Genotype x environment interaction and stability in landraces of cowpea under dryland conditions

ABSTRACT Cowpea (Vigna unguiculata (L.) Walp.) is an excellent crop for research in semi-arid regions, due to its tolerance to high temperatures and water deficit, with satisfactory yields in rain-fed cultivation. The objective this work was to evaluate the genotype x environment (G × E) interaction...

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Published in:Caatinga 2023-06, Vol.36 (2), p.339-348
Main Authors: Rolim, Rubens R., do Nascimento, Naysa F. F., Nascimento, Mayana F., de Araujo, Helder F. P.
Format: Article
Language:English
Subjects:
AGRICULTURE, DAIRY & ANIMAL SCIENCE
AGRONOMY
FISHERIES
FOOD SCIENCE & TECHNOLOGY
FORESTRY
VETERINARY SCIENCES
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Summary:ABSTRACT Cowpea (Vigna unguiculata (L.) Walp.) is an excellent crop for research in semi-arid regions, due to its tolerance to high temperatures and water deficit, with satisfactory yields in rain-fed cultivation. The objective this work was to evaluate the genotype x environment (G × E) interaction, adaptability and stability of cowpea landraces used in the Cariri, Paraíba, in the semiarid region of Northeast Brazil. The experiment was carried out under rain-fed conditions in two locations of this region. For all traits evaluated, the G × E interaction was simple, which means that the evaluated landraces can be recommended for the different environments tested. The results also suggest that phenotypic selection can be efficient to enhance the yield of cowpea landraces and, therefore, can be practiced by the farmers themselves. The most advantageous landraces were ranked with good stability (qi
ISSN:0100-316X
1983-2125
1983-2125
DOI:10.1590/1983-21252023v36n211rc