Indian Journal of Agricultural Research

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Indian Journal of Agricultural Research, volume 43 issue 4 (december 2009) : 279 - 283

GENETICS OF SLOW- RUSTING RESISTANCE TO LEAF RUST IN BREAD WHEAT

V.J. Bhatiya, M.A. Vaddoria, D.R. Mehta, B.A. Monpara
1Department of Agricultural Botany, College of Agriculture Junagadh Agricultural University, Junagadh- 362 001, India

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Cite article:- Bhatiya V.J., Vaddoria M.A., Mehta D.R., Monpara B.A. (2024). GENETICS OF SLOW- RUSTING RESISTANCE TO LEAF RUST IN BREAD WHEAT. Indian Journal of Agricultural Research. 43(4): 279 - 283. doi: .

ABSTRACT

Genetic architecture of slow-rusting resistance to leaf rust was studied using
generation mean analysis involving six basic generations (P1,P2, F1, F2, BC1 and
BC2) of two bread wheat crosses viz., J 24 x HD 2189 and J 24 x HS 347. The
individual and joint scaling tests revealed the presence of digenic epistasis for
inheritance of slow-leaf rusting in both the crosses. The best fitting model revealed
the significance of only additive (d) gene effect in cross J 24 x HD 2189 where
simple selection could be effective for exploiting slow rusting phenomenon. In case
of cross J 24 x HS 347, all the gene effects except (m) were significant indicating
importance of additive and non-additive gene effects. Therefore, improvement
through reciprocal recurrent selection, biparental mating or diallel selective mating
could be employed for improvement of this trait. However, number of gene pairs
controlling slow-leaf rusting was quite variable in both the crosses.

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