| 低温胁迫对海南红豆和南五味子幼苗光合特性的影响 |
| |
| 引用本文： | 郭淑红,杨振意,张柔,薛立.低温胁迫对海南红豆和南五味子幼苗光合特性的影响[J].湖南林业科技,2012(1):17-20. |
| |
| 作者姓名： | 郭淑红 杨振意 张柔 薛立 |
| |
| 作者单位： | 华南农业大学林学院,广东广州510642 |
| |
| 基金项目： | 广东省林业局资助项目（F09054）;广东省林业科技创新专项资金项目（2010KJCX013-01）. |
| |
| 摘 要： | 对海南红豆和南五味子的1年生实生容器苗进行3℃的低温胁迫处理后,研究其光合特性的变化。结果表明:低温胁迫处理后,海南红豆和南五味子幼苗叶片的净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)和气孔限制值(Ls)均下降,而叶片细胞间隙CO2浓度(Ci)上升。低温胁迫6 d后的海南红豆各项光合指标的变化幅度均比南五味子大,说明后者比前者更耐寒。
|
| 关 键 词： | 低温胁迫 海南红豆 南五味子 光合特性 抗寒性 |
Effects of low temperature stress on photosynthetic of Ormosia pinnata and Kadsura longipedunculata seedlings |
| |
| GUO Shuhong,XUE Li.Effects of low temperature stress on photosynthetic of Ormosia pinnata and Kadsura longipedunculata seedlings[J].Hunan Forestry Science & Technology,2012(1):17-20. |
| |
| Authors: | GUO Shuhong XUE Li |
| |
| Institution: | , YANG Zhenyi, ZHANG Rou ( College of Forestry, South China Agricultural University, Guangzhou 510642, China) |
| |
| Abstract: | The photosynthetic physiology of Ormosia pinnata and Kadsura longipedunculata seedlings at low temperature stress （3 °C ） was studied with test materials of one-year-old seedling. The results showed that the net photosynthetic rate （ Pn ）, stomatal conduct- ance（ Gs ）, transpiration rate （ Tr ） and stomata limitation （ Ls ） decreased significantly, while intercellular CO2 concentration （ Ci ） increased under low temperature stress for 0. pinnata andK longipedunculata seedlings. Under low temperature stress of after 6 days, the range of variation photosynthetic indices of 0. pinnata were much higher than that ofK Iongipedunculata. The results suggested that low temperature resistance in K. longipedunculata was greater than in 0. pinnata. |
| |
| Keywords: | low temperature stress Ormosia pinnata Kadsura longipedunculata photosynthetic characteristic cold resistance |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
