不同根温处理对番茄叶片显微结构的影响

Effect of Different Root Temperature Treatments on Tomato Leaves Microstructure

继夏季高温下不同根温处理对番茄植株生长和叶片气孔的影响研究后,再深入研究不同根温处理对番茄叶片显微结构的影响。采用营养液循环栽培法,分别对根系进行(23±1),(28±1),(33±1)℃等3个不同的根温处理,采用石蜡切片法对植株叶片的显微结构进行观察与测量。结果表明,随着根温的升高,处理植株的叶片厚度、栅栏组织厚度、海绵组织厚度均在减小;表皮厚度、栅栏组织的厚度/海绵组织的厚度值增大。说明根温升高对植株构成了干旱胁迫,植株为了适应高温干旱的环境而改变了自身的结构特征。

Following the summer heat is studied under different root temperature processing of tomato plants growth and the impact on the stomata, to delve into the different root temperature treatment on the influence of tomato leaf microstructure. This experiment adopts the nutrient cycle cultivation, respectively to（23±1）,（28±1）,（33±1）℃ the roots of three different temperature treatment, leaves microstructure was observed and measured by the method of paraffin section. The results showed that, with the increase of root temperature,processing plant leaf thickness, palisade tissue thickness, sponge tissue thickness decreased; epidermis thickness, the thickness of palisade tissue/spongy tissue increased. The root of high temperature on plants constitute the drought stress, plants changed the structure characteristic of itself to meet the environment of high temperature and drought.