Quantitative trait loci (QTLs) detection for plant regeneration ability from seed culture in rice (Oryza sativa L.)

• 발행기관: (사)한국식물생명공학회
• 저자명: Jae Keun Sohn Mei Han Liu
• 간행물 정보: 『Journal of Plant Biotechnology』39권 3호, 169~174쪽, 전체 6쪽
• 주제분류: 농수해양 > 기타농수해양
• 파일형태: PDF
• 발행일자: 2012.09.30

영문 초록

Quantitative trait loci (QTLs), which were related to the ability of callus induction and plant regeneration in seed culture of rice, were analyzed using a mapping population from a cross between the rice cultivars ``Samgang`` (tongil type) and ``Nagdong`` (japonica). A tongil type rice cultivar, ``Samgang`` showed lower frequency (20%) of plant regeneration than that (35%) of japonica rice, ``Nagdong``. Transgressive segregations were observed for the ability of callus induction and plant regeneration from the seedderived calli of 58 doubled haploid (DH) lines. The ability of plant regeneration of 58 doubled haploid lines showed a continuous distribution with comparatively wide range (10.0 to 66.7%) of variation. Composite interval mapping analysis was used to identify the QTLs controlling callus induction and plant regeneration ability. Four significant QTLs, qCWS6, qCWS8, qCWS9 and qCWS11, associated with callus weight per seed were detected on chromosomes 6, 8, 9, and 11 with LOD values of 3.30, 2.60, 2.70 and 2.43, explaining 36% of the total phenotypic variation. Three significant QTLs, qPR1, qPR6, and qPR11, for the ability of plant regeneration were located on chromosome 1, 6, and 11 at LOD score of 2.25, 2.15 and 2.55, accounting for 24 % of the total phenotypic variation. The present study should be useful for improving the efficiency of plant regeneration in tissue culture of indica rice by means of marker-assisted selection.