Molecular mapping of quantitative trait loci associated with seedling tolerance to salt stress in rice (Oryza sativa L.)

被引：40

作者：

Prasad, SR ^{[1
]}

Bagali, PG ^{[1
]}

Hittalmani, S ^{[1
]}

Shashidhar, HE ^{[1
]}

机构：

[1] Univ Agr Sci, Dept Genet & Plant Breeding, Marker Assisted Select Lab, GKVK, Bangalore 560065, Karnataka, India

来源：

CURRENT SCIENCE | 2000年 / 78卷 / 02期

关键词：

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 [理学]; 0710 [生物学]; 09 [农学];

摘要：

Quantitative trait loci (QTL) controlling various rice seedling traits conferring salt tolerance were mapped on the molecular map of rice, generated by using a doubled haploid population derived from the cross between IR64 and Azucena, Seven QTL were identified [threshold LOD (log of odds ratio) greater than or equal to 2.00] for seedling traits under salt stress, i.e. two for seed germination (%), one for seedling root length (cm), three for seedling dry matter (mg) and one for seedling vigour. Among the seven QTL four were located on chromosome 6. A QTL for root length on chromosome 6 was flanked by restriction fragment length polymorphism (RFLP) markers RG162-RG653, exhibited a very high phenotypic variance of 18.9% and a peak LOD score of 2.852. Homozygous genotypes containing quantitative genes tolerant to salt stress were identified, The markers tightly linked to salt tolerance can be used in marker-assisted selection after testing their stability and reliability.

引用

页码：162 / 164

页数：3

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