4个核桃品种光合特性的日变化

宗建伟; 杨雨华; 杨风岭; 梁亚红; 刘杜玲; 朱海兰

4个核桃品种光合特性的日变化

摘要: 采用LI6400便携式光合测定仪，分析鲁光、扎343、强特勒、中林5号4个核桃（Juglans regia）品种光合特性的日变化，以期为核桃的优质高产和规范化生产提供理论依据。结果表明，4个不同的核桃品种净光合速率（Pn）日变化均呈现双峰曲线，且在14:00均出现显著的午休现象；强特勒、中林5号较鲁光和扎343更早地受到了光抑制。4个核桃品种Pn与光合有效辐射（PAR）均存在显著正相关，相关系数由大到小依次为扎343强特勒鲁光中林5号。

关键词:

净光合速率；蒸腾速率；气孔导度；水分利用效率

English

Diurnal changes of photosynthetic characters of four Juglans regia cultivars

Publish Date: 2013-03-14

Abstract: Diurnal changes of photosynthetic characteristics in four Juglans regia cultivars were studied by LI6400 portable photosynthesis analyzer for a theoretical basis of higheryield，higherquality and standardized production .The results showed that the diurnal changes of Pn in the four cultivars, all exhibited double peak curve and significant lunch break phenomenon at 14:00; Photoinhibition of Qiangtele and Zhonglin5 occurred earlier than Luguang and Zha343.There was a significant positive correlation between Pn and PAR of four cultivars in Juglans regia , however, their correlation coefficient was different, correlation coefficient descending order: Zha343＞Qiangtele＞Luguang＞Zhonglin5

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4个核桃品种光合特性的日变化

English

Diurnal changes of photosynthetic characters of four Juglans regia cultivars

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