Author: P.S. CHANDRAMATHI,
p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 63, Issue: jan-jan,
Nine strains belonging to G. hirsutum viz., MCU 1, MCU 4, MCU 5. MCU 6, MCU 7. MCU 8, ELS 250, P216 F and PRS 72 were crossed in all possible combinations to study the nature of gene action. The additive component (D) appeared to have a predominent rote compared to dominance (H) in plant height while the dominance components (H1) and (H2) were higher than the additive component (D) for boll production. The additive (D) and dominance (H) components appeared to be of equal importance in deciding the yield expression. However the ratio () indicated the role of over dominance and low heritability value and large number of group of factors involved also confirmed the existence of over dominance. The graphic analysis indicated over dominance for all the charecters,
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