摘要
采用大田小区试验,在相对一致的环境中,比较观测了国内9省20个县龙须草野生种质资源(居群)的叶片光合性能和光合色素参数,并对叶片光合功能进行了综合评价。结果表明:供试龙须草居群间叶片净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、胞间CO2浓度(Ci)和水分利用率等光合性能参数存在差异,叶片叶绿素A、叶绿素B和类胡萝卜素含量以及叶绿素A+B和叶绿素A/B等光合色素参数也存在差异,均达到极显著水平;根据叶片光合功能综合评价得分,认为湖南慈利、湖北郧县和河南西峡居群是龙须草新品种选育最优的种质资源。
Parameters of photosynthesis ability and photosynthetic pigment of leaf of wild Eulaliopsis binate gerrnplasm resources （populations） from nine provinces and 20 counties in China were observed and compared under relatively uniform environment, and leaf photosynthetic function were comprehensive evaluated. The results indicated that there were differences in photosynthesis ability parameters （net photosynthetic rate （Pn）, stomatal conductance （Gs）, transpiration rate （Tr）, intercellular C02 concentration （Ci） and water use efficiency） and photosynthetic pigment parameters （chlorophyll A, chlorophyll B, carotenoid content, chlorophyll A＋B and chlorophyll A/B） among populations of Eulaliopsis binate, which all reached extremely significant level. Wild populations of Eulaliopsis binate from Hunan Cili, Hubei Yunxian and Henan Xixia were considered as optimum germplasm resources for breeding new varieties of Eulaliopsis binate according to the comprehensive evaluation score of leaf photosynthetic function.
出处
《湖南农业科学》
2012年第9期35-39,共5页
Hunan Agricultural Sciences
基金
国家"863"计划项目(2011AA100209)
关键词
龙须草
居群
光合性能
光合色素
光合功能
综合评价
Eulaliopsis binate
population
photosynthesis ability
photosynthetic pigment
photosynthetic function
comprehensive evaluation
