Inheritance of late leafspot resistance in groundnut mutants

Motagi, B.N. and Gowda, M.V.C. and Naidu, G.K. (2000) Inheritance of late leafspot resistance in groundnut mutants. Indian Journal of Genetics and Plant Breeding, 60 (3). pp. 347-352.

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The mutant VL 1-45, resistant to late leafspot (Phaeoisariopsis personata [Mycosphaerella berkeleyi]), and its susceptible parent (VL 1) and grandparent (DER) were crossed in three combinations viz., VL 1-45 × VL 1, VL 1-45 × DER and VL 1 × DER. All the hybrids (F1's) showed intermediate values for disease resistance, which skewed towards the susceptible parents indicating the partial dominance of the gene(s) causing susceptibility. Segregation in the F2 revealed the presence of a suppressor element (inhibitory) in the original DER parent which was subsequently eliminated by a mutational event and that duplicate complementary recessive genes controlled the late leafspot resistance in the crosses studied. The genotypic constitutions of the parents based on the genetic hypotheses were formulated

Item Type: Article
Author Affiliation: Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad 580 005, India
Subjects: Plant Protection > Pesticides
Plant Protection > Pests
Crop Improvement > Plant Breeding
Divisions: Groundnut
Depositing User: Mr B Krishnamurthy
Date Deposited: 12 May 2011 08:29
Last Modified: 12 May 2011 08:29

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