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Genetics of Ginning Efficiency and Its Genotypic and Phenotypic Correlations with Agronomic and Fiber Traits in Upland Cotton
Author(s) -
Bechere Efrem,
Boykin J.C.,
Zeng L.
Publication year - 2014
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/cropsci2013.05.0337
Subject(s) - biology , heritability , gossypium hirsutum , agronomy , genotype , microbiology and biotechnology , genetics , gene
Information regarding genetic variability and correlations of desirable traits provide a reliable basis for cotton ( Gossypium hirsutum L.) improvement. The objective of this research was to study the genetics of ginning efficiency and estimate genotypic correlations of ginning energy requirements and ginning rate with some agronomic and quality traits in two upland cotton crosses. F 2 plants from two segregating families were used to produce F 3 plants, from which 62 individual plants from each of the two populations were randomly harvested in 2009 to produce progeny rows which were planted in two replications at two environments at Stoneville, MS during 2010 and 2012. The highest broad‐sense heritability was observed for fuzz percentage followed by net ginning energy, gross ginning energy, and ginning rate. Significant positive genotypic correlations were observed between fuzz percentage, net ginning energy, and gross ginning energy. Fuzz percentage, however, had a significant negative genotypic correlation with ginning rate. Ginning rate was negatively and significantly correlated with net ginning energy and gross ginning energy. Net ginning energy had a significant positive genotypic relationship with gross ginning energy. These results hold true for both populations. Results also indicated a high genetic advance from selection for fuzz percentage. These results, coupled with the fact that fuzz percentage is easier, faster, and much less expensive to measure, make it a good candidate for selecting for ginning efficiency.