生态学杂志2013，Vol.32Issue(4)：882-889,8.
大田条件下增强UV-B辐射对元阳梯田2个地方水稻品种叶片形态解剖结构的影响
Effects of enhanced UV-B radiation on the leaf morphology and anatomical structure of two local rice varieties in Yuanyang terraced fields, Yunnan Province of Southwest China
摘要
Abstract
An in situ field experiment was conducted in Yuanyang terraced fields to study the effects of simulated enhanced UV-B radiation at different intensity levels (0, 2. 5 , 5. 0, and 7. 5 kJ · m-2 ) on the leaf morphology and anatomical structure of two local rice cultivars, Yuelianggu and Baijiaolaojing, at tillering, jointing, and booting stages. For the two test rice cultivars, enhanced UV-B radiation induced a gradual decrease of leaf length, leaf width, and single leaf area, a significant increase of leaf thickness and upper and lower epidermal cuticle thickness, an increase of upper epidermal thickness, and a significant decrease of lower epidermis thickness. Enhanced UV-B radiation also induced a loose array of mesophyll cell and an increase of intercellular space. Under 5. 0 and 7. 5 kJ · m-2 of UV-B radiation, the thickness of lower epidermal cuticle of Baijiaolaojing was significantly bigger than that of Yuelianggu, but no significant difference was observed under other UV-B radiation intensity levels. The leaf length and the thickness of upper epidermal and lower epidermal cuticle of the two test cultivars under 5. 0 and 7. 5 kJ · m-2 of UV-B radiation, and the leaf area and the thickness of upper epidermal cuticle of Baijiaolaojing under 7. 5 kJ · m-1 of UV-B radiation were significantly larger than those under 2.5 kJ · m-2 of UV-B radiation, but no significant differences were observed between other treat- ments. These results indicated that enhanced UV-B radiation had significant effects on the leaf morphology and anatomical structure of local rice cultivars in Yuanyang terraced fields.关键词
UV-B辐射/元阳梯田/地方水稻品种/叶片形态/解剖结构Key words
UV-B radiation/ Yuanyang terraced field/ local rice variety/ leaf morphology/ anatomical structure分类
农业科技引用本文复制引用
包龙丽,何永美,祖艳群,李元,高国兴,何玉忠..大田条件下增强UV-B辐射对元阳梯田2个地方水稻品种叶片形态解剖结构的影响[J].生态学杂志,2013,32(4):882-889,8.基金项目
国家自然科学基金项目(31060083、41205113)资助. （31060083、41205113）
