Degree of biasedness in estimates of gene action in the presence of epistasis in Capsicum annuum

Publication Date : 29/07/2015


Author(s) :

Arpita Srivastava , A. Mohan Rao , S. Ramesh , Neelavva Konanavar , Harikrishna.


Volume/Issue :
Volume 1
,
Issue 7
(07 - 2015)



Abstract :

This experiment was conducted with an aim to know the effect of epistasis on the estimates of additive and dominance components of variation in hot pepper. Triple test cross analysis was applied to progenies produced from two hot pepper crosses (Arka Suphal × Gowribidanur and Susan Joy × PBC-483) to study the effect of epistasis on the estimates of gene action for plant height (PH), fruit length (FL), fruit width (FW), average green fruit weight (AFW), number of fruits per plant (NFP), fresh green fruit yield per plant (FY), reaction to thrips infestation (TI) and response to anthracnose infection (AI). The additive and dominance components manifested differences in the presence or absence of epistasis for traits like PH, FL, AFW, FY and AI. Additive genetic variation (D) was higher in magnitude than that of dominance genetic variation (H) for all the characters except FI where dominance component was pre-dominant.


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