摘要
研究不同光照度(分别为自然光照的100%、75%、50%)对广西地不容(Stephania kwangsiensis)植株光合特性以及抗氧化酶系统的影响。结果表明,在不同光照度下,广西地不容的光合特性以及抗氧化酶系统均表现出明显差异。随着光强的增加,广西地不容的光补偿点、光饱和点、暗呼吸效率、表观量子效率、净光合速率、气孔导度、蒸腾速率、过氧化物酶、过氧化氢酶以及脯氨酸含量均呈上升趋势,而胞间二氧化碳浓度呈先降后升的趋势,超氧化物歧化酶活性呈先升高后下降的趋势。光照度影响广西地不容植株的光合特性与抗氧化酶活性,高光强对于广西地不容的生长有抑制作用,75%光照度为广西地不容最佳生长条件。广西地不容的种植栽培应采取适当的遮阴处理,有利于植株生长,从而提高广西地不容的产量。
Effects of different light intensities(100%,75%and 50%of natural light)on photosynthetic characteristics and antioxidant enzyme system of Stephania kwangsiensis were studied.The results showed that there were significant differences in photosynthetic characteristics and antioxidant enzyme system of S.kwangsiensis under different light intensities.With the increase of light intensity,the light compensation point,light saturation point,dark respiration efficiency,apparent quantum efficiency,net photosynthetic rate,stomatal conductance,transpiration rate,peroxidase,catalase and proline contents of S.kwangsiensis showed an increasing trend,while the intercellular carbon dioxide concentration decreased first and then increased.The activity of superoxide dismutase(SOD)showed a trend of increasing first and then decreasing.In conclusion,the light intensity affected the photosynthetic characteristics and antioxidant enzyme activity of S.kwangsiensis,high light intensity had an inhibitory effect on the growth of S.kwangsiensis,and 75%light intensity was the best growth condition of S.kwangsiensis.Appropriate shading treatment should be adopted in the cultivation of S.kwangsiensis,which is conducive to plant growth and thus improves the yield of S.kwangsiensis.
作者
邓丽丽
秦惠珍
史艳财
邹蓉
蒋运生
熊忠臣
DENG Li-li;QIN Hui-zhen;SHI Yan-cai;ZOU Rong;JIANG Yun-sheng;XIONG Zhong-chen(Guangxi Institute of Botany,Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences,Guilin 541006,Guangxi,China)
出处
《湖北农业科学》
2022年第12期81-85,共5页
Hubei Agricultural Sciences
基金
云浮市2021年中医药(南药)产业人才项目
广西植物研究所基本业务费项目(桂植业21012)。
