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Selection for High CO 2 Exchange Rate among Inbred Lines of Maize 1
Author(s) -
Crosbie T. M.,
Pearce R. B.,
Mock J. J.
Publication year - 1981
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/cropsci1981.0011183x002100040038x
Subject(s) - inbred strain , selection (genetic algorithm) , biology , zea mays , grain yield , yield (engineering) , agronomy , poaceae , trait , genetics , materials science , gene , artificial intelligence , computer science , metallurgy , programming language
Photosynthesis is a primary trait to be improved in a selection program designed to improve yield potential of maize ( Zea mays L.). Previous studies have suggested that selection for high CO 2 exchange rate (CER) among inbred parents would be effective. We conducted experiments to evaluate the effectiveness of selection for high CER among inbred lines of maize. Actual advance for one cycle of selection among inbred lines was 2.5 (4.7%) and 2.3 (5.7%) mg CO 2 dm −2 hour −1 during vegetative growth and during mid‐grain filling, respectively. Realized heritabilities for CER were 0.33 and 0.26 for vegetative and grain‐filling growth stages.