不同梨品种光合作用差异性的研究

用TPS-2便携式光合作用测定系统测定了5个梨品种的光合速率等光合作用参数。结果表明：不同类型梨品种的净光合速率差异不显著,以白梨品种莱阳茌梨的净光合速率最高。不同类型梨品种净光合速率的日变化曲线主要有单峰型和不对称双峰型。蒸腾速率的日变化曲线均呈单峰型。细胞间隙CO2浓度的日变化曲线出现单谷型和双谷型两种类型。气孔导度的日变化曲线则有多种类型。不同类型梨品种的光补偿点、光饱和点、CO2补偿点和CO2饱和点均存在差异。...

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Bibliographic Details
Published in江西农业学报 Vol. 24; no. 3; pp. 7 - 10
Main Author 李先明 秦仲麒 刘先琴 涂俊凡 杨夫臣 朱红艳
Format Journal Article
LanguageChinese
Published 湖北省农业科学院果树茶叶研究所,湖北武汉,430209 2012
Subjects
光合作用
品种
差异
梨
梨
光合作用
品种
差异
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ISSN1001-8581
DOI10.3969/j.issn.1001-8581.2012.03.002

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Summary:用TPS-2便携式光合作用测定系统测定了5个梨品种的光合速率等光合作用参数。结果表明：不同类型梨品种的净光合速率差异不显著,以白梨品种莱阳茌梨的净光合速率最高。不同类型梨品种净光合速率的日变化曲线主要有单峰型和不对称双峰型。蒸腾速率的日变化曲线均呈单峰型。细胞间隙CO2浓度的日变化曲线出现单谷型和双谷型两种类型。气孔导度的日变化曲线则有多种类型。不同类型梨品种的光补偿点、光饱和点、CO2补偿点和CO2饱和点均存在差异。
Bibliography:36-1124/S
The photosynthetic parameters（including photosynthetic rate） of 5 pear varieties were tested by portable photosynthesis determination system TPS-2.The results showed that the net photosynthetic rate of Laiyangchili（Pyrus bretschneideri Rehder） was the highest,but there was no significant difference in net photosynthetic rate among different pear cultivars.For the tested 5 pear cultivars,the daily variation curve of net photosynthetic rate showed two types： single-peak type and asymmetrical double-peak type,that of transpiration rate all presented single-peak type,that of intercellular CO2 concentration revealed single-valley type and double-valley type,and that of stomata conductance had many types.There were differences in light compensation point,light saturation point,CO2 compensation point and CO2 saturation point among different pear cultivars.
Pear; Cultivar; Photosynthesis; Difference
LI Xian-ming,QIN Zhong-qi,LIU Xian-qin,TU Jun-fan,YANG Fu-chen,ZHU Hong-yan（Institute of Fruit and Tea,Hubei Aca
ISSN:1001-8581
DOI:10.3969/j.issn.1001-8581.2012.03.002