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Relation in Grasses of High Photosynthetic Capacity and Tolerance to Atrazine 1
Author(s) -
Moss Dale N.
Publication year - 1968
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/cropsci1968.0011183x000800060043x
Subject(s) - atrazine , biology , photosynthesis , setaria viridis , saccharum officinarum , digitaria sanguinalis , poaceae , sorghum , setaria , agronomy , photosynthetic capacity , saccharum , photosynthetic efficiency , zea mays , botany , weed , pesticide
Zea mays L., Saccharum officinarum L., the sorghums , and several other grass species have maximum rates of photosynthesis near 60 mg CO 2 dm ‐2 hr ‐1 and are tolerant of the herbicide, 2‐chloro‐4‐ethylamino‐6‐isopropylaminos‐s‐triazine (atrazine). In contrast, the small grains and numerous other grasses have maximum rates of photosynthesis of about 20 mg CO 2 dm ‐2 hr ‐1 and are susceptible to atrazine. The correlation between these traits suggested that atrazine tolerance might be a useful selection criterion to detect efficient photosynthesis. Using this hypothesis, Digitaria and Setaria species which are tolerant of atrazine, were found to have efficient photosynthesis.