Stability and correlation studies for yield and seed developmental traits in upland cotton (Gossypium hirsutum L.)
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Date
2018
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CCSHAU
Abstract
The present investigation entitled “Stability and Correlation Studies for Yield and Seed Developmental Traits in Upland Cotton (Gossypium hirsutum L.)” were evaluated in three varieties H 1098 – I, H 1300 and H 1316 under six environments (three sowing periods i.e. early, normal and late sown conditions in year 2015 & 2016). Observations were recorded for seed quality traits, biochemical traits, fiber quality traits, seed cotton yield component traits and meteorological parameters. There were significant differences among the varieties for all traits in all the six environments. The early sown condition was best for high seed germination (%), high sugar (%), protein (%), oil (%) and low gossypol (%), high fiber quality traits, good boll retention (%) as well as for seed cotton yield traits. The time period between 2nd week of July to mid August was best for high seed germination. Seed germination (%) was negatively correlated with Tmax and sunshine hours while it was positively correlated with Tmin, RHm and RHe. and rainy days. Seed germination was positively correlated with vigor index- I and vigor index – II and with protein (%). Early sown conditions were good for desirable biochemical parameters. Fiber quality traits were least effected by environmental factors. Seed cotton yield per plant was significant and positively correlated with plant height, number of bolls per plant, number of seeds per boll, ginning outturn and lint yield per plant. High direct effect was observed for number of monopods / plant, number of seeds / boll, number of bolls / plant, ginning outturn, lint yield / plant and days to boll bursting
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