Quantitative trait loci influencing grain protein content in tetraploid wheats

被引：69

作者：

Blanco, A ^{[1
]}

deGiovanni, C ^{[1
]}

Laddomada, B ^{[1
]}

Sciancalepore, A ^{[1
]}

Simeone, R ^{[1
]}

Devos, KM ^{[1
]}

Gale, MD ^{[1
]}

机构：

[1] CAMBRIDGE LAB, NORWICH NR4 7UJ, NORFOLK, ENGLAND

来源：

PLANT BREEDING | 1996年 / 115卷 / 05期

关键词：

Triticum turgidum var durum; restriction fragment length polymorphism (RFLP); mapping; quantitative trait loci (QTLs); protein; durum wheat;

D O I：

10.1111/j.1439-0523.1996.tb00925.x

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Seed storage protein content of durum wheat (Triticum turgidum var. durum) has an important effect on nutritional value and pasta-making characteristics. The objective of this study was to determine by association with genetic markers the number, chromosomal location, and magnitude of effect of quantitative trait loci (QTLs) controlling protein concentration in kernels. A set of 65 recombinant inbred lines (RIs) was developed by single seed descent from a cross between cultivated durum wheat cv. 'Messapia' (low protein content) and accession MG4343 of the wild tetraploid wheat var. dicoccoides (high protein content). This population was characterized for eight morphological, six storage protein, one isozyme and 124 RFLP loci. Field trials were conducted in one location in 1993 and two locations in 1994. QTLs were mapped by regression analysis on each marker locus for each location and for the average across environments. A total of six putative QTLs were located on chromosome arms 4BS, 5AL, 6AS, 6BS and 7BS. The number and size of QTLs detected varied across environments. The marker with the highest r(2) value per QTL in each environment and across environments was chosen for a multiple linear regression analysis, which explained 49.2-56.4% of the phenotypic variation for protein content. Only some of the markers were found to be negatively associated with plant grain yield and/or seed weight in one or two of the environments.

引用

页码：310 / 316

页数：7

共 60 条

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