Exogenous Application of Abscisic Acid, Putrescine, or 2,4-Epibrassinolide at Appropriate Concentrations Effectively Alleviate Damage to Tomato Seedlings from Suboptimal Temperature Stress

	Exogenous Application of Abscisic Acid, Putrescine, or 2,4-Epibrassinolide at Appropriate Concentrations Effectively Alleviate Damage to Tomato Seedlings from Suboptimal Temperature Stress
	Jiang, Weijie; Bai, Jie; Yang, Xueyong; Yu, Hongjun; Liu, Yanpeng
刊名	HORTTECHNOLOGY
	2012
卷号	22 期号:1 页码:137-144
关键词	plant growth regulators abiotic stresses vegetable production Solanum lycopersicum
ISSN号	1063-0198
通讯作者	Jiang, Weijie
英文摘要	The application of plant growth regulators (PGRs), such as abscisic acid (ABA), putrescine (Put), and 2,4-epibrassinolide (EBR), has been shown to enhance a plant's resistance to various abiotic stresses. However, the protective effects of these PGRs on tomato (Solanum lycopersicum) seedlings under suboptimal temperature stress have not yet been evaluated. We also do not know the most effective method of application of PGRs for various tomato cultivars. We studied the effects of three rates of exogenous ABA, Put, or EBR in limiting damage from suboptimal temperature stress on two tomato cultivars, Zhongshu6 (considered sensitive to suboptimal temperatures) and SANTIAM (considered tolerant to suboptimal temperatures). Results showed that application of these PGRs at appropriate concentrations could effectively reduce the decline in the net photosynthetic rate (P-n) and the chlorophyll (Chl) content in leaves caused by suboptimal temperature stress in both 'Zhongshu6' and 'SANTIAM' and could promote an increase in organic osmolyte (proline and soluble sugar) contents and root 2,3,5-triphenyltetrazolium chloride (TTC)-reducing activity for 'Zhongshu6'. However, these effects were inferior on 'SANTIAM'. For both cultivars, the best treatment concentrations are 1 MM ABA, 0.1 mm Put, or 0.02 mu M EBR. Results indicate that in tomato production, exogenous application of ABA, Put, or ERR at appropriate concentrations can effectively limit damage from suboptimal temperature stress.
学科主题	Horticulture ; HORTICULTURE
语种	英语
出版者	AMER SOC HORTICULTURAL SCIENCE
WOS记录号	WOS:000300862500021
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/101111]
专题	蔬菜花卉研究所_栽培与采后技术研究室
作者单位	Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Weijie,Bai, Jie,Yang, Xueyong,et al. Exogenous Application of Abscisic Acid, Putrescine, or 2,4-Epibrassinolide at Appropriate Concentrations Effectively Alleviate Damage to Tomato Seedlings from Suboptimal Temperature Stress[J]. HORTTECHNOLOGY,2012,22(1):137-144.
APA	Jiang, Weijie,Bai, Jie,Yang, Xueyong,Yu, Hongjun,&Liu, Yanpeng.(2012).Exogenous Application of Abscisic Acid, Putrescine, or 2,4-Epibrassinolide at Appropriate Concentrations Effectively Alleviate Damage to Tomato Seedlings from Suboptimal Temperature Stress.HORTTECHNOLOGY,22(1),137-144.
MLA	Jiang, Weijie,et al."Exogenous Application of Abscisic Acid, Putrescine, or 2,4-Epibrassinolide at Appropriate Concentrations Effectively Alleviate Damage to Tomato Seedlings from Suboptimal Temperature Stress".HORTTECHNOLOGY 22.1(2012):137-144.