NET ASSIMILATION RATES OF WHEAT PLANTS GROWN IN TWO FIELDS WITH DIFFERENT TEMPERATURE CONDITIONS DURING WINTER
1973 Volume 23 Issue 6 Pages 243-250
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1973 Volume 23 Issue 6 Pages 243-250
Net assimilation rate and other growth attributes were compared between autumn wheats grown at two fields with different temperature conditions during winter. Net assimilation rates varied much with temperature during winter. The rate was 0.4g d.w./dm^2/week in Tokyo (Hoya) (monthly mean temperature from Dec. 10 to Mar. 9,4.7℃) and 0.90 at Niijima island (Dec. 22 to Mar. 17,8.9℃). It was suggested that this dependence of net assimilation rate on temperature during winter was roughly due to the depression of physiological photosynthetic activity in the leaves under low temperature conditions.
