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。
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
出处
《草业科学》
CAS
CSCD
北大核心
2013年第3期397-401,共5页
Pratacultural Science
基金
河南省教育厅自然科学基础研究计划项目(12B180026)
河南省林业厅林业推广项目(2011021)
平顶山学院高层次人才科研启动经费(2011010/G)
平顶山学院"生态地理学"重点学科
平顶山学院青年科研基金启动项目(20120018)
关键词
净光合速率
蒸腾速率
气孔导度
水分利用效率
net photosynthetic rate
transpiration rate
stomatal conductance
water use efficiency
