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Position: Home > Articles > Study on the Photosynthetic Physiological Characteristics of Autotetraploid of Triarrhena lutarioriparia L. Liu Crop Research 2013,27 (3) 219-223

南荻同源四倍体光合生理特性的研究

作  者:
张闯;王惠群;童建华;李合松
单  位:
湖南农业大学生物科学技术学院/植物激素与生长发育湖南省重点实验室
关键词:
南荻;同源四倍体;光合特性
摘  要:
为揭示南荻同源四倍体的光合生理特性,以二倍体为对照,研究了盆栽条件下南荻同源四倍体生长过程中光合作用参数、地上部鲜重和干重的变化。结果表明:在整个生育期南荻同源四倍体的净光合速率、气孔导度和蒸腾速率均呈先增加后减少的单峰曲线变化,胞间CO2浓度呈先升高后降低再升高的趋势,其光合特性优于二倍体。南荻同源四倍体植株地上部鲜重随生育期推进呈先增加后降低的趋势。与生长初期相比,南荻同源四倍体收获期植株地上部干物质量显著增加。南荻同源四倍体生长生理特性优于二倍体。相关分析表明:在整个生育期南荻同源四倍体净光合速率与气孔导度之间正相关极显著;在生育后期南荻同源四倍体净光合速率与胞间CO2浓度负相关极显著。表明不同生长时期影响南荻同源四倍体光合作用的参数不同,南荻同源四倍体生长生理与其光合特性密切相关。
译  名:
Study on the Photosynthetic Physiological Characteristics of Autotetraploid of Triarrhena lutarioriparia L. Liu
作  者:
ZHANG Chuang,WANG Hui-qun,TONG Jian-hua,LI He-song *(College of Bioscience and Biotechnology/Hunan Provincial Key Laboratory of Phytohormones and Growth Development,Hunan Agricultural University,Changsha,Hunan 410128,China)
关键词:
Triarrhena lutarioriparia L.Liu;Autotetraploid;Photosynthetic characteristics
摘  要:
In order to reveal the photosynthetic characteristics of Autotetraploid of Triarrhena lutarioriparia L.Liu,the photosynthetic parameters and the top fresh weight,the top dry weight were determined under potted conditions with Diploid of Triarrhena lutarioriparia L.Liu were used as control.The results showed that net photosynthetic rate,stomatal conductance and transpiration rate in leaves of Triarrhena lutarioriparia L.Liu Autotetraploid showed the increase-decrease trend,while intercellular CO2 concentration showed the trend of increase-decrease-increase along with its growth stage.Triarrhena lutarioriparia L.Liu Autotetraploid had the advantage of photosynthetic characteristics compared with Triarrhena lutarioriparia L.Liu Diploid.The top fresh weight of Triarrhena lutarioriparia L.Liu Autotetraploid was initially increased and then decreased with its growth stage.The top dry matter in the stalk at harvest stage was significantly increased compaerd with early growth stage,.Compared with Diploid of Triarrhena lutarioriparia L.Liu,Autotetraploid of Triarrhena lutarioriparia L.Liu had the advantage of growth and physiological characteristics.Correlation analysis showed that significantly positive correlation existed between net photosynthetic rate and stomatal conductance during the whole growth stage,significantly negative correlation existed between net photosynthetic rate and intercellular CO2 concentration at late growth stage.It suggested that the impact photosynthetic parameters of Triarrhena lutarioriparia L.Liu Autotetraploid were different at different stages,and its physiological growth closely correlated with photosynthetic characteristics in Triarrhena lutarioriparia L.Liu A utotetraploid.

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