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Study on effect of different salinity on growth and morphological traits of nerium cultivars (Nerium oleander L.)
Get PDFSix cultivars of Nerium (Single Pink, Single White, Single Red, Double Pink, Double White and Double Red) were evaluated to identify the salt tolerant cultivars on basis of growth and morphological parameters. This study was carried out in Department of Horticulture, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai. These cultivars were transplanted polybags with soils of four different salt levels includes control (S1 - 0.87 dS m-1), low saline (S2 - 3.94 dS m-1), medium saline (S3 - 5.78 dS m-1) and high saline (S4 - 7.85 dS m-1) along with 2 dS m-1 saline water (by dissolving NaCl, CaCl2 and MgCl2) was irrigated based on moisture availability. The parameter viz., plant height (84.53 cm), number of leaves per plant (1.09), leaf area (1773.32 cm2), stem thickness (3.12 cm), number of branches (1.09), root length (28.87 cm), root dry weight (25.59 g), internodal length (4.01 cm) and survival percentage (94.33%) was recorded. All parameters show significant decrease with increasing salinity. In cultivar Single Red plant height was high and low height was observed in Double Pink at high salinity. Double Red cultivar shows more tolerance to all salinity levels, but Double pink have more salinity symptoms and shows less tolerance
Standardization of growing media for hardening plantlets of Dendrobium var. Thongchai Gold
Get PDFAn experiment was conducted at Horticultural Research Station, Pechiparai, Tamil Nadu Agricultural University during the year 2017-2018 to standardize the media for hardening the plantlets of Dendrobium var. Thongchai Gold. The in vitro plantlets were hardened with four different growing media and their combinations viz., charcoal, coconut husk, broken pot pieces, thermocol and their combinations as charcoal + coconut husk (1:1) , charcoal + broken pot pieces (1:1), charcoal + thermocol (1:1), coconut husk + broken pot pieces (1:1), coconut husk + thermocol (1:1), charcoal + coconut husk + broken pot pieces (1:1:1) and charcoal + coconut husk + broken pot pieces + thermocol (1:1:1:1). The results revealed that combination of coconut husk and broken pot pieces in 1:1 ratio significantly enhanced the plant height (9.02 cm) and number of leaves per plantlet (4.61) while the control recorded the plant height of (7.47 cm) with 3.50 leaves per plant. The leaf length (6.96 cm), root length (6.90 cm) and shoot girth (3.20 mm) were the highest in the treatment combination of coconut husk and broken pot pieces in 1:1 ratio. In the control the leaf length (5.52 cm), root length (5.30 cm) and shoot girth (2.20 mm) respectively. The highest survival per cent of 83.49 was recorded in the same treatment where as the survival per cent in the control was 62.55. Hence it can be concluded that the treatment combination of coconut husk and broken pot pieces in 1:1 ratio was the best medium for hardening the in vitro plantlets of Dendrobium var. Thongchai Gold
Prolonging the shelf life of jasmine (Jasminum grandiflorum) buds by chemical treatments under cold storage condition
Get PDFAim of this study is to enhance the shelf life of jasmine flower buds by application of different anti-senescence chemicals to meet out the marketing demand with improved post-harvest quality. The experimental design followed for this study is completely randomized block design with seven treatments, each replicated thrice. The harvested jasmine flowers were treated with different anti-senescence chemicals viz., Silver nanoparticle (SNP) (20ppm), Boric acid (4%), Sucrose (4%), NAA (100 ppm), BA (500 ppm), α-AIB (20µM) and packed in 200 gauge polypropylene bag without ventilation then stored in cold storage condition. Among the different anti-senescence chemical treatments silver nanoparticle (20 ppm) shows positive significant difference in freshness index, flower opening index, color retention index and maintained the shelf life up to 11 days over the control for 7 days
Study of variability and heritability in coriander (Coriandrumsativum L.) genotypes under normal and limited moisture stress condition
Get PDFDrought is very common adverse environmental factor limiting crop production in most of the tropical and subtropical regions of India, thus limiting up productivity. Limited moisture stress is the major constraint in productivity. To generate information on the effect of moisture stress on various traits which contribute for yield would be helpful in developing tolerant coriander genotypes. The result revealed that plant height; umbels per plant and biological yield per ten plants are most important yield component character in limited moisture condition
Effect of supplementary feeding on the growth and economics of feeding of kids under semi-arid conditions
Get PDFA trial was conducted at KVK- Panchmahal, Gujarat, India, to assess the effect of supplementation of concentrate and mineral mixture on growth of goats under semi-arid field condition. Thirty Gohilwadi growing kids (3-4 month old) were randomly divided into three groups of ten each. Group T1 (goats kept under sole grazing), T2 (goats fed 150 g concentrate mixture), and T3 (goats fed 150 g concentrate mixture and 10 g mineral mixture in addition to grazing). The duration of experimental feeding was 90 days in all the groups. Total weight gain in T1, T2 and T3 group was 3.22±0.98, 6.36±0.42and 7.15±0.58 kg, respectively of experiment feeding after 90 days. Average daily gain (g) was 35.83±7.22, 70.66±4.67and 79.44±6.47 in T1, T2 and T3, respectively. The kids in supplemented group (T2 and T3) achieved significantly higher body weight (17.42±.0.49 and 18.55±0.66 kg.) than the non-supplemented group (14.52±0.96). The net return from group T2 and T3 was significantly higher as compared T1. It could be concluded that supplementary feeding of concentrate and mineral mixture to the growing goats improve the growth performance of goats
Mean performance of brinjal (Solanum melongena L.) genotypes under Tamil Nadu condition
Get PDFThirteen genotypes of brinjal were collected from various places of Tamil Nadu and other states and evaluated during September 2017- January 2018. Among these, the plant height of the genotypes ranged between 72.93cm (Utkal Anushree) to 95.84 cm (Bhavani Gold), Number of branches was found be highest in IC 3749281 (7.75), ABSR 2 recorded the least number of days to first flowering (43.15 days), Karur Local showed the least value of 64.46 days for days to first harvest among the genotypes, Thevur Local recorded the maximum fruit length of 12.95 cm, Mattu Gulla showed the highest value of fruit girth (17.44 cm) and individual fruit weight (88.67 g). The maximum number of fruits was recorded in ABSR 2 (39.75), the shoot borer infestation was found to least in IC 374928-1 (11.28 %) and least value for fruit borer infestation was observed in Karur Local (14.16 %) and ABSR 2 (14.87 %). Among the genotypes evaluated, the highest marketable yield was recorded in Karur Local (2.60 kg) followed by Bhavani Gold (2.15 kg)