National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Ongoing research suggests that the average global temperature on Earth has increased by a little more than 1° Celsius so, it is important to study effect of abiotic stresses, on plant growth since change in environment causes change in behaviour or mode of expression of genes in a genetic population and limits plants in achieving their potential yield. Keeping these points in mind the adequacy of different genetic models and nature and magnitude of gene effects responsible for the expression of seed yield and important yield contributing characters were studied in mustard. Six generations of three crosses viz; Kranti × PM 25, Vardan × PM 25 and NRCHB 101 × PM 25 sown in Compact Family Block Design in timely and late sown conditions were investigated. The characters Seed yield per plant (g) and Oil content (%) were studied. Findings suggested that different characters in the same cross or same character in different crosses in different sowing conditions showed different type and magnitude of gene effects. Data recorded suggested that dominance played a major role in the inheritance of the studied traits and that the genes involved in the inheritance of these traits are predominantly dispersed in the parents with the presence of duplicate and complementary epistasis. Presence of interaction effects and duplicate epistasis suggested the possibilities of obtaining transgressive segregants in later generations. The importance of fixable and non-fixable gene action in controlling different yield and component traits was also observed. The present findings helped in deciding effective selection methods and breeding strategies to get desired improvement in seed yield and related traits for heat stress.
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