Loading…

Selection of cotton genotypes for yield and fiber quality under water stress

ABSTRACT The objective of this work was to select a cotton line tolerant to water stress, based on yield and fiber quality characteristics. A total of nine cotton genotypes were evaluated (six breeding lines and three commercial cultivars) in two field experiments conducted in Quixeramobim - CE with...

Full description

Saved in:
Bibliographic Details
Published in:Revista brasileira de engenharia agrícola e ambiental 2022-08, Vol.26 (8), p.610-617
Main Authors: Gomes, Itallo H. R. A., Cavalcanti, José J. V., Farias, Francisco J. C., Paixão, Francisco J. R. da, Silva Filho, João L. da, Suassuna, Nelson D.
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:ABSTRACT The objective of this work was to select a cotton line tolerant to water stress, based on yield and fiber quality characteristics. A total of nine cotton genotypes were evaluated (six breeding lines and three commercial cultivars) in two field experiments conducted in Quixeramobim - CE without water supplementation in 2018 and 2019, respectively. Traits related to cotton lint yield and intrinsic fiber quality were measured. Data were submitted to individual and joint analysis of variance, and selection by the selection index. The genetic variability among the materials demonstrates the possibility of significant gains in the cotton selection process. The genotypes CNPA 2013 - 2235 RF FL, CNPA 2013 - 2064 RF FL and CNPA 2012 - 160 RF FL, as well as the cultivar FM 944 GL, had higher production and better fiber quality under rainfed conditions. RESUMO O objetivo deste estudo foi selecionar linhagens de algodoeiro tolerantes ao estresse hídrico, com base em caracteres de produtividade e qualidade de fibra. O experimento foi conduzido em dois experimentos de campo em Quixeramobim - CE sem suplementação hídrica, nos anos: 2018 e 2019. Foram avaliados nove genótipos de algodoeiro, sendo seis linhagens e três cultivares comerciais. Foram mensuradas variáveis relacionadas com produtividade de algodão em pluma e qualidade intrínseca de fibra. Os dados foram submetidos à análise de variância individual e conjunta, e a seleção pelo índice de seleção. A variabilidade genética encontrada entre os materiais demonstra a possibilidade de ganhos significativos no processo de seleção do algodoeiro. Os genótipos CNPA 2013 - 2235 RF FL, CNPA 2013 - 2064 RF FL e CNPA 2012 - 160 RF FL e a cultivar FM 944 GL tiveram maior produção e melhor qualidade de fibra em condições de sequeiro.
ISSN:1415-4366
1807-1929
1807-1929
DOI:10.1590/1807-1929/agriambi.v26n8p610-617