摘要
以引进的3个葡萄柚品种"哈路比"、"火焰"和"瑞路比"为研究对象,用Li-6400便携式光合仪测定光合特性并对比其光合特性的差异。结果表明:"哈路比"的净光合速率(Pn)、气孔导度(Gs)和水分利用率(WUE)最高,"火焰"次之,"瑞路比"最低;"瑞路比"的蒸腾速率(Tr)最高,"哈路比"最低;"火焰"的胞间CO2浓度(Ci)最高,"哈路比"次之,"瑞路比"最低;不同品种葡萄柚的净光合速率日变化为"双峰"曲线,具有明显的"午休"现象;蒸腾速率日变化总体趋势是先升后降。
With the introduced three fine varieties of grapefruit ‘ Hudson Foster＇, ‘Flame＇ and‘ Ray Ruby＇ as the research object,its photosynthetic characteristics by Li-6400 portable photosynthesis system was analyzed and determined. The results showed that,the net photosynthesis rate （Pn）,stomatal conductance （Gs） and water use efficiency （WUE） of ‘Hudson Foster＇ were the highest,‘ Flame ＇ was the second, ‘ Ray Ruby＇ was the last; while‘Ray Ruby＇ had the highest value of the transpiration rate （Tr）,＇ Hudson Foster＇ was the last; the intercellular CO2 concentration （Ci） of‘Flame＇ was higher than‘ Hudson Foster’ while‘ Ray Ruby＇ was the lowest;the net photosynthetic rate of different varieties of grapefruit for typical bimodal curve, the daily change had obvious＂noon break＂phenomenon;daily variation of transpiration rate overall trend was increased before they were reduced.
出处
《北方园艺》
CAS
北大核心
2015年第13期6-9,共4页
Northern Horticulture
基金
科技部国际合作资助项目(2014DFA31060)
关键词
葡萄柚
光合日变化
蒸腾
净光合速率
水分利用率
grapefruit
diurnal variation of photosynthesis
transpiration
net photosynthesis rate
water use efficiency
