Formerly International Journal of Basic and Applied Agricultural Research

Unrevealing the role of epistasis through Triple Test Cross in Indian mustard

NARENDER SINGH, USHA PANT, NEHA DAHIYA, SHARAD PANDEY, A. K. PANDEY and SAMEER CHATURVEDI
Pantnagar Journal of Research, Volume - 19, Issue - 3 ( September-December, 2021)

Published: 2021-12-31

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Abstract


Rapeseed-mustard is premium oilseed crop as far as edible oil availability is considered. Even after intensive improvement programme, still there is need to fill the gap between demand and supply. Estimates of epistasis though plays highly significant role, still always overlooked in almost all the statistical analysis. In present investigation, the epistasis is calculated using triple test cross analysis. The additive × additive [i] type epistasis was found to be significant for days to maturity and plant height. The estimates of non-additive [j+l] epistasis emerged highly significant for all the characters except days to 50% flowering, length of main raceme, siliquae on main raceme, primary branches per plant, number of seeds per siliqua and test weight. Total epistasis showed highly significant estimates for days to maturity, plant height, secondary branches per plant, siliqua length, siliqua density, oil content and seed yield per plant. The [i] type epistasis × blocks exhibited significant estimates only for siliqua length. None of characters showed significant estimates of [j+l] type epistasis x blocks and total epistasis x blocks. The present investigation reflected significant role of epistatic components which should be taken into consideration while suggesting breeding methodology to attain maximum outcome.


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