Genetic parameters and selection of intra and interspecific peanut lines grown under rainfed conditions

Authors

  • Rafael Wylles da Silva Araújo
  • Roseane Cavalcanti dos Santos
  • Rennan Fernandes Pereira
  • Jailma Souza Thomaz
  • Jean Pierre Cordeiro Ramos
  • José Jaime Vasconcelos Cavalcanti

Abstract

The introgression of wild germplasm represents a valuable strategy for enhancing the variability of commercial crops. In this study, the genetic parameters and selection response of amphidiploid lines derived from three Arachis species were estimated. Field assays were conducted under rainfed conditions, using the early-maturing BR 1 cultivar as control. Agronomic traits were evaluated to estimate genetic and phenotypic parameters, as well as to calculate the selection index. Based on the yield data, the lines RC 53 P4, RC 51 P4 and RC 78 P1 showed a superior performance, with 5 % of gains in pod and seed yield, and a harvest index of 37 %, exceeding the control by 10 %. The genotypic determination coefficients for number of pods per plant, pod and seed yield, and harvest index were above 60 %, indicating sufficient genetic variability for breeding. Substantial genetic gains were also observed for the selection index, ranging from 0.71 % (harvest index) to 4.22 % (seed yield).

KEYWORDS: Arachis hypogaea L., gene introgression, drought tolerance.

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Published

2025-10-14

How to Cite

ARAÚJO, Rafael Wylles da Silva; SANTOS, Roseane Cavalcanti dos; PEREIRA, Rennan Fernandes; THOMAZ, Jailma Souza; RAMOS, Jean Pierre Cordeiro; CAVALCANTI, José Jaime Vasconcelos. Genetic parameters and selection of intra and interspecific peanut lines grown under rainfed conditions. Pesquisa Agropecuária Tropical [Agricultural Research in the Tropics], Goiânia, p. e83574, 2025. Disponível em: https://revistas.ufg.br/pat/article/view/83574. Acesso em: 5 dec. 2025.

Issue

v. 55 (2025)

Section

Research Article

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