中文摘要：

以湖南省长沙地区主栽的5个越橘品种为研究对象,对其物候期、生长状态、光合日变化及光合特征参数进行测量和分析。结果表明：奥尼尔开花结果最早,布里吉塔开花结果最晚;生长状态上北陆的树势最强,布里吉塔树势较弱;叶绿素的含量从多到少依次是：蓝丰〉密斯蒂〉北陆〉布里吉塔〉奥尼尔;北陆、奥尼尔、密斯蒂和布里吉塔的光合—日变化均呈双峰曲线,有明显的午休现象,蓝丰则呈单峰曲线;根据光响应曲线和光合参数得出,北陆、布里吉塔和蓝丰对该地区的光条件适应性较强,奥尼尔和密斯蒂适应性稍差。因此,北陆、布里吉塔和蓝丰对该地区生态条件的总体适应性较好,可作为栽培优先考虑品种,而奥尼尔和密斯蒂大面积推广需要进一步验证。

英文摘要：

Phenological phase,growth,diurnal variations and photosynthetic parameters of 5main blueberry cultivars in Hunan province were measured and analyzed.Results show that O＇Neal blossoms first and Brigitta is the last one;Northland is the strongest cultivar of tree vigor and Brigitta is weaker;the chlorophyll contents from more to less are as follows：BluecropMistyNorthlandBrigittaO＇Neal;the diurnal variation curves of Northland,O＇Neal,Misty and Brigitta are double-peak curves with remarkable＂midday depression＂,when Bluecrop appears single-peak curve.According to the light response curve and photosynthetic characteristics,Northland,Brigitta,and Bluecrop adapt to the light conditions better than O＇Neal and Misty.Therefore,Northland,Brigitta and Bluecrop can be chosen to be the preferential cultivars because of their better adaptability,and the extension of O＇Neal and Misty needs further verification.