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Home > Archive>Volume 22, Issue 6, 2021 >1644-1650. DOI:10.13430/j.cnki.jpgr.20210425002
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Genome Wide Association Study of Anaerobic Germination Tolerance in Seeds of Rice Accessions
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1College of Agriculture,Hunan Agricultural University,Changsha 410128;2 Hunan Rice Research Institute, Hunan Academy of Agricultural Science/Key Laboratory of Indica Rice Genetics and Breeding in the Middle and Lower Reaches of Yangtze River Valley,Ministry of Agriculture,Changsha 410125

Fund Project:

Special Project for Modern Agricultural Industrial Technology System of China（CARS-01-14）

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    Abstract:

    The objective of the study is to dissect genetic basis and identify QTL related to Anaerobic germination related traits in rice, and to detect the elite rice lines carrying favorable alleles, therefore providing excellent germplasm for molecular marker-assisted (MAS）breeding. The seeds of 318 rice lines were germinated for measuring coleoptile length under normal and anaerobic conditions. QTL associated with anaerobic germination (AG）tolerance was determined by GWAS and candidate genes were analyzed. The broad variation of AG tolerance was observed among rice accessions ranged from -0.923 to 3.069, with an average of -0.238, a median of -0.342. A total of 27 QTL revealed by 83 SNPs were detected associating with AG tolerance. The QTL locus qAG4-2 was selected for analyzed and 20 candidate genes in the target interval were annotated. Among them, three genes were detected with elevated transcripts induced by anaerobic stress. The excellent germplasm resources and the QTL loci associating with anaerobic germination were valuable in rice breeding.

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History
  • Received:April 25,2021
  • Revised:August 09,2021
  • Adopted:August 18,2021
  • Online: November 04,2021
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