德国酿酒葡萄品种在银川地区不同月份的光合特性研究

Study on German Wine Grape Varieties Photosynthetic Characteristics in Different Months in Yinchuan Area

以3年生德国引种的酿酒葡萄品种为试材,测定不同月份葡萄幼龄植株光合指标,研究葡萄品种光合作用的月份变化规律。结果表明:在整个生长季节内,德国酿酒品种的光合作用呈现明显的月份变化规律。不同品种净光合速率基本呈现双峰曲线分布,最高值为‘Souyigniergris’(15.04、18.06μmol·m-2·s-1)出现在5、7月。同时不同品种蒸腾速率、气孔导度、胞间CO2浓度随月份的变化有的呈单峰曲线分布,有的呈双峰曲线分布。但‘Souyigniergris’蒸腾速率在6—8月一直保持在较高水平。气孔导度和蒸腾速率之间呈正相关关系。因此,7个葡萄品种中‘Souyigniergris’光合作用最强,增产的潜力大,‘Cabernet Cortis’蒸腾速率最小,抗旱能力优于其它品种。

Choosing three-year-old wine grape seedlings introduced from Germany as the research object,the monthly change and its law of different grape varieties＇ photosynthesis were analyzed.The results showed that the photosynthesis change of German wine varieties was significant in the month.Net photosynthetic rate of different varieties was bimodal curve.The highest value（15.04,18.06μmol·m-2·s-1）of‘Souyigniergris＇ variety appeared in May and July.Meanwhile the transpiration rate,stomatal conductance and intercellular CO2 concentration of different varieties showed regular changes with extension of the month,some were single peak curve,some were bimodal curve.But transpiration rate of‘Souyigniergris＇ maintained at a high level throughout June to August.The relationship between stomatal conductance and transpiration rate were positively correlated,but intercellular CO2 concentration and net photosynthetic rate were negative correlation. Therefore, ‘Souyigniergris＇ variety in 7 grape varieties,had the strongest photosynthesis,the potential of increasing production.Transpiration rate of‘Cabernet Cortis＇ variety was the smallest,the ability of drought resistance was better than other varieties.