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| 土壤水分胁迫对甘薯光合作用的影响及其与耐旱性的关系 | |
| 引用本文： | 李文卿,潘廷国,柯玉琴,陈凤翔.土壤水分胁迫对甘薯光合作用的影响及其与耐旱性的关系[J].福建农林大学学报(自然科学版),1999,28(3):1. |
| 作者姓名： | 李文卿 潘廷国 柯玉琴 陈凤翔 |
| 作者单位： | 1. 福建省烟草农业科学研究所,三明,365001 2. 福建农业大学基础部 3. 福建农业大学作物学院,福州,350002 |
| 摘 要： | 采用盆栽水分胁迫方法研究了耐旱特性不同的２ 个甘薯品种潮薯１ 号（耐旱）和胜利百号（不耐旱）的光合作用变化．结果表明，水分胁迫引起了甘薯叶片水势（ψ）和蒸腾速率（ Ｔｒ）下降，叶绿素总量（ Ｃｈｌ）、叶绿素ａ（ Ｃｈｌａ）、叶绿素ｂ（ Ｃｈｌｂ）和类胡萝卜素（ Ｃ Ａ Ｒ）被降解；气孔导度（ Ｇｓ）和净光合速率（ Ｐｎ）下降，但胞间 Ｃ Ｏ２ 体积分数（ Ｃｉ）表现出先下降后上升的趋势．甘薯品种耐旱特性不同，变化幅度有明显的差异 |
| 关 键 词： | 甘薯 土壤 水分胁迫 光合作用 耐旱性 |
| 修稿时间： | 1999－05－21 |
Effects of soil water stress on photosynthesis in leaves of sweet potato and their relation to drought tolerance |
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| Li Wenqing,Pan Tingguo,Ke Yuqin,Chen Fengxiang.Effects of soil water stress on photosynthesis in leaves of sweet potato and their relation to drought tolerance[J].Journal of Fujian Agricultural and Forestry University,1999,28(3):1. | |
| Authors: | Li Wenqing Pan Tingguo Ke Yuqin Chen Fengxiang |
| Abstract: | Two sweet potato varieties with different responses to drought condition, Chaoshu 1 (drought tolerant) and Okinawa 100 (drought sensitive), were used as experimental materials to study the changes of photosynthesis under soil water stress. Under soil water stress, water potential ( ψ ) in leaves and transpiration rate (Tr) were decreased, chlorophyll (Chl), chlorophyll a (Chla), chlorophyll b (Chl) and carotenoid (CAR) were decomposed. It confirmed the decrease of net photosynthetic rate (Pn) was due to stomatal and non stomatal factors that stomatal conductance (Gs) and Pn was decreased, but intercellular CO 2 concentratiom (Ci) was decreased, and then increased. The ranges of changes were distinct with the difference of drought tolerance between varieties. |
| Keywords: | sweet potato soil water stress photosynthesis drought tolerance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |