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Association of Fiber Quality Parameters and Within‐Boll Yield Components in Upland Cotton
Author(s) -
Smith C. Wayne,
Coyle Gwen G.
Publication year - 1997
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/cropsci1997.0011183x003700060019x
Subject(s) - lint , yield (engineering) , fiber , biology , linkage (software) , gossypium , fiber crop , agronomy , malvaceae , genetics , materials science , composite material , gene
Lint yield and fiber quality in upland cotton, Gossypium hirsutum L., are interrelated through a series of individual components such as fiber length and the number of fibers produced on each seed. Numerous studies have reported the relationships among various components of yield and yield per unit land area, but none have reported on the relationships among the most basic within‐boll yield components and fiber quality parameters. The objectives of this study were (i) to determine the association of fiber quality parameters with basic within‐boll yield components for six diverse cotton genotypes and (ii) to determine if repulsion phase linkage explained the high negative correlations reported among fiber quality parameters and lint yield. The second objective was investigated by comparing the associations of fiber length, strength, and micronaire with within‐boll yield components among selected F 1 populations developed by mating parents with similar direction of general combining ability (GCA) for fiber quality and within‐boll lint yield components with selected F 1 populations derived by mating parents with dissimilar direction of GCA. Parents and F 1 s were grown at College Station, TX, in 1989 and 1992. Fiber quality parameters were determined by high volume instrumentation. Within‐boll lint yield components were determined by direct measurement or through calculations. Fiber strength and length were negatively associated with the most basic within‐boll lint yield components. Repulsion phase linkage appears to play a role in the negative association of fiber quality and within‐boll lint yield but pleiotropic effects could not be ruled out.