Inheritance of stem rot resistance in groundnut (Arachis hypogaea L)

  1. Suvarna Chintha
  2. Vasanthi R.P
  3. Viswanath K
  4. Kiran kumar Reddy C
  5. Amaravathi Y
  6. Reddi Sekhar M
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Abstract

In the present investigation five crosses out of twenty crosses made in line x tester mating design were utilized for inheritance studies of stem rot resistance. The five crosses were derived from crossing of five susceptible genotypes (TCGS 1694, TCGS 2245, Dheeraj, Kadiri-6 and Narayani) with one stem rot resistant genotype, TCGS 1862 (male parent). F₁s were moderately resistant to stem rot. The segregation pattern in the F₂ generation was good fit to a phenotypic ratio of 1 Susceptible : 2 Moderately resistant : 1 Resistant indicating that resistance to stem rot is governed by incomplete dominance. These F₂ findings were further confirmed by genetic analysis in the F 3 generation.

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  1. Version published to 10.21203/rs.3.rs-9219017/v1 on Research Square