globalchange  > 气候减缓与适应
DOI: 10.1270/jsbbs.18068
WOS记录号: WOS:000465361100018
论文题名:
Identification and mapping of QTLs associated with drought tolerance traits in rice by a cross between Super Basmati and IR55419-04
作者: Sabar, Muhammad1; Shabir, Ghulam2; Shah, Shahid Masood3; Aslam, Kashif2; Naveed, Shahzad Amir4; Arif, Muhammad5
通讯作者: Shah, Shahid Masood
刊名: BREEDING SCIENCE
ISSN: 1344-7610
EISSN: 1347-3735
出版年: 2019
卷: 69, 期:1, 页码:169-178
语种: 英语
英文关键词: rice ; water uptake ; mapping population ; SSR markers ; composite interval mapping
WOS关键词: ROOT MORPHOLOGICAL TRAITS ; ORYZA-SATIVA L. ; WATER-UPTAKE ; UPLAND RICE ; GENETIC-ANALYSIS ; GRAIN-YIELD ; POPULATION ; STAGE ; LOCI ; RESISTANCE
WOS学科分类: Agronomy ; Plant Sciences
WOS研究方向: Agriculture ; Plant Sciences
英文摘要:

Water stress, in a climate change scenario is one of the major threats for sustainable rice productivity. Combining drought resistance with yield and desirable economic traits is the most promising solution for the researchers. Although several studies resulted in the identification of QTLs for drought resistance in rice, but none of them serve as a milestone. Therefore, there is always a quest to find the new QTLs. The present investigation was carried out to map QTLs involved in drought resistance and yield related parameter in a cross of IR55419-04 and Super Basmati. An F-2 population of 418 individuals was used as the mapping population. The raised nursery was transplanted in lyzimeters. Two extreme sets of tolerant (23 Nos.) and sensitive (23 Nos.) individuals were selected based on total water uptake under water stress conditions. Two hundred thirty microsatellite markers staggered on the whole genome were used for identifying polymorphic markers between the two parents. The selected 73 polymorphic microsatellites were used to genotype individuals and were scattered on a distance of 1735 cM on all 12 linkage groups. QTL analysis was performed by using the WinQTL Cartographer 2.5 V. A total of 21 QTLs were detected using composite interval mapping. The QTLs relating to drought tolerance at the vegetative stage were found on chromosome 1. Novel genomic regions were detected in the marker interval RM520-RM143 and RM168-RM520. The region has a significant QTL qTWU3.1 for total water uptake. Root morphological trait QTLs were found on chromosome 3. QTLs responsible for additive effects were due to the alleles of the IR55419-04. These novel QTLs can be used for marker assisted breeding to develop new drought-tolerant rice varieties and fine mapping can be used to explore the functional relationship between the QTLs and phenotypic traits.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/126612
Appears in Collections:气候减缓与适应

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作者单位: 1.Rice Res Inst, Lahore, Pakistan
2.Bahauddin Zakariya Univ, Inst Mol Biol & Biotechnol, Multan, Pakistan
3.COMSATS Univ Islamabad, Dept Environm Sci, Abbottabad Campus, Abbottabad 22010, Pakistan
4.Chinese Acad Agr Sci, Inst Crop Sci, Beijing, Peoples R China
5.NIBGE, Faisalabad 38000, Pakistan

Recommended Citation:
Sabar, Muhammad,Shabir, Ghulam,Shah, Shahid Masood,et al. Identification and mapping of QTLs associated with drought tolerance traits in rice by a cross between Super Basmati and IR55419-04[J]. BREEDING SCIENCE,2019-01-01,69(1):169-178
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