Research Report

Analysis for Rice Submergence Seedling of Japonica Varieties in Jiang-Huai Region  

Ming Chi , Yan Liu , Yungao Xing , Zhiguang Sun , Bo Xu , Baiguan Lu , Zhaowei Fang , Tingmu Chen , Bo Yang , Jinbo Liu , Jian Li , Zhaoqiang Song , Baoxiang Wang , Dayong Xu
Lianyungang Agriculture Science Institute, Jiangsu Collaborative Innovation Center for Modern Corp Production, Lianyungang, 222006
Author    Correspondence author
Molecular Plant Breeding, 2020, Vol. 11, No. 26   
Received: 11 Oct., 2020    Accepted: 14 Oct., 2020    Published: 14 Oct., 2020
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This article was first published in Molecular Plant Breeding ( ISSN1672-416X，CN46-1068/S) 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.
Abstract
The seed tolerance to anoxia were analyzed in vitro germination tolerance in tubes and under soil-media in order to simulate the field environment .Coleoptile length of seedlings under anoxia situation for 7 days as survey indicator among 95 rice varieties with 4 ecological types. Results show that: (1) the coleoptile length among different rice varieties had rich variatio. (2) the germination of rice seeds in the two kinds of flooding methods in vitro and soil medium is very different. The most significant inhibition of seed scabbard growth under soil-media is the low temperature environment of soil medium after flooding to seed germination. (3) Tthe rice varieties of Lianjing 9, Yanjing 7, Lianjing 7, Lianjing 15 had high tolerance to low temperature and anoxia through two methods,which provide the direct seedling cultivars for the local rice area.
Keywords
Jianghuai rice area; Japonica rice; Submergence; Screening method
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