云南陆稻叶片气孔特征与产量的关系

THE RELATIONSHIP BETWEEN LEAF STOMA AND YIELD OF UPLAND RICE IN YUNNAN

对来源于不同海拔梯度的陆稻品种的叶片进行电镜扫描,发现云南陆稻叶片上的气孔数量和气孔面积占叶面积的比率与海拔梯度密切相关,高海拔品种的气孔多于和大于低海拔品种;气孔密度与各品种的产量密切相关。不同海拔的品种间气孔的差异,是生态生理的适应性,在系统发育中反应了遗传机制的结果。

The relationship between leaf stoma and yield of upland rice cultivars collected from different altitudes was studied with electron microscope scanning techniques.The results showed that, the number of stoma and the percentage that stoma area accounted for on leaf surface were closely related to the natural altitude. The number and size of upland rice cultivars from higher altitude were larger than that of cultivars from lower altitude. The density of stoma was closely related with the yield of cultivars of upland rice. It was suggested that the differences of stoma among the cultivars from different altitudes were ecological and physiological adaptability, and resulted from the genetic mechanism responding in the historical development.