Genetics of alternaria leaf blight resistance in Indian mustard [Brassica Juncea (L.) Czern & Coss.]

Genetics of alternaria leaf blight resistance in Indian mustard [Brassica Juncea (L.) Czern & Coss.]

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Inheritance of Alternaria leaf blight disease in Indian mustard (Brassica juncea L.Czern & Coss) was carried-out Music using generation mean analysis.Results based on generation mean analysis of per cent disease index (PDI) showed significant estimates of additive [d] and dominance [h] effects as well as all the three types of epistasis in all the three crosses.

The opposite signs of [h] and [l] indicated that headstall duplicate epistasis was operative in the inheritance of Alternaria leaf blight in the material studied.