| 不同需冷量桃品种营养生长和光合特性研究 |
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| 引用本文： | 曹珂,王力荣,朱更瑞,方伟超.不同需冷量桃品种营养生长和光合特性研究[J].果树学报,2007,24(3):282-286. |
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| 作者姓名： | 曹珂 王力荣 朱更瑞 方伟超 |
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| 作者单位： | 中国农业科学院郑州果树研究所,郑州,450009 |
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| 摘 要： | 为了探明温带地区低需冷量桃早期丰产性的生理机制,以不同需冷量桃植株为试材,对其在郑州地区下半年生长季节的光合特性进行了研究。结果表明,在相同的生长期,低需冷量桃表现出较中、长需冷量种质更高的营养产物积累。分析其营养生长的影响因子认为,光合叶面积与植株营养生长相关性不明显,单叶净光合日总量才是低需冷量种质营养旺盛积累的主要原因,而单叶净光合日总量是植株较低的暗呼吸速率、光补偿点和较高的10:00光合速率、水分利用效率的综合表现。低需冷量桃在温带地区的这些光合特性可能是由它固有的遗传基础和植株对温带地区环境调节共同作用的结果。
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| 关 键 词： | 桃 低需冷量 生态适应性 |
| 文章编号： | 1009-9980（2007）03-282-05 |
| 修稿时间： | 2006-08-31 |
Study on vegetative growth and photosynthetic characteristics of different chill-requirement peach cultivars |
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| CAO Ke,WANG Li-rong,ZHU Geng-rui,FANG Wei-chao.Study on vegetative growth and photosynthetic characteristics of different chill-requirement peach cultivars[J].Journal of Fruit Science,2007,24(3):282-286. |
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| Authors: | CAO Ke WANG Li-rong ZHU Geng-rui FANG Wei-chao |
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| Institution: | Zhengzhou Fruit Research Institute, CAAS , Zhengzhou , Henna 450009 China |
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| Abstract: | In order to study the reasons caused the early high production of low chill-requirement peach cultivars grown in temperate zone,different chill-requirement cultivars were selected for studying their photosynthetic characteristics in summer at Zhengzhou area,Henan province. The results showed that: with same growing period,low chill peach cultivars had a higher accumulation of nutritious matters than those of high chill cultivars. There was no obviously relationship between the photosynthesis area and vegetative growth,but the Pn per leaf unit in whole day was a significant factor for vegetative growth of a plant. The lower respiration rate,light compensation point and the higher Pn at 10 O'clock,and water-using efficiency offer a huge contribution to Pn per leaf unit in whole day of low chill peach germplasm,showing that the photosynthetic characteristics of low chill peach cultivars was the combined effects of genetic basis and adaptability to growing environment in temperate zone. |
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| Keywords: | Low chill-requirement Peach Physiological-ecological adaptability |
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