摘要
利用LI—6400便携式光合仪对中国沙棘(Hippophae Rhamnoides Sinensis)、俄罗斯沙棘(Hipp-ophae Rhamnoides)及其杂交子代的光合特征进行测定,比较其亲本及子代的差异性。结果表明光合速率日变化曲线中国沙棘及俄罗斯沙棘呈"双峰"型,杂交子代呈"单峰型";全天蒸腾速率以俄罗斯沙棘最大,中国沙棘最小;胞间CO2浓度日变化规律三者相似,均在14:00达到最小值;全天气孔导度以俄罗斯沙棘最大。
The photosynthetic characteristics diurnal changes of Hippophae rhamnoides sinensis,Hippophae rhamnoides and its hybrid was measured with Li—6400.Results showed： diural variations of photosynthetic rate is doubel-peak curve of Hippophae rhamnoides sinensis and Hippophae rhamnoides,while diural variations of photosynthetic rate of the hybrid appeared single-peak curve.Hippophae rhamnoides is the highest on the daily variation curve of transpiration,while Hippophae rhamnoides sinensis is the lowest.Hippophae rhamnoides sinensis,Hippophae rhamnoides and hybrid had a similar changing curve of diurnal variations of intercellular CO2 concentration,the lowest peak is at 14：00.Diurnal variations of stomatal conductance of Hippophae rhamnoides is the higerest.
关键词
沙棘
杂交子代
光合特征
Hippophae rhamnoides sinensis
Hippophae rhamnoides
hybrid
photosynthetic characteristics
