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Flat‐Square in Cotton, Acala Type. I. Its Mode of Inheritance and Heritability 1
Author(s) -
Khalifa H.,
Starmer W. T.,
Fisher W. D.,
Stith L. S.
Publication year - 1974
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1974.0011183x001400040007x
Subject(s) - heritability , biology , inheritance (genetic algorithm) , gossypium hirsutum , gossypium , square (algebra) , epistasis , genetics , botany , mathematics , gene , geometry
Flat‐square, an unidentified flower disorder in cotton ( Gossypium hirsutum L.) which is manifested at bloom time, appeared on a large scale in Arizona during 1962. Part of this study was designed to verify the mode of inheritance and heritability of this disorder. Three homozygous inbred lines of Acala‐type cotton known to exhibit flat‐square were intercrossed with a doubled haploid line free from flat‐square. Seeds of the F 1 , F 2 , BC Df , and BC f generations were grown simultaneously with the parental populations to evaluate its mode of inheritance and heritability. Flat‐square was found to be quantitatively inherited, with low heritability. The estimates of the genetic parameters indicate that the inhertance is mostly additive in nature with no evidence of epistasis or maternal effect.