摘要
对AP番荔枝的光合特性进行了研究。结果表明:在晴天,AP番荔枝叶片净光合速率的日变化呈双峰曲线,高峰在11时,次高峰在15时,中午有明显的“午休”现象;光饱和点为1350μmol/(m2·s),光补偿点为56.4μmol/(m2·s);光合作用的最适温度在24.3oC左右。AP番荔枝的光合作用受光合有效幅射、温度和叶片气孔导度等因素的影响;蒸腾速率随叶温的高低而变化。
The photosynthetic characteristics of A nnona atemoya Hort cv. African Pride were studied. The results showed that in fine days the curve of diurnal photosynthesis variation of African Pride had two peaks, appearing at 11：00 and 15：00, respectively, and had obvious midday depression photosynthesis. The light compensation point of photosynthesis and light saturation point of photosynthesis pistachio leaves were 56.4 and 1 350 μmol/（m^2·s） respectively. The optimum temperature for photosynthesis was 24.3 ℃. Environmental factors such as photosynthetically active radiation and stomatal conductance exerted significant effects on photosynthesis. The transpiration rate of the leaves varied with different temperature of leaves.
出处
《热带作物学报》
CSCD
2005年第4期34-37,共4页
Chinese Journal of Tropical Crops
关键词
AP番荔枝
光合特性
蒸腾速率
光合适温
A nnona atemoya Hort cv.African-Pride photosynthesis transpiration rate optimum temperature of photosynthesis
