河南农业科学2016，Vol.45Issue(1)：42-45,4.DOI:10.15933/j.cnki.1004-3268.2016.01.008
田间条件下UV-B辐射增强对大豆生长及光合特性的影响
Effects of Enhanced UV-B Radiation on the Growth and Photosynthesis Characteristics of Soybean( Glycine max Merr. ) under Field Condition
摘要
Abstract
To study the effects of enhanced UV-B radiation on biomass, chlorophyll content and photosynthetic indices of soybean ( Glycine max Merr. ) , simulated treatments with enhanced UV-B radiation under field condition were applied and related indices were measured in this research. The results showed that, enhanced UV-B radiation inhibited the growth and development during flowering period(21. 8% for plant height and 77. 0% for dry weight) and seed-filling period(18. 9% for plant height and 20. 8% for dry weight). The UV-B radiation made the flavonoids content and malondialdehyde ( MDA) content increase during branching period(61. 7% and 35. 2% respectively) and flowering period (28. 9% and 37. 4% respectively). The net photosynthetic rate was inhibited by 23. 2%,35. 9% and 20. 8% during the three periods, respectively. The stomatal conductance was also inhibited and the intercellular CO2 concentration was increased. The enhanced UV-B radiation mainly inhibited the content of chlorophyll during branching period(19. 4%),but no significant effect on ΦPSⅡ was found. In conclusion,enhanced UV-B radiation showed significant inhibition effects on net photosynthetic rate, stomatal conductance and CO2 assimilation rate, and the growth and biomass accumulations in soybean were finally decreased.关键词
UV-B/大豆/类黄酮/光合特性/生物量Key words
UV-B/soybean/flavonoids/photosynthesis characteristics/biomass分类
农业科技引用本文复制引用
吕志伟,张令瑄,王瑾,王杰飞,张文会..田间条件下UV-B辐射增强对大豆生长及光合特性的影响[J].河南农业科学,2016,45(1):42-45,4.基金项目
国家自然科学基金项目(31200387) （31200387）
聊城大学大学生科技文化创新基金项目(SF2013294) （SF2013294）
