MODE OF ACTION OF GENES CONTROLLING ANTHESIS-SILKING INTERVAL (ASI) AND GRAIN YIELD AND ITS COMPONENT TRAITS IN MAIZE
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 61
Abstract
Triple test cross analysis was used to detect epistasis for eleven quantitative traits in maize. Analysis of variance for detection of epistasis revealed the presence of epistasis for all traits studied. Additive × additive (i type) digenic epistasis was highly significant for the traits such as days to tasseling, days to silking, cob width, kernel rows cob-1 and shelling per cent except ASI, cob length, kernels row-1, grain yield plot 1 and 100 grain weight. Both additive × dominance (j type) and dominance × dominance (l type) epistasis were significant for all characters. The degree of dominance was less than one for all the traits, indicating the presence of partial dominance in inheritance of all the traits. The correlation coefficient of sums and differences and F-value were found non-significant for all the traits. The magnitude of additive components was higher compared to dominance components for all traits.
Authors and Affiliations
NEELAVVA KONANAVAR
Keywords
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