Inheritance of gene conferring resistance to wilt (Fusarium oxysporum f sp. lini) disease of linseed (Linum usitatissimum L.) in North West Himalayas

  • Kumar Nimit Department of Crop Improvement, CSKHPKV, Palampur
Keywords: linseed, wilt, inheritance, resistance

Abstract

The genetics of resistance against wilt disease caused by Fusarium oxysporum f sp. lini in linseed was studied in F1, F2, BC1 and BC2 generations of two susceptible varieties T-397 and Chambal, crossed with two resistant varieties HimAlsi-1 and Nagarkot. On the basis of the segregating ratio obtained in F2 and backcross generations of the two crosses, Nagarkot x Chambal and Nagarkot x T-397, the disease resistance was controlled by two recessive alleles with duplicate gene action in the variety Nagarkot. On contrary in the crosses HimAlsi-1 x T-397 and HimAlsi x Chambal-1, two dominant genes with complimentary gene action confirming wilt resistance in HimAlsi-1. These resistant genotypes may be used as donor for transferring resistance in good cultivars otherwise susceptible to wilt using suitable breeding programme.

Author Biography

Kumar Nimit, Department of Crop Improvement, CSKHPKV, Palampur
Ph.D Scholar
Published
19-02-2016
Section
Research Note