细极链格孢菌蛋白激发子对棉株光合特性的影响

Effect of protein elicitor from Alternaria tenuissima on characteristics of photosynthesis of cotton

以湘杂棉3号F1为对象,用Li-6400光合作用测定仪测定了细极链格孢菌蛋白激发子(PEAT)诱导下的光合速率、气孔导度、蒸腾速率、外界光合作用有效辐射等指标.结果表明,PEAT诱导可以提高棉花生长功能叶的叶绿素含量、净光合速率、气孔导度、蒸腾速率、外界光合作用有效辐射等,延缓叶片的衰老和光合功能衰退,延长了叶片的光合功能期,使光合速率维持在一个较高的水平.

Using Xiang hybrid F1 as experimental material, the response of hotosynthesis speed, blowhole leading, transpiration speed of cotton photo synthetically active radiation to changes caused by protein elicitor from Alternaria tenuissima was studied using a Li-6400 in China. Analyzing of the major photosynthesis indexes, indicated PEAT could enhance the chlorophyll content, photosynthesis speed, blowhole leading, and transpiration speed, photo synthetically active radiation stage. Thus, the aging of leaves and the decline of photosynthetic capability were delayed, and the photosynthetic efficiency could be maintained at a higher level.