| 叶片老化对甘薯品种光合特性与产量的影响* |
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| 引用本文： | 海梅荣,郭华春,周华芬,罗文开,达布希拉图. 叶片老化对甘薯品种光合特性与产量的影响*[J]. 云南农业大学学报(自然科学版), 2008, 23(4): 447-451 |
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| 作者姓名： | 海梅荣 郭华春 周华芬 罗文开 达布希拉图 |
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| 作者单位： | （1.云南农业大学农学与生物技术学院,云南 昆明 650201;;2.云南农业大学资源与环境学院,云南 昆明 650201） |
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| 摘 要： | 以3个不同甘薯品种为试验材料,对3个品种的光合特性和产量进行了比较研究。结果表明:徐薯18较其他两个品种JS008和JS004的叶片净光合速率、蒸腾速率、气孔导度等光合特性有关指标随叶片的老化下降速度慢,叶片老化速度慢,T/R值小,其光合成产物分配到地下部块根的比例大,产量高。
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| 关 键 词： | 甘薯 品种 叶片老化 光合特性 产量 |
| 收稿时间： | 2007-10-23 |
| 修稿时间： | 2007-11-13 |
Effect of Leaf Aging on the Photosynthesis Characteristics and the Yield of Sweet Potato |
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| HAI Mei-rong,GUO Hua-chun,ZHOU Hua-fen,LUO Wen-kai,DABUXILATU. Effect of Leaf Aging on the Photosynthesis Characteristics and the Yield of Sweet Potato[J]. Journal of Yunnan Agricultural University, 2008, 23(4): 447-451 |
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| Authors: | HAI Mei-rong GUO Hua-chun ZHOU Hua-fen LUO Wen-kai DABUXILATU |
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| Affiliation: | (1.Faculty of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201,China;2.Faculty of Resources and Environment, Yunnan Agricultural University, Kunming 650201,China) |
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| Abstract: | The age-dependent deterioration in leaf photosynthesis was compared among the 3 sweet potato（Ipomoea batatas Lam）cultivars (Xushu18, JS008 and JS004). Cultivar Xushu18 was more sustainable in photosynthetic activity from young to aged leaves than JS008 and JS004. The relatively higher stomatal conductance of the aged Xushu 18 leaves was one of the causes for this phenomenon. The T/R of Xushu18 was lower and the yield was higher, compared with those of the other cultivars. The high photosynthetic activity and low T/R might make Xushu18 have a high yield. |
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| Keywords: | sweet potato cultivars leaf ageing photosynthesis yield |
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