Adaptability Studies In Cotton ( Gossypium Hirsutum L.)
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Date
1985
Authors
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Mahatma Phule Krishi Vidyapeeth, Rahuri.
Abstract
Tuenty-four genotypes comprising of 8 parents, 4 F.s,
4 B1s, 4 B„s and 4 F s of Gossypium hirsutum L., uere
included for this study at three locations to know adapta
bility and gene effects.
The analysis of variance for stability 3houed that
G x E component uas substantial for plant height, number of
sympodia per plant, number of bolls per plant, seed cotton
yield per plant, ginning percentage, lint index, seed index,
mean fibre length and micronaire. Linear component shared
major portion of total G x E interaction for number of bolls
per plant, seed cotton yield per plant, lint index and seed
index, whereas non-linear component uas in preponderance in
characters like plant height, number of sympodia per plant,
seed cotton yield per plant, ginning percentage, lint index,
mean fibre length and micronaire.
Hybrid AHH-468 uas found to be the most desired
because it possessed ^i««^ average stability or general
stability. None of the genotypes were found stable for all characters. Heterozygous genotypes were,stable than
homozygous ones.
Gene effects were not consistent from cross to
cross and from location to location. Additivity and
dominance played equally important role with interaction
effects for inheritance of yield and yield components.
Uhen yield components were simple additivity operated
whereas epistasis operated in complex components.
Boll number and boll weight were negatively
associated as usual. Most of the characters were posits tively associated with seed cotton yield uith.feu
exceptions
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