Genetic architecture of resistance to yellow vein mosaic and leaf spot diseases in okra (Abelmoschus esculentus (L.) Moench)
Keywords: Abelmoschus esculentus, gene action, epistasis, dominance, additive, yellow vein mosaic, leaf spot
AbstractGeneration mean analysis of four crosses of okra (Abelmoschus esculentus (L.) Moench) viz., NBPGR/TCR-1498 x NBPGR/TCR-2060, NBPGR/TCR-2019 x Parbhani Kranti, MDU-1 x Varsha Uphar, NBPGR/TCR-985 x Parbhani Kranti was conducted for studying gene action of resistance to two major diseases viz., yellow vein mosaic (YVM) and Alternaria leaf spot under Kerala conditions. Duplicate gene action was observed for resistance to both diseases, which indicated hindrance to improvement by simple selection. Hence reciprocal recurrent selection would be useful for the effective utilisation of both types of additive and non-additive gene effects simultaneously.
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