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<p>In the present investigation five crosses out of twenty crosses made in line × 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<sub>3</sub> generation.</p>

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Inheritance of Stem Rot Resistance in Groundnut (Arachis hypogaea L)

  • 期刊论文

  • 发表日期：

    2026年6月16日

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  • C. Suvarna,
  • R. P. Vasanthi,
  • K. Viswanath,
  • C. Kiran Kumar Reddy,
  • Y. Amaravathi,
  • M. Reddi Sekhar

摘要

In the present investigation five crosses out of twenty crosses made in line × 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 F3 generation.