YANG Wen,YU Ze-yuan,LI Xing-guo.Study on the Photosynthetic Characteristics of Three Strawberry Cultivars[J].Northern Horticulture,2015,39(10):50-53.[doi:10.11937/bfyy.201510011]
三个草莓品种光合特性的研究
- Title:
- Study on the Photosynthetic Characteristics of Three Strawberry Cultivars
- 文章编号:
- 1001-0009(2015)10-0050-04
- 分类号:
- S 668.4
- 文献标志码:
- B
- 摘要:
- 以‘四季’、‘甜查理’、‘红颜’3个草莓品种幼苗为试材,对其光合特性进行了研究,旨在了解其光合生理特性,为提高其产量、改善品质提供依据。结果表明:3个草莓品种单叶净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)日变化曲线均呈双峰型,且同步增减,有明显的光合“午休”现象,品种间光合“午休”出现时间、最大净光合速率和蒸腾速率均有明显差异,‘四季’净光合速率2个峰值均高于其它2个品种,‘红颜’光合“午休”持续时间最短、整体蒸腾速率较低;胞间CO2浓度(Ci)日变化规律与Pn负相关,表明气孔因素不是草莓光合“午休”的主要限制因子;不同品种、不同种类光合色素含量差异显著,光合色素含量与净光合速率有关,但不呈一定的比例关系。
- Abstract:
- Photosynthetic characteristics were carried out with three strawberry cultivars(‘Siji’,‘Tianchali’,‘Hongyan’)In order to understand photosynthetic physiological characteristic hotosynthetic characteristics were carried out with three strawberry cultivars(‘Siji’,to provide reference for improving its yield and quality.The results showed that the individual leave net photosynthetic rate,stomatic conductance and transpiration rate had two peaks during a day,and synchronous increased or decreased.An obvious midday depression was observed.There was a significant difference in midday depression,maximum net photosynthetic rate and transpiration rate among the three cultivars.Two peaks of Pn of ‘Siji’ were higher than other two cultivars,the photosynthetic midday depression of ‘Hongyan’ lasted for a short period and the overall lower transpiration rate.Diurnal variation of intercellular CO2 concentration was negatively significantly correlated with Pn,showed that stoma was not a major regulation factor of midday depression.There was also a significant difference in different cultivars,different types of photosynthetic pigment,photosynthetic pigment content was related with photosynthetic rate,but not in a certain proportional relationship.
参考文献/References:
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备注/Memo
第一作者简介:杨文(1989-),女,硕士,研究方向为果树生理生态。E-mail:yangwency77@163.com.