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Subject: Seed Science and Technology × Author: Amit Kumar × End date: 2009 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    Standardization of picking time and comparative study of seed quality parameters of parents, hybrids and F2 seeds of bell pepper (Capsicum annuum L.)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2005-07) Amit Kumar; Rajendra Prasad
    The present investigation was conducted during Kharif, 2004, at Hill Campus, Ranichauri with six parents and sixteen hybrids. The experiment was laid out in randomized block design with three replication. Characters were studied for genetic variability viz. Plant growth habit, shape of fruits, fruit colour at marketable maturity, days to first picking, plant height, fruit length, fruit diameter, fruit weight, number of fruits per plant, fruit yield per plant, seed yield per plant, TSS, ascorbic acid and chlorophyll content. Seed quality parameters viz. number of seed per fruit, weight of 100 seeds, germination per cent, seedling vigour index I and vigour index II under four pickings to compute comparison of different picking for seed quality and comparative study of parents, hybrids and F2 seeds for different seed quality parameter. Character associations between seed quality parameters were also computed for dependency of one character to on another. Data were analyzed statistically to work out for various traits and their comparative account were made. Significant differences in different characters were found for morphological and biochemical parameters. The days to first picking ranged from 53 days (HC X Pz ) to 81 days(SSP), Plant height 24.66 cm (Pg X Pz) to 49.66 cm (Pz X Pg), fruit length 4.01 cm (Oshrogion) to 6.39 cm (Osh X SSP), number of fruits per plant 9.50(HC X Pz) to 3.12 (SSP X HC).Chlorophyll „a‟ was found to be maximum in Osh X SSP (9.48) and minimum in Pg X SSP (2.5). Chlorophyll „b‟ ranged from 1.738 (Pg X SSP) to 5.98 (Pg X Yw). Comparative study of four picking showed maximum germination per cent in III picking, maximum 100 seed weight in III Picking. Seed vigour index I was maximum in second picking and highest vigour index II in fourth picking. Comparison for seed quality parameters for parents, hybrids and F2 showed the significant superiority of F1 over the F2 with respect of germination per cent but there was no significant differences recorded among parents hybrids and F2 for vigour index I and vigour index II. The character associations were also made for morphological parameter with seed quality yield and positive significant association fruit length, fruits diameter, flesh thickness, and number of fruits per plant with seed yield per plant. Similarly phenotypic correlation of seedling parameters was also made among germination per cent, shoot length, root length, fresh weight, Dry weight and vigour index I and vigour index II. Number of seedling character also showed positive association. From the present investigation it can be concluded that various morphological trait can be used to asses fruit and seed quality more precisely along with the biochemical parameters. Present study clearly showed that picking time is definitely going to affect the seed quantity and quality. Laboratory techniques also showed helpful method to judge the seed quality. Character association can be used as an alternative to estimate the seed quality and quantity. It is difficult to give general recommendation with respect to picking to all seed quality and quantity attributes but more précised study can be done with respect to genotype and case specific.