期刊
ANNALS OF BOTANY
卷 93, 期 1, 页码 53-60出版社
OXFORD UNIV PRESS
DOI: 10.1093/aob/mch014
关键词
catalase; graft; Lycopersicon esculentum; peroxidase; tomato
Background and Aims The use of grafted plants in vegetable crop production is now being expanded greatly. However, few data are available on the formation of graft unions in vegetables. In this work, the structural development of the graft union formation in tomato plants is studied, together with the possible relationship with activities of peroxidases and catalases. Methods Tomato (Lycopersicon esculentum Mill.) seedlings of cultivar Fanny were grafted on the rootstock of cultivar AR-9704 using the 'tongue approach grafting' method, and were grown in a crop chamber. A study of the structural development of the graft union and the involvement of peroxidases and catalases in the process of graft formation was carried out during the first stages of the graft union (4, 8 and 15 d after grafting). Key Results Observation of the structure of the graft union showed formation of xylem and phloem vessels through the graft union 8 d after grafting. In addition, root hydraulic conductance, L-0, indicate that the graft union is fully functional 8 d after grafting, which coincided with an increase of peroxidase and catalase activities. Conclusions These results suggest that increased peroxidase and catalase activities might be implicated in graft development in tomato plants. (C) 2004 Annals of Botany Company.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据