Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/38008
標題: Cold water treatment promotes ethylene production and dwarfing in tomato seedlings
作者: Huang, J.Y.
林金和
Lin, C.H.
關鍵字: tomato
seedlings
cold water
ethylene
ethephon
1-MCP
lycopersicon-esculentum mill
grown tomato
paclobutrazol
inhibition
responses
stress
yield
stem
期刊/報告no:: Plant Physiology and Biochemistry, Volume 41, Issue 3, Page(s) 283-288.
摘要: Tomato (Lycopersicon esculentum Mill.) seedlings that were treated with cold water (5 degreesC) once a day, starting 14 d after sowing, were only 80% as tall as the control (25 degreesC water) plants after 21 d. The dwarfing effect was most conspicuous on the first internode length. Hypocotyl diameter and shoot fresh and dry weights were not significantly affected. A single cold water treatment induced ethylene production that peaked 60-90 min after treatment and then declined. Shoot segments excised above the first node had the highest rate of ethylene production. A single cold water treatment on day 21 resulted in an ethylene production rate of 19.6 nl h(-1) g(-1), compared to 3.4 nl h(-1) g(-1) for control seedlings (an increase of 5.8 times). Daily cold water treatment of 14-d-old seedlings for 2 weeks was equivalent to pretreatment with 3 mg l(-1) of ethephon. Pretreatment of seedlings with 1 nl l(-1) 1-methylcyclopropane (1 -MCP) was sufficient to block the ethylene action induced by the cold water treatment. It is inferred that cold water-induced dwarfism of tomato seedlings is mediated through ethylene action. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
URI: http://hdl.handle.net/11455/38008
ISSN: 0981-9428
文章連結: http://dx.doi.org/10.1016/s0981-9428(03)00020-2
Appears in Collections:生命科學系所

文件中的檔案:

取得全文請前往華藝線上圖書館



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.