Distribution of newly fixed C-14-photoassimilate under deficit irrigation and half-root stress in peach trees

doi:10.1016/j.plantsci.2009.09.006

CORC > 武汉植物园 > 中国科学院武汉植物园

	Distribution of newly fixed C-14-photoassimilate under deficit irrigation and half-root stress in peach trees
	Yuan, Jin H.2,3; Dai, Zhan W.2; Zhao, Jun Y.2; Li, Shao H.1
刊名	PLANT SCIENCE
	2009-12-01
卷号	177 期号:6 页码:691-697
关键词	C-14-Photoassimilate distribution Peach Sink strength Water stress
ISSN号	0168-9452
DOI	10.1016/j.plantsci.2009.09.006
英文摘要	Two-year-old potted peach 'Zaojiubao' (Prunus persica L. Batsch) trees on wild P. persica rootstock were subjected either to regulated deficit irrigation (RDI), in which trees were water stressed during fruit pit hardening (stage II) followed by rewatering during the final rapid fruit growth stage (stage III), or to half-root stress (HRS) treatments during the same two stages. To investigate the allocation of carbon assimilates among sink organs, shoots were fed with (CO2)-C-14 twice, either during stage II or stage III The distribution coefficient (K) represented the competitive sink strength. RDI and HRS induced an altered allocation pattern of C-14-assimilates. The import to shoot apexes was reduced. However, there were no significant reduction in fruit diameter and weight. Moreover, the Ks of the fruit subparts of RDI and HRS treated trees were similar to or sometimes higher than those of CK trees. There were more C-14-assimilates and higher K values of seeds from RDI trees during stage III compared with CK In addition, stressed roots seemed to have stronger abilities to attract C-14-assimilates. It is concluded that RDI and HRS resulted in a decreased sink activity in the shoot and a change of carbon allocation toward stressed roots and seeds without negative effects on fruit growth. (C) 2009 Elsevier Ireland Ltd. All rights reserved
资助项目	Chinese Ministry of Agriculture Specific foundation for public welfare[nyhyzx07-025]
WOS研究方向	Biochemistry & Molecular Biology ; Plant Sciences
语种	英语
出版者	ELSEVIER IRELAND LTD
WOS记录号	WOS:000271552000024
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/1008]
专题	中国科学院武汉植物园
通讯作者	Li, Shao H.
作者单位	1.Chinese Acad Sci, Wuhan Bot Garden, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Jin H.,Dai, Zhan W.,Zhao, Jun Y.,et al. Distribution of newly fixed C-14-photoassimilate under deficit irrigation and half-root stress in peach trees[J]. PLANT SCIENCE,2009,177(6):691-697.
APA	Yuan, Jin H.,Dai, Zhan W.,Zhao, Jun Y.,&Li, Shao H..(2009).Distribution of newly fixed C-14-photoassimilate under deficit irrigation and half-root stress in peach trees.PLANT SCIENCE,177(6),691-697.
MLA	Yuan, Jin H.,et al."Distribution of newly fixed C-14-photoassimilate under deficit irrigation and half-root stress in peach trees".PLANT SCIENCE 177.6(2009):691-697.