西北林学院学报2012，Vol.27Issue(1)：28-34,7.DOI:10.3969/j.issn.1001-7461.2012.01.06
油茶无性系果实生长期光合特性研究
Photosynthetic Characteristics in Fruit-growing Stage of Camellia olei f era Clones
摘要
Abstract
In July, during the rapid-growth period of fruit of oil-tea camellia (Camellia oleifera), diurnal changes of net photosynthetic rate(Pn), transpiration(TV), water use efficiency (WL/E) of three clones (XL67,XL1 and CK) were measured comparatively with LI-6400P portable photosynthetic system. The results showed that the diurnal changes of Pn of XL67 and CK were in unimodal curves, but that of XL1 was in a bimodal curve. Different peak value and occurring time were different ambng the clones tested. "Midday depression" phenomenon of photosynthesis was observed in all clones. The values of Pn of XL67, XL1, and CK were 6. 97, 6. 30 and 5. 72 fimol ? M-2 ? S-1 , respectively, and there were significant differences between them. Diurnal changes of Tr presented as unimodal curve while diurnal changes of WUE presented as a "U" curve. The maximun net photosynthetic rates of three clones were 9. 79 to 14. 20 μmol ? M-2 ? S-1, the light saturations of three clones were 409 to 540 μmol ? M-2 ? S-1, and the light compensation points of three clones were 58 to 82 μmol ? M-2 ? S-1, Main factors which influenced Pn were analysed by multivariate stepwise regression.关键词
油茶/产量/无性系/光合特性/果实生长期Key words
Camellia oleifera / yield/ clones/ photosynthetic characteristic/ fruit-growing stage分类
农业科技引用本文复制引用
彭邵锋,王瑞,陈永忠,王湘南,杨小胡,王玉娟,杨杨..油茶无性系果实生长期光合特性研究[J].西北林学院学报,2012,27(1):28-34,7.基金项目
林业公益性行业科研专项"油茶两系杂交种子园营建及高产培育技术研究"(200804044)、国家"十一五"科技支撑"油茶特异育种种质收集与创制"(2009BADB1B0l-01-04). （200804044）
