花青素型甘薯不同生长时期光合光响应特性研究  

Study on Photosynthetic Light Response Characteristics of Anthocyanin-Type Sweet Potato in Different Growth Periods

作　　者：张磊[1,2] 刘维正[2] 辛国胜[2] 韩俊杰[2] 商丽丽[2] 邱鹏飞[2] 林祖军[2] 

机构地区：[1]烟台大学生命科学学院,山东烟台264005 [2]烟台市农业科学研究院,山东烟台265500

出　　处：《山东农业科学》2015年第5期23-26,共4页Shandong Agricultural Sciences

基　　金：国家甘薯产业技术体系"烟台综合试验站"(CARS-11-C-09-2014);烟台市科技发展计划项目"甘薯新型高产;高效;轻简化覆膜栽培技术集成研究"(2013JH019)

摘　　要：本试验对花青素型甘薯烟紫薯2号(Y2)、烟紫薯3号(Y3)和日本紫薯(RZ)不同生长时期的光合光响应变化和光合参数进行研究。结果表明,花青素型甘薯最大净光合速率(Pnmax)以块根膨大初期最大,其次是块根盛长期,块根膨大末期小,各时期间差异均显著(P<0.05);块根膨大末期的初始量子效率(α)远高于膨大初期值,而光饱和点(Isat)却相反,不同生长时期的光补偿点(Ic)和暗呼吸速率(Rd)无明显差异。对不同品种光合特性比较表明,块根盛长期的α和Rd以RZ为最高,其次是Y2,Y3最低,但Y3的Isat最高;块根膨大末期RZ的Pnmax和Isat均显著高于Y2和Y3,而RZ的Rd则最低。anthocyanin - tato （RZ）, in In this experiment, the photosynthetic light response and photosynthetic parameters of three type sweet potato varieties, Yanzishu 2 different growth periods were studied. rate （ Primax） of anthocyanin - type sweet potato as the （ Y2）, Yanzishu 3 （ Y3 ） and Japanese purple sweet po- The results showed that the maximum net photosynthetic largest in the initial root -enlargement period, and then rapid root - enlargement period, late root - enlargement period in order. The differences between different growth periods were significant （ P 〈 0.05 ）. The initial quantum efficiency （α） of latter root - enlargement period was much bigger than the initial value, but the light saturation point （Isat） was opposite. The differ- ences in light compensation point （Ic） and dark respiration rate （Rd ） between different growth periods were not significant. Compared between different varieties, RZ had the highest ct and Rd in the rapid enlargement period of root, followed by Y2 and Y3 ; Y3 had the hightest Isat. In the late growth period, the Pnmax and I sat of RZ were all significantly higher than those of Y2 and Y3, but Ra of RZ was the lowest.

关 键 词：花青素型甘薯 不同生长时期 光合光响应 最大净光合速率 

分 类 号：S531.01[农业科学—作物学]