吐鲁番四个葡萄品种光合日变化及其光响应特征

【目的】对4个葡萄品种光合特性进行比较研究,确定在吐鲁番特殊气候条件下的光合能力,为引种和栽培提供指导。【方法】用英国产的TPS-2型便携式光合测定仪活体测定无核紫、红地球、巨峰、里扎马特葡萄光合参数日变化特征、相关气象因子、光合-光响应特征等。【结果】除无核紫葡萄外,红地球、巨峰、里扎马特三个品种Pn均存在午休现象,无核紫的Pn总体较高,日变化曲线没有明显的峰值和低谷,WUE总体较其他品种高,LCP最低,LSP和LCP之间的范围最大。里扎马特Pn和WUE总体较其他品种低,LCP最高。【结论】从4个品种的光合作用情况看,无核紫光合能力表现较好,相对适宜吐鲁番的特殊气候,里扎马特表现较差。

Diurnal Variations and Light Responses of Four Grape Varieties in Turpan

【Objective】The purpose of this study was to provide guidance for the grape cultivation and introduction by comparatively studying the photosynthetic capacity of four grape varieties in the special climatic condition in Turpan.【Method】Photosynthetic instrument TPS-2 was applied to mensurate the photosynthesis parameters of diurnal changes,meteorological factors,characteristics of photosynthesis and light-response of Monukka,Red globe,Kyoto grape,Rizamat.【Result】 The results showed that midday depression were found in all species,except for Monukka.There were no obvious peaks and valleys in diurnal variation in Monukka.The WUE of Monukka was higher than that of the other varieties,whereas LCP was the lowest among the four grape varieties and the variation was the largest between LSP and LCP.In Rizamat,Pn and WUE were lower than those of the other varieties whereas LCP was the highest.【Conclusion】Based on diurnal variations and light responses of four grape varieties,it was concluded that Monukka was the best and adapted well to the climate of Turpan among four grape varieties,while Rizamat wasn't fit to be planted in Turpan.