil quality and the environment. For this reason, an agricultural approach that uses potential natural resources is needed. One of them is by applying agriculture in an organic concept that utilizes biological materials such as mycorrhiza and the addition of maggot compost. The purpose of this study was to determine the effect of mycorrhizal inoculation and maggot compost on the development of sunflowers on marginal land. In practice, the study used a randomized block design consisting of two factors, namely mycorrhizal inoculum and maggot compost which was repeated 3 times. The results of the study showed that mycorrhizal inoculation and maggot compost had an influence on the development of sunflowers such as the time of full bloom, ribbon flower diameter, tube flower diameter, number of seeds planted and weight of 100 seeds on marginal land. the higher the dose of mycorrhiza and maggot compost applied, the increase in each parameter observed in sunflower development on marginal land
Effect of Mycorrhizae Inoculation and Maggot Compost on Sunflower Development on Marginal Land
No full textThe use of inorganic fertilizers for a long time has an adverse impact on soil quality and the environment. For this reason, an agricultural approach that uses potential natural resources is needed. One of them is by applying agriculture in an organic concept that utilizes biological materials such as mycorrhiza and the addition of maggot compost. The purpose of this study was to determine the effect of mycorrhizal inoculation and maggot compost on the development of sunflowers on marginal land. In practice, the study used a randomized block design consisting of two factors, namely mycorrhizal inoculum and maggot compost which was repeated 3 times. The results of the study showed that mycorrhizal inoculation and maggot compost had an influence on the development of sunflowers such as the time of full bloom, ribbon flower diameter, tube flower diameter, number of seeds planted and weight of 100 seeds on marginal land. the higher the dose of mycorrhiza and maggot compost applied, the increase in each parameter observed in sunflower development on marginal land
Effectiveness Test of Local Arbuscular Mycorrhizal Fungi (AMF) and Cocoa Waste Compost on the Growth of Cocoa Seedlings (Theobroma cacao. L) in Former Mining Sites
Full text linkThere is ample opportunity for cocoa (Theobroma cacao L.) plantations because the world demand for cocoa increases every year. Cocoa plants bear fruit every year without knowing the season so cocoa cultivation provides promising prospects. The demand for cocoa must be balanced with increased in production from the cultivation scale from providing seeds to expanding cocoa planting land. The experimental design used in this study was a two-factor Randomised Group Design, namely the provision of AMF F0 (without AMF) and F1 (with AMF). The second factor is cocoa waste compost in planting media (v/v) with five levels, namely k0 (0%), k1 (5%), k2 (10%), k3 (15%),and k4 (20%). The aim of the research was to see the effectiveness of AMF and cocoa waste compost on the growth of cocoa seedling. Based on the research results, it can be concluded that the treatment of FMA can increase plant height, root volume, root dry weight, and percentage of colonized roots. Cocoa seedlings gave the best response with a dose of 0% cocoa waste compost with AMF treatment, with an average height of 60.19 cm . The percentage of AMF colonization is high at 44.6%. The final soil analysis showed an increase in P-available pH and soil Ald with mycorrhiza and cocoa shell compost treatment at a dose of 10
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Identification and selection of local carrot seeds (Daucus carota L) for seed sources
Full text linkCarrot (Daucus carota) is one of the most important root vegetables in Indonesia contains high levels of sugars, rich in β-carotene (pre-vitamin A), ethylene, and high levels of proteins. Carrot was reported as a medicinal plant in the gardens and an essensial part of the food coloring industry. In fact the seeds of carrot contain estrogen, and in some cultures are used as an effective method of contraception. Carrot have been promoted as a future ingredient in biofuels, the carrot seed oil has proved to be an excellent lubricant in industrial applications, appears in multitude of skin and hair care products and produced luteolin. Carrot grows vegetatively in the first season and produced seed in the second. The yield and quality of carrot grown is determined by the seed production technique which can flourish carrot seed production as well as to compensate high cost of carrot seed. The use of local varieties of carrot as seed source increase productivity through higt adaptability. The aim of research is to obtain the best possible tuber characteristic as a qualified seed source. Research was conducted by the exploration method of carrot tuber in Lembang Jaya area and study the morphological characters. The exploration result obtained 8 carrot tuber locations. The carrot tuber with a chantenay type had the best growth and yields of the seeds to develop. 
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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