학술논문
Mapping of QTLs for Yield Traits Using an Advanced Backcross Population from a Cross between Oryza sativa and O. glaberrima
이용수 13
- 영문명
- 발행기관
- 한국육종학회
- 저자명
- Jung Pil Suh Sang Nag Ahn Young Chan Cho Kyong Ho Kang Im Soo Choi Yeon Gyu Kim Hak Soo Suh Hung Goo Hwang
- 간행물 정보
- 『한국육종학회지』Vol.37 No.4, 214~220쪽, 전체 7쪽
- 주제분류
- 농수해양 > 기타농수해양
- 파일형태
- 발행일자
- 2005.08.30
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국문 초록
영문 초록
An interspecific BC₃F₂ population (Milyang 23/O. glaberrima//3*Milyang 23) consisting of 141 lines was evaluated for 8 traits associated with yield. Oryza glaberrima (IRGC #103544) was phenotypically inferior to all of the traits examined in this study. However, several transgressive segregants outperformed Milyang 23 with respect to 1,000-grain weight, spikelets per panicle and grain yield. A genetic linkage map generated for this population consisted of 124 SSR markers with an average interval length of 13.1 cM. The percentage of O. glaberrima genome, which was calculated on the number of the exotic gene introgressions contained in the 141 BC₃F₂ lines, ranged from 3.9 to 25.4% with a mean of 12.8%. Of the 37 QTLs associated with yield and yield components, 24 alleles from O. glaberrima were favorable. However, eight QTLs were significantly associated with yield and five alleles of O. glaberrima were located on chromosomes 2, 3, 4, 6 and 8 which is attributed to increasing yield ranging from 1.5 to 2.2 tons/ha. Exploitation of the genetic potential of exotic species using molecular markers might provide a new opportunity to improve yield and quantitative traits in rice breeding program.
목차
Abstract
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DICUSSION
LITERATURES CITED
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