Tolerance vs. avoidance: two strategies of soybean (Glycine max) seedlings in response to shade in intercropping

doi:10.1007/s11099-015-0103-8

	Tolerance vs. avoidance: two strategies of soybean (Glycine max) seedlings in response to shade in intercropping
	Gong, W. Z.; Jiang, C. D.; Wu, Y. S.; Chen, H. H.; Liu, W. Y.; Yang, W. Y.
	2015
发表期刊	PHOTOSYNTHETICA
ISSN	0300-3604
卷号	53 期号:2 页码:259-268
摘要	Intercropping is a sustainable agricultural practice used worldwide for highly efficient utilization of resources. However, short crops often grow under the shade of the canopy of tall crops in intercropping systems. Plants evolved two main strategies to deal with shade: avoidance and tolerance. Soybean (Glycine max), a legume crop, is often planted in intercropping. But little is known about a strategy that soybean may employ to deal with shade at seedling stage. Therefore, we determined morphological and physiological traits related to shade tolerance and shade avoidance in seedlings of two varieties. Generally, both varieties showed similar shade tolerance traits, such as increased specific leaf area and chlorophyll (Chl) content, and reduced photosynthetic capacity and the Chl a/b ratio. The light-limiting environment eliminated the benefits of shade tolerance traits for the carbon gain, which led to similar real-time photosynthesis and biomass in intercropping. By contrast, two varieties expressed different changes in shade avoidance traits. The variety Guixia 3 exhibited clear preference of shade avoidance that resulted in a high main stem, hypocotyl elongation, and biomass allocation towards the stem. The variety Gongxuan 1 showed those traits less. We suggested that the genetic variation occurs within soybean, thus the shade avoidance related traits might be important for variety selection for intercropping. Hence, the evaluation of performance should focus on shade avoidance in soybean genotypes in future experiments.
关键词	biomass partitioning gas exchange leaf structure monocropping palisade mesophyll stem elongation
学科领域	Plant Sciences
DOI	10.1007/s11099-015-0103-8
收录类别	SCI
语种	英语
WOS关键词	PHOTOSYNTHESIS ; LIGHT ; NITROGEN ; SUN ; COMPETITION ; LEAVES ; YIELD ; WHEAT ; PHYTOCHROMES ; IRRADIANCE
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000354955000013
出版者	ACAD SCIENCES CZECH REPUBLIC, INST EXPERIMENTAL BOTANY
文献子类	Article
出版地	6 PRAGUE
EISSN	1573-9058
资助机构	National Natural Science Foundation of China [31171476, 31071373] ; National Program on Key Basic Research Project [2011CB100402] ; China Agriculture Research System [CARS-04-PS19]
作者邮箱	wenyu.yang@263.net
引用统计	被引频次：96[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25727
专题	中科院北方资源植物重点实验室
作者单位	1.[Gong, W. Z. 2.Wu, Y. S. 3.Chen, H. H. 4.Liu, W. Y. 5.Yang, W. Y.] Sichuan Agr Univ, Coll Agron, Chengdu 611130, Peoples R China 6.Yang, W. Y.] Minist Agr, Key Lab Crop Ecophysiol & Farming Syst Southwest, Chengdu 611130, Peoples R China 7.[Jiang, C. D.] Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Gong, W. Z.,Jiang, C. D.,Wu, Y. S.,et al. Tolerance vs. avoidance: two strategies of soybean (Glycine max) seedlings in response to shade in intercropping[J]. PHOTOSYNTHETICA,2015,53(2):259-268.
APA	Gong, W. Z.,Jiang, C. D.,Wu, Y. S.,Chen, H. H.,Liu, W. Y.,&Yang, W. Y..(2015).Tolerance vs. avoidance: two strategies of soybean (Glycine max) seedlings in response to shade in intercropping.PHOTOSYNTHETICA,53(2),259-268.
MLA	Gong, W. Z.,et al."Tolerance vs. avoidance: two strategies of soybean (Glycine max) seedlings in response to shade in intercropping".PHOTOSYNTHETICA 53.2(2015):259-268.

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