论文部分内容阅读
以杂交大豆(ZD2和ZD5)与普通大豆(OKD25和JN30)为试验材料,开展了杂交大豆与普通大豆光合生理特性的比较研究。结果表明:从开花盛期到鼓粒末期,杂交大豆叶片净光合速率均高于普通大豆,各品种光合速率、蒸腾速率和水分利用率的变化规律一致;杂交大豆的蒸腾速率均高于OKD25,部分时期高于JN30,JN30蒸腾速率最高值出现相对滞后而有别于其他品种;杂交大豆具有较高的水分利用率,其最高值同光合速率出现在鼓粒盛期;各品种胞间CO2浓度最高值出现时期相同,ZD5各时期胞间CO2浓度均低于JN30和OKD25(除鼓粒期),而ZD2绝大部分时期低于普通大豆;各品种气孔导度值从鼓粒盛期到鼓粒末期下降迅速,与光合和蒸腾速率相同,ZD2各时期气孔导度值均高于普通大豆,而ZD5部分时期高于普通大豆。
A comparative study on the photosynthetic characteristics between hybrid soybean and common soybean was carried out using hybrid soybean (ZD2 and ZD5) and common soybean (OKD25 and JN30) as experimental materials. The results showed that the net photosynthetic rate of hybrid soybean was higher than that of common soybean from the flowering stage to the end of drum stage, and the photosynthetic rate, transpiration rate and water use efficiency of all varieties were the same. The transpiration rate of hybrid soybean was higher than that of OKD25, In some periods, JN30 was higher than that of JN30, and the highest transpiration rate of JN30 was relatively lagged from other cultivars. Hybrid soybean had higher water use efficiency, The maximum appeared at the same period, the intercellular CO2 concentration in ZD5 was lower than that in JN30 and OKD25 (except for the drumming stage), while the ZD2 was lower than that in common soybean during most of the period. The stomatal conductance Grain end decreased rapidly, with the same photosynthesis and transpiration rate, ZD2 stomatal conductance values were higher than normal soybean, and ZD5 part of the period higher than ordinary soybeans.