引种杂交杨光合-光响应特征  

The Photosynthetic-light Response Characteristics of Hybrid Poplar

作　　者：陈勇 古丽娜儿 王兴胜 夏诗书 程平[2] 李宏[2] Chen Yong;Gulnar;Wang Xingsheng;Xia Shishu;Cheng Ping;Li Hong(Ili Experimental Center of Tree Breeding for Improved Varieties,Xinjiang Uygur Autonomous Region,Ili Xinjiang 835311;Xinjiang Academy of Forestry Sciences,Urumqi 830000)

机构地区：[1]伊犁哈萨克自治州林木良种繁育试验中心,新疆伊犁835311 [2]新疆林业科学院,乌鲁木齐830000

出　　处：《中国农学通报》2021年第28期20-27,共8页Chinese Agricultural Science Bulletin

基　　金：新疆维吾尔自治区林业发展补助资金项目“优良杨树品种的二次选育与培养研究”(新林科字[2017]26号)。

摘　　要：利用直角双曲线修正模型对伊犁地区22个引种杂交杨光合-光响应曲线进行拟合,阐明引种杂交杨光合生理特性,为伊犁地区优树选育提供参考。结果表明,‘LX-2’、‘84-306’、‘I-262’、‘D5-20’、‘D5-9’、‘DX-08-1’和‘DM-9-16’最大光合潜力较强;‘CL-6’、‘93-8-18’、‘108’、‘93-8-17’和‘LX-6’更能够适应弱光环境;‘CD-2’、‘D5-20’、‘D5-9’和‘93-8-17’对光能的转化效率更高;‘93-8-18’、‘108’、‘CL-6’和‘LX-6’暗呼吸速率低,利于有机物积累。最大光合潜力较强的品系更能够适应伊犁地区高光环境,建议多年栽植驯化光合潜力相对较小的品系,使其尽可能适宜当地环境,保留种质资源。Modified rectangular hyperbola model was used to fit the photosynthetic-light response curve of 22 introduced hybrid poplar clones in Ili, to clarify the photosynthetic and physiological characteristics, which could provide a reference for the selection of superior trees. The results showed that: the maximal photosynthetic potential of‘LX-2’,‘84-306’,‘I-262’,‘D5-20’,‘D5-9’,‘DX-08-1’and‘DM-9-16’was strong.‘CD-2’,‘D5-20’,‘D5-9’and‘93-8-17’were more efficient in the conversion of light energy.‘93-8-18’,‘108’,‘CL-6’and‘LX-6’had low dark respiration rate, which was beneficial to organic accumulation. The clones with stronger maximum photosynthetic potential were more adaptable to the high light environment in Ili. It is suggested that the clones with small photosynthetic potential should be domesticated for many years to make them as suitable as possible to the local environment and retain the germplasm resources.

关 键 词：引种 杂交杨 光合-光响应 直角双曲线修正模型 净光合速率 

分 类 号：S722.7[农业科学—林木遗传育种]