Differences between rice and wheat in temperature responses of photosynthesis and plant growth.
Differences between rice and wheat in temperature responses of photosynthesis and plant growth.
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DOI：
10.1093/pcp/pcp029
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发表时间：
2009-04
影响因子：
4.9
通讯作者：
Makino A
中科院分区：
文献类型：
--
作者：
Nagai T;Makino A
在13/10、19/16、25/19、30/24和37/31°C的昼夜温度条件下，研究了水培水稻和小麦的光合作用（A）和生长的温度响应。无论生长温度如何，水稻和小麦的最大A速率分别在30-35°C和25-30°C。在25°C以下，小麦中的比率较高，而在30°C以上，水稻中的比率较高。然而，在这两个物种中，在生长温度下测量的A几乎保持恒定，与温度无关。在30/24°C下生长的水稻和在25/19°C下生长的小麦的生物量生产和相对生长速率（RGR）最大。虽然不同品种间叶面积比（LARs）的最适温度没有差异，但水稻的净同化率（NAR）在低温（19/16°C）下下降，而小麦的NAR在高温（37/31°C）下下降。对于这两个物种，N-利用效率（NUE）的增长率（GR），估计除以NAR叶氮含量，与GR和生物量生产。同样，当在生长温度下估计A的NUE时，两个物种中A的NUE的温度响应与GR的NUE的温度响应相似。结果表明，水稻和小麦生物量生产对温度响应的差异取决于A.
The temperature responses of photosynthesis (A) and growth were examined in rice and wheat grown hydroponically under day/night temperature regimes of 13/10, 19/16, 25/19, 30/24 and 37/31°C. Irrespective of growth temperature, the maximal rates of A were found to be at 30–35°C in rice and at 25–30°C in wheat. Below 25°C the rates were higher in wheat, while above 30°C they were higher in rice. However, in both species, A measured at the growth temperature remained almost constant irrespective of temperature. Biomass production and relative growth rate (RGR) were greatest in rice grown at 30/24°C and in wheat grown at 25/19°C. Although there was no difference between the species in the optimal temperature of the leaf area ratios (LARs), the net assimilation rate (NAR) in rice decreased at low temperature (19/16°C) while the NAR in wheat decreased at high temperature (37/31°C). For both species, the N-use efficiency (NUE) for growth rate (GR), estimated by dividing the NAR by leaf-N content, correlated with GR and with biomass production. Similarly, when NUE for A at growth temperature was estimated, the temperature response of NUE for A was similar to that of NUE for GR in both species. The results suggest that the difference between rice and wheat in the temperature response of biomass production depends on the difference in temperature dependence of NUE for A.
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影响因子：
2
作者：
COCK J H;YOSHIDA S
通讯作者：
YOSHIDA S
影响因子：
7.4
作者：
MAKINO, A;NAKANO, H;MAE, T
通讯作者：
MAE, T
影响因子：
6.9
作者：
Hikosaka, K;Ishikawa, K;Onoda, Y
通讯作者：
Onoda, Y
影响因子：
7.3
作者：
Loveys, BR;Scheurwater, I;Atkin, OK
通讯作者：
Atkin, OK
影响因子：
7.4
作者：
GUY, CL;HUBER, JLA;HUBER, SC
通讯作者：
HUBER, SC