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http://dx.doi.org/10.5660/WTS.2013.2.1.015

Phenotype Comparison between Herbicide Tolerant Transgenic Rice and Weedy Rice  

Go, Eun Mi (Bio-Evaluation Center, KRIBB)
An, Joo Hee (Bio-Evaluation Center, KRIBB)
Nam, Ki Jung (Bio-Evaluation Center, KRIBB)
Nam, Kyong-Hee (Bio-Evaluation Center, KRIBB)
Park, Kee Woong (Department of Crop Science, Chungnam National University)
Back, Kyoungwhan (Division of Applied Bioscience and Biotechnology, Chonnam National University)
Kim, Chang-Gi (Bio-Evaluation Center, KRIBB)
Publication Information
Weed & Turfgrass Science / v.2, no.1, 2013 , pp. 15-22 More about this Journal
Abstract
The phenotypic traits of herbicide-tolerant transgenic rice were compared with those of wild type (Dongjin) as well as two accessions (Hwaseong-aengmi 1 and Gwangyang-aengmi 12) of weedy rice. This study was conducted to investigate whether unintentional alterations in phenotypic characteristics occurred in the transgenic rice and whether the altered traits were similar to those in the two weedy rices. All qualitative traits studied were similar in the transgenic or wild-type rice. On the other hand, awn presence, flag leaf attitude and grain color differed considerably between herbicide-tolerant transgenic rice and weedy rice. As for quantitative traits, plant height, the number of tillers per plant and shoot dry weight were significantly greater for weedy rice than transgenic or wild-type rice. Grain weight per plant and 1000-grain weight of transgenic (or wild-type) rice were significantly greater than those of weedy rice. Transgenic rice shattered less than the other rices. Amylose and protein contents in embryos of transgenic rice were significantly different from those of weedy rice. The potential for weediness of the transgenic rice may be assessed using phenotype comparison between transgenic and weedy rice as shown in this study.
Keywords
Herbicide; Phenotype; Transgenic rice; Weediness; Weedy rice;
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