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Difference in single leaf photosynthesis between old and new rice cultivars. I. Single-leaf photosynthesis and its dependence on stomatal conductance



Difference in single leaf photosynthesis between old and new rice cultivars. I. Single-leaf photosynthesis and its dependence on stomatal conductance



Japanese Journal of Crop Science 59(2): 283-292



In field trials in 1981-83 with old (before 1945) and new (after 1950) rice cultivars, single-leaf photosynthesis (CER) and stomatal conductance (gs) were compared. At the heading stage, little or no difference in CER was observed between the old and new cultivar groups. However, at the ripening stage, CER was clearly higher in new cultivars. The new:old ratio in CER was 124.4% averaged over 3 years; gs was higher in the new cultivar groups than in the old ones at the ripening stage.

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Accession: 002072221

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