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Genetic Studies of Earliness, Yield, and Fiber Properties in Cotton ( Gossypium hirsutum L.) 1
Author(s) -
Murray Jay C.,
Verhalen Laval M.
Publication year - 1969
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/cropsci1969.0011183x000900060024x
Subject(s) - gossypium hirsutum , biology , selection (genetic algorithm) , gossypium , malvaceae , fiber crop , fiber , yield (engineering) , heritability , horticulture , botany , microbiology and biotechnology , agronomy , genetics , materials science , composite material , artificial intelligence , computer science
Earliness, yiekl, and fiber properties in cotton were studied in a series of experiments conducted in Oklahoma from 1961 through 1966. In these studies a very early selection, OK‐86, from an early Yugoslavian strain, PI 235563, and a late commercial variety, ‘Acala 44’, were used as parents. The P 1 , P 2 , F 1 , F 2 , Bc 1 , Bc 2 , F 3 , and Bc 2 F 4 generations of this cross were investigated. Single plant analyses of the early generation materials gave inconsistent heritabilities. However, progeny row analyses of the Bc 2 F 4 gave predicted genetic advances under selection which corresponded closely with observed selection responses. Selection in this later generation material was highly effective for earliness and fiber length. It probably would have been less effective for yield, fiber coarseness, and fiber strength had selection for those three traits been practiced. The breeding of an early, high‐yielding variety with fiber properties more acceptable than those of the early varieties now available appears feasible, although difficult.