Quantitative trait loci for leaf length in perennial ryegrass (Lolium perenne L.)

被引：29

作者：

Barre, P. ^{[1
]}

Moreau, L. ^{[2
]}

Mi, F. ^{[3
]}

Turner, L. ^{[4
]}

Gastal, F. ^{[1
]}

Julier, B. ^{[1
]}

Ghesquiere, M. ^{[1
]}

机构：

[1] INRA, Unite Rech Pluridisciplinaire Prairies & Plantes, UR4, F-86600 Lusignan, France

[2] INRA, Unite Mixte Rech Genet Vegetale, Gif Sur Yvette, France

[3] Inner Mongolia Agr Univ, Coll Agron, Hohhot, Inner Mongolia, Peoples R China

[4] Aberystwyth Univ, Inst Biol Environm & Rural Sci, Aberystwyth, Ceredigion, Wales

来源：

GRASS AND FORAGE SCIENCE | 2009年 / 64卷 / 03期

关键词：

genetic basis; morphogenesis; Lolium perenne; forage; grass; SHORT-TERM INTAKE; CANOPY STRUCTURE; GENETIC-VARIABILITY; SWARD HEIGHT; QTL ANALYSIS; SSR MARKERS; LINKAGE MAP; PRODUCTIVITY; COMPONENTS; CHARACTERS;

D O I：

10.1111/j.1365-2494.2009.00696.x

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Leaf length is an important trait for forage grasses. Molecular marker development offers the opportunity to identify Quantitative Trait Loci (QTLs) and to begin to dissect the genetic regulation of complex traits. The objective of this study was to look for QTLs for leaf length and related traits (plant height, lamina and sheath lengths, leaf elongation rate and leaf elongation duration) in the progeny of a cross between two genotypes of Lolium perenne L. with contrasting leaf length. Measurements were performed in a plant nursery in autumn and spring, and in a heated greenhouse in winter. A high level of variability and heritability was observed for all traits. Lamina lengths at different dates were moderately but significantly correlated. For all traits, QTLs were found and explained between 0 center dot 08 and 0 center dot 44 of phenotypic variance. Although different leaf length QTLs were found at different dates, linkage groups two, four and seven were particularly important.

引用

页码：310 / 321

页数：12

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