Mapping of quantitative trait loci for plant height and heading date in two inter-subspecific crosses of rice and comparison across Oryza genus
Other Title
水稻株高和抽穗期數量性狀基因座於兩個亞種雜交族群之圖譜分析及稻屬間之比較
Journal
Botanical Studies
Journal Volume
52
Journal Issue
1
Pages
1-14
Date Issued
2011-01
Date
2011-01
Author(s)
Yann-Rong Lin
Shao-Chun Wu
Su-Er Chen
Tung-Hai Tseng
Cheng-Sheng Chen
Su-Chen Kuo
Hong-Pang Wu
Yue-Ie C. Hsing
林彥蓉
吳少鈞
陳素娥
曾東海
陳正昇
郭素真
鄔宏潘
邢禹依
Abstract
Two inter-subspecific segregating populations were constructed to map quantitative trait loci (QTLs) for plant height (PH) and heading date (HD) in rice. A total of 99 and 95 polymorphic SSR and STS markers were used to establish linkage maps in japonica TK8 x indica IR1545-339 and japonica Nipponbare x IR1545-339, respectively. By employing composite interval mapping verified by single point analysis, ten PH and seven HD QTLs were located on seven and six chromosomes, respectively; only Qph1.2 and Qhd3 were common in the two populations. The phenotypic variance explained (PVE) by major PH and HD QTLs was 22.07% (Qph6.1) and 12.98% (Qph6.2), and 35.74% (Qhd3) and 15.54% (Qhd3), for TK8/IR1545-339 and Nipponbare/IR1545-339, respectively. Comparative genetic analysis of QTL intervals on rice pseudomolecules showing the convergence of QTLs affecting PH and HD across the Oryza genus revealed all QTLs uncovered in the two populations possibly allelic to QTLs previously published. By comparative mapping and candidate gene approach, we specified three PH, Qph1.2, Qph4, and Qph6.1, and one HD QTL, Qhd10, without high-resolution mapping, and the reality of QTLs identified by interval mapping were discussed herein.
Subjects
Comparative genetics
Candidate gene approach
Heading date
Plant height
Quantitative trait locus (QTL)
Rice
比較遺傳學
候選基因策略
抽穗期
株高
數量性狀基因座
水稻
Publisher
中央研究院植物暨微生物學研究所
Type
journal article
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