Mapping quantitative trait loci controlling agronomic traits in the spring wheat cross RL4452 x 'AC Domain'

被引：196

作者：

McCartney, CA ^{[1
]}

Somers, DJ ^{[1
]}

Humphreys, DG ^{[1
]}

Lukow, O ^{[1
]}

Ames, N ^{[1
]}

Noll, J ^{[1
]}

Cloutier, S ^{[1
]}

McCallum, BD ^{[1
]}

机构：

[1] Agr & Agri Food Canada, Cereal Res Ctr, Winnipeg, MB R3T 2M9, Canada

来源：

GENOME | 2005年 / 48卷 / 05期

关键词：

height; lodging; mapping; maturity; microsatellite markers; test weight; 1000-grain weight; Triticum aestivum; wheat; yield;

D O I：

10.1139/g05-055

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Relatively little is known about the genetic control of agronomic traits in common wheat (Triticum aestivum L.) compared with traits that follow Mendelian segregation patterns. A doubled-haploid population was generated from the cross RL4452 x 'AC Domain' to study the inheritance of the agronomic traits: plant height, time to maturity, lodging, grain yield, test weight, and 1000-grain weight. This cross includes the genetics of 2 western Canadian wheat marketing classes. Composite interval mapping was conducted with a microsatellite linkage map, incorporating 369 loci, and phenotypic data from multiple Manitoba environments. The plant height quantitative trait loci (QTLs), QHt.crc-4B and QHt.crc-4D, mapped to the expected locations of Rht-B1 and Rht-D1. These QTLs were responsible for most of the variation in plant height and were associated with other agronomic traits. An additional 25 agronomic QTLs were detected in the RL4452 x 'AC Domain' population beyond those associated with QHt.crc-4B and QHt.crc4D. 'AC Domain' contributed 4 alleles for early maturity, including a major time to maturity QTL on 7D. RL4452 contributed 2 major alleles for increased grain yield at QY1d.crc-2B and QY1d.crc-4A, which are potential targets for marker-assisted selection. A key test weight QTL was detected on 3B and prominent 1000-grain weight QTLs were identified on 3D and 4A.

引用

页码：870 / 883

页数：14

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