Genetic control of peduncle length in cowpea

Authors

  • Maurisrael de Moura Rocha Embrapa Meio-Norte
  • Kênnya Jhouanny Martins de Carvalho Universidade Federal do Piauí
  • Francisco Rodrigues Freire Filho Embrapa Meio-Norte
  • Ângela Celis de Almeida Lopes Universidade Federal do Piauí
  • Regina Lucia Ferreira Gomes Universidade Federal do Piauí
  • Iradenia da Silva Sousa Universidade Federal do Piauí

DOI:

https://doi.org/10.1590/S1678-3921.pab2009.v44.1472

Keywords:

Vigna unguiculata, plant architecture, mechanical harvesting, genetic inheritance, genetic parameters

Abstract

The objective of this work was to investigate the genetic control of peduncle length in cowpea (Vigna unguiculata L.). A short peduncle cowpea line (TVx-5058-09C) was crossed with a long peduncle line (TR 96-282-22G). The parents and the F1, F2, RC1 (P1xF1), and RC2 (P2xF1) generations were evaluated in randomized block design with four replications. Genotypic, phenotypic, environmental, additive, and dominance variances for peduncle length were determined. Narrow and broad sense heritability, the degree of dominance, and the minimum number of genes determining peduncle length were estimated. The additive-dominant model was adequate to explain the observed variation. The additive gene effect was the most important in controlling peduncle length, which appeared to be controlled by five genes.

Author Biographies

Maurisrael de Moura Rocha, Embrapa Meio-Norte

Pesquisador

Kênnya Jhouanny Martins de Carvalho, Universidade Federal do Piauí

Aluna do Departamento de Biologia

Francisco Rodrigues Freire Filho, Embrapa Meio-Norte

Pesquisador

Ângela Celis de Almeida Lopes, Universidade Federal do Piauí

Professora do Departamento de Biologia

Regina Lucia Ferreira Gomes, Universidade Federal do Piauí

Professora do Departamento de Fitotecnia

Iradenia da Silva Sousa, Universidade Federal do Piauí

Aluna do Departamento de Biologia

Published

2010-11-09

How to Cite

Rocha, M. de M., Carvalho, K. J. M. de, Filho, F. R. F., Lopes, Ângela C. de A., Gomes, R. L. F., & Sousa, I. da S. (2010). Genetic control of peduncle length in cowpea. Pesquisa Agropecuaria Brasileira, 44(3), 270–275. https://doi.org/10.1590/S1678-3921.pab2009.v44.1472

Issue

Section

GENETICS