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A Search for High Net Photosynthetic Rate among Soybean Genotypes 1
Author(s) -
Cannell R. Q.,
Brun W. A.,
Moss D. N.
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/cropsci1969.0011183x000900060056x
Subject(s) - glycine , photosynthesis , biology , genotype , carbon dioxide , compensation point , horticulture , zea mays , botany , zoology , agronomy , genetics , gene , ecology , transpiration , amino acid
Two thousand four hundred and fifty‐eight genotypes of soybean ( Glycine max (L.) Merr.) were screened for survival at a low carbon dioxide concentration near the CO 2 compensation point of Zea mays L. Survival in such an atmosphere requires a low CO 2 compensation point and indicates a high maximum net photosynthetic rate. None survived. The CO 2 compensation points of 44 soybean genotypes, chosen from among those which died first and last in the screening procedure, were not significantly different from each other with the exception of one which was slightly higher. The CO 2 compensation points of 6 other Glycine species were similar to that of Glycine max (L.) Merr.