We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Identification of quantitative trait loci underlying milling quality of rice ( Oryza sativa) grains.
- Authors
Li, Z. F.; Wan, J. M.; Xia, J. F.; Zhai, H. Q.; Ikehashi, H.
- Abstract
Milling quality of rice grains is important to both producers and consumers. In this study, quantitative trait loci (QTLs) controlling brown rice rate (BR), milled rice recovery (MR) and head rice recovery (HR) were analysed by composite interval mapping over 2 years using 98 backcross inbred lines (BILs). A total of 12 QTLs for the three traits were detected, of which five were for BR, four for MR and three for HR. The proportion of phenotypic variation explained by individual QTLs ranged from 7.5 to 19.9%, and additive effects contributed by a single QTL accounted for 0.46 to 2.34% of the variation. QTL-by-environment interactions were observed by comparing QTL mapping of the same population grown in two consecutive years. Three of five QTLs for BR and two of four QTLs for MR were detected in 2 years, and all three QTLs for HR were detected in 1 year only. BR was significantly correlated with MR, and all four QTLs of MR were located in the same regions as those of BR. This indicated that QTLs for highly correlated traits could often be detected in the same interval.
- Subjects
BROWN rice; GRAIN milling; CULTIVARS; PLANT genetic transformation; FUNGI in agriculture; PLANT molecular genetics; ENVIRONMENTAL engineering
- Publication
Plant Breeding, 2004, Vol 123, Issue 3, p229
- ISSN
0179-9541
- Publication type
Article
- DOI
10.1111/j.1439-0523.2004.00977.x