杨凌地区3个葡萄品种光合特性比较  

Comparative analysis of photosynthetic characteristics of three grapevine cultivars grown in Yangling

作　　者：房林[1] 张振文[1,2] 贾媛媛[3] 李晨[1] 

机构地区：[1]西北农林科技大学葡萄酒学院,陕西杨凌712100 [2]陕西省葡萄与葡萄酒工程技术研究中心,陕西杨凌712100 [3]西北农林科技大学生命学院,陕西杨凌712100

出　　处：《干旱地区农业研究》2009年第5期203-208,共6页Agricultural Research in the Arid Areas

摘　　要：测定杨凌地区大田中六年生小白玫瑰,法国蓝,白玉霓3不同葡萄品种在浆果膨大、转色以及成熟期的净光合速率,以比较其光合生理特性,为其科学种植寻找理论依据。结果表明,①在浆果膨大期,第2节位主叶的净光合速率(Pn)高于副梢叶片,而在转色和成熟期主叶又小于副梢,第10节位主叶在不同物候期一直高于副梢叶片;②不同时期上下冠层Pn:上冠层>下冠层;③不同品种间Pn:法国蓝>白玉霓>小白玫瑰。Study on the photosynthetic characteristics of different grapevine cuhivars at different period was conducted in Yangling by Li-6400 portable photo synthesis system to provide theoretical basis for their scientific planting. The results show as the following： ① The net photosynthetic rate（Pn） of the leaf in second position is higher than secondary shoot in the berry expanding stage, and is lower than secondary shoot in the turning- color period and maturity period while the leaf in tenth position is always higher than the secondary shoot in different period ; ②The Pn of canopy at different periods： the top is higher than the root; ③ The Pn of different grapevine cuhivars is in the order of： Blue French 〉 Ugni Blanc 〉 Muscat Blanc.

关 键 词：葡萄 叶位 光合作用 

分 类 号：Q945.1[生物学—植物学]