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Sub Okra Leaf Influence on Cotton Yield 1
Author(s) -
Meredith William R.,
Wells Randy
Publication year - 1987
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/cropsci1987.0011183x002700010012x
Subject(s) - biology , fiber crop , cultivar , malvaceae , gossypium hirsutum , backcrossing , yield (engineering) , agronomy , gossypium , horticulture , trait , biochemistry , materials science , metallurgy , gene , computer science , programming language
A study in three diverse environments in 1985 near Stoneville, MS compared the yield of eight BC 4 F 3 ‐derived sub okra leaf ( L u 2 ) and normal leaf ( I 2 ) cotton plants ( Gossypium hirsutum L.). Sub okra leaf cotton averaged significantly higher yields (3%) than normal leaf cotton. Also, a significant ( P = 0.03) leaf type ✕ cultivar background interaction was detected. For the cultivar backgrounds of ‘Stoneville 825’, ‘Deltapine 26’, ‘Deltapine 5540’, DES 2–10, and ‘Tamcot CAMD‐E’, the average yield of sub okra and normal‐derived populations was 968 and 971 kg/ha, respectively. For the backgrounds of ‘DES 422’, ‘SC‐’, and MD 65‐11 the average yield was 972 and 894 kg/ha, respectively. No major differences between sub okra and normal leaf populations for earliness, yield components, or fiber properties were detected. The results from these backcross‐derived populations indicate that previous evaluation studies using F 3 hybrid populations that were genetically similar except for one simple inherited trait, leaf type, were an acceptable method for measuring approximate yield potential of the new trait. This study indicates that for some genetic backgrounds and environments that the use of sub okra to replace normal leaf offers a potential yield increase of 3 to 5%.