Factors Affecting Regeneration of Tomato Cotyledons  

Wei Zhang , Leiping Hou , Hui Zhao , Meilan Li
College of Horticulture, Shanxi Agricultural University, Taigu, 030801, P.R. China
Author    Correspondence author
Bioscience Methods, 2012, Vol. 3, No. 4   doi: 10.5376/bm.2012.03.0004
Received: 02 Feb., 2012    Accepted: 25 May, 2012    Published: 08 Jun., 2012
© 2012 BioPublisher Publishing Platform
This article was first published in Molecular Plant Breeding (2010, 8(5): 913-919) in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:

Zhang et al., 2012, Factors Affecting Regeneration of Tomato Cotyledons, Bioscience Methods, Vol.3, No.4 27-33 (doi: 10.5376/bm.2012.03.0004)

Abstract

In this research, we employed the tomato cultivar named Zhongshu Si Hao as research material to study the influences on the regeneration of adventitious buds under the different conditions with hormone combinations, various explants, different parts of cotyledons and cotyledon inoculatingmethods; we also screened the best method for seed surface disinfection and the most appropriate medium for the rooting of adventitious buds. The results showed that the best procedures for surface disinfection of tomato seeds would be as follows: firstly, immersing the seeds in 70% ethanol for 30 second, then rinsing them in 20% NaClO with tween-20 for 20 min. The most ideal explant for inducing buds is the middle part of the cotyledon, followed by the stem and the leaf. the best medium formula for cotyledon regeneration is MS+ZT 2 mg/L+IAA 0.1 mg/L, and placing the cotyledon upside down is better to induce the adventitious buds than that placing upside. The best medium for rooting of adventitious buds is 1/2MS+IAA 0.3 mg/L. This research would lay a foundation establish transformation system of tomato in our future research.

Keywords
Tomato; Cotyledon; Hormone; Bud induction
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