Indian Society of Genetics & Plant Breeding

Genetics of white rust resistance in [Brassica juncea (L.) Czern. & Coss.] and allelic relationship between interspecific sources of resistance

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The breakdown of resistance is the prime concern to
search for new genes to develop a durable resistance
against white rust in mustard. The present study was
undertaken to know the mode of inheritance using
indigenously developed resistance source and allelic
relationship of genes for white rust resistance in two
different sources viz. Bio-YSR and NPC-12 from Brassica
juncea and B. carinata, respectively. The inheritance
pattern of resistance genes in donors when crossed with
two widely cultivated, highly susceptible cultivars, Varuna
and Bio-902 (Pusa Jai Kisan), indicated the presence of a
single dominant gene for white rust resistance. Cross
between the resistant sources from B. juncea and B.
carinata segregated in 15:1 (resistant: susceptible) ratio
in F2 generation, indicating the involvement of two different
genes governing white rust resistance in these sources.

Keywords: Indian mustard, white rust, inheritance, resistance, allelic relationship


Year: 2009
Volume: 69
Issue: 3
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906


T. Mohapatra info_circle
M. S. Yadav info_circle

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