会议论文

Daily changes of Photosynthetic Characteristics of four cultivars of tung tree (Vernicia fordii)

中文

2012

1-6

中国林学会经济林分会2012年学术年会

中国林学会经济林分会2012年学术年会论文集

2012-11-01

浙江临安

中国林学会

本校为第一机构

　　利用Li-6400 便携式光合测定系统，测定了4个油桐品种光合指标的日变化。结果表明：(1)‘葡萄桐’、‘小米桐’、‘对年桐’的净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)日变化均呈单峰曲线，‘大米桐’的净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)的日变化呈双峰曲线；(2) 4个品种的胞间CO2 浓度(Ci)日变化呈不规则的“V”字型；(3) 净光合速率日变化平均值大小排序为：‘葡萄桐’＞‘小米桐’＞‘对年桐’＞‘大米桐’；(4) 影响油桐净光合速率值的主要生态生理指标大小依次为：蒸腾速率＞胞间CO2 浓度＞光合有效辐射＞气孔导度。

　　The photosynthetic characteristics of four cultivars of tung tree were measured with lico-6400 photosynthetic instrument.The results showed that:⑴ Net photosynthetic rate,stomatal conductance and transpiration rate of the cultivas‘Putaotong’,‘Xiaomitong’and ‘Duiniantong’were changed as single peak curve,while ‘Damitong’was changed as bimodal peak curve;(2) Intercellular CO2 of four cultivars of tung tree concentration appeared to vary in a V-shaped curve; (3)The order in daily chang of average net photosynthetic rate of them was ta...