Current Research on Agriculture and Life Sciences
- Volume 29
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- Pages.1-10
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- 2011
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- 2287-271X(pISSN)
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- 2288-0356(eISSN)
Grain properties of low amylose endosperm induced by T-DNA insertion in Rice(Oryza sativa L.)
벼에서 T-DNA가 삽입된 저아밀로스 배유의 미립특성
- Park, Se-Ug (College of Agriculture and Life Sciences, Kyungpook National University) ;
- Lee, Hyun-Suk (College of Agriculture and Life Sciences, Kyungpook National University) ;
- Sohn, Jae-Keun (College of Agriculture and Life Sciences, Kyungpook National University)
- Received : 2011.11.30
- Accepted : 2011.12.20
- Published : 2011.12.31
Abstract
This study was conducted to determine the agronomic characteristics of low amylose lines which were derived from induced mutants by T-DNA insertion. The agronomic and physicochemical properties of the low amylose mutants were analyzed and compared with a donor cultivar 'Dongjin' and a low amylose cultivar 'Baekjinju'. The heading date of the low amylose mutants was similar to the donor cultivar 'Dongjin' and yield index of the mutants was 78~92% compared with 'Dongjin'. The amylose content of four mutants in brown rice was ranged from 16.1 to 16.7%. Among low amylose mutants, 'P50-4-4-5' was lower 3.6%(13.3%) than those of 'Dongjin'(16.9%) in amylose content of milled rice. The grain length of 'P50-4-4-5' was similar to the donor cultivar, however, thousand grain weight(18.9g) was lighter than those of 'Dongjin'. The score of alkali digestion in brown rice of 'P50-4-4-5'(5.5) was lower than that of 'Dongjin'(6.8) and similar to 'Baekjinju'(5.8). The gel consistency of 'P50-4-4-5'(84mm) in milled rice exhibited that was longer than 'Dongjin'(76mm) and 'Baekjinju'(81mm). The result of eating quality showed that 'P50-4-4-5'(78.8) was higher than those of 'Dongjin'(60.3) and 'Baekjinju'(67.2). Thus our data suggest that 'P50-4-4-5' will facilitate the development of a new cultivar with low amylose rice.