高温对观赏海棠生长和光合作用的影响

刘春风; 张往祥; 孙垒; 阮俊阳; 王涛; 曹福亮

doi:10.3969/j.issn.1000-2006.2013.04.004

高温对观赏海棠生长和光合作用的影响

刘春风,张往祥,孙垒,阮俊阳,王涛,曹福亮

南京林业大学学报（自然科学版） ›› 2013, Vol. 37 ›› Issue (04) : 17-22.

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南京林业大学学报（自然科学版） ›› 2013, Vol. 37 ›› Issue (04) : 17-22. DOI: 10.3969/j.issn.1000-2006.2013.04.004

研究论文

高温对观赏海棠生长和光合作用的影响

刘春风,张往祥,孙垒,阮俊阳,王涛,曹福亮^*

作者信息 +

Effects of high temperature on photosynthesis and growth of crabapple seedling

LIU Chunfeng,ZHANG Wangxiang,SUN Lei,RUAN Junyang,WANG Tao,CAO Fuliang^*

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文章历史 +

摘要

通过对耐热性不同的3个海棠品种在生长季的生长、光合作用和高温期光合日变化的测定,探讨海棠光合作用对高温的响应机制,分析其光合作用、生长与耐热性之间的关系。结果表明:高温胁迫下,3个海棠品种的P_n下降,生长速率也随之下降,品种间差异显著。耐热性强的品种P_n下降幅度较小且下降时间为高温后期,生长速率降幅较小; 耐热性弱的品种P_n下降幅度较大且下降时间为高温早期,生长速率降幅较大。3个海棠品种的P_n日变化曲线均呈“双峰型”,具明显光合“午休”现象。非气孔因素是海棠光合“午休”的主要原因。

Abstract

In order to explore the photosynthesis response mechanism of crabapple seedling to high temperature, the growth and photosynthesis of three crabapple varieties during the growing season and photosynthetic diurnal variation in high temperature period were examined. The study provided the theoretical basis for promotion and cultivation of crabapple varieties. The results were as follows: high temperature stress caused net photosynthetic rate and the growth rate of three crabapple varieties decline, there was significant difference among them. The heat-tolerant variety remained faster growth rate and the decline of its net photosynthetic rate was lighter than weak heat-tolerant variety, and occured in the late of high temperature phase, while weak heat-tolerant variety occured in the early of high temperature phase. Their diurnal variation curve of net photosynthetic rate was a typical double peak type, and are obvious “midday depression of photosynthesis” phenomenon, but the main reason of this phenomenon was not caused by stomatal closure.

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刘春风,张往祥,孙垒,阮俊阳,王涛,曹福亮. 高温对观赏海棠生长和光合作用的影响[J]. 南京林业大学学报（自然科学版）. 2013, 37(04): 17-22 https://doi.org/10.3969/j.issn.1000-2006.2013.04.004

LIU Chunfeng,ZHANG Wangxiang,SUN Lei,RUAN Junyang,WANG Tao,CAO Fuliang. Effects of high temperature on photosynthesis and growth of crabapple seedling[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2013, 37(04): 17-22 https://doi.org/10.3969/j.issn.1000-2006.2013.04.004

中图分类号： S718

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基金

收稿日期:2013-03-19 修回日期:2013-06-09
基金项目:江苏省农业自主创新项目(cx(10)117, cx(12)2043); 江苏省科技支撑计划(BE2012351)
第一作者:刘春风,博士生。*通信作者:曹福亮,教授。E-mail:lcfen949@sina.com。
引文格式:刘春风,张往祥,孙垒,等. 高温对观赏海棠生长和光合作用的影响[J]. 南京林业大学学报:自然科学版,2013,37(4):17-22.