不同品种蓝莓的光合特性比较研究

摘要

In this study,we examined the photosynthetic characteristics of ten southern highbush blueberry species in Dalian,north-east China.We measured the net photosynthetic rate-temperature and the net photosynthetic rate-light intensity with an LI-6400XT por-table photosynthesis system.We found that the net photosynthesis rates of Bluerain,Gulfcoast and Biloxi were the highest and that of Bluebell,Misty and Cooper were the lowest among all the measured species under high temperature conditions.Moreover,we also found that Cape Fear,O' Neal,Sharpblue and Blue Ridge had lower transpiration rates under warmer conditions.In terms of light re-sponse ability,we found that of Gulfcoast was the highest one and the order from high to low was Gulfcoast>Biloxi>Bluerain, Cape Fear,Bluebell and Cooper>Blue Ridge>O' Neal and Sharpblue>Misty.From high to low,the order of transpiration rate is Gulfcoast>Cooper and Sharpblue>Biloxi>Cape Fear and Bluebell>Blue Ridge>Misty>Bluerain>O' Neal.This study would have important significance for blueberry introducing in our country.%以大连地区引种栽培的南高丛蓝莓品种为研究对象，使用LI-6400XT测量其光合特性并进行比较。光合曲线分析表明，高温环境下光合生理活动表现较好的是蓝雨、海岸、比格克西，表现适中的是开普菲尔、奥尼尔、夏普蓝、蓝脊，表现较差的是蓝铃、薄雾、库帕；不同品种利用光强能力大小顺序为海岸＞比格克西＞蓝雨、开普菲尔、蓝铃、库帕＞蓝脊＞奥尼尔、夏普蓝＞薄雾；各品种随温度变化蒸腾耗水潜力大小顺序为海岸＞库帕、夏普蓝＞比格克西＞开普菲尔、蓝铃＞蓝脊＞薄雾＞蓝雨＞奥尼尔。研究结果对我国其他地区引种蓝莓具有重要意义。