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Genome-wide association study (GWAS) of major QTLs for bunch and oil yield related traits in Elaeis guineensis L.

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Title Genome-wide association study (GWAS) of major QTLs for bunch and oil yield related traits in Elaeis guineensis L.
 
Creator Sandeep Shil
 
Subject Elaeis guineensis,Genome-wide association study,Oil to bunch ratio,Bunch weight,Microsatellite markers
 
Description Not Available
Oil palm (Elaeis guineensis Jacq.) is a long breeding cycle perennial crop with a genome size of 1.8 Gb. This is the first report of GWAS on large number of 310 African germplasm using 400 SSR markers till date. Highly significant correlation was found between leaf area (LA) and rachis length (RL) (0.75) followed by bunch weight (BW) and bunch index (BI) (0.65), whereas negative correlation was observed between bunch number (BN) and average bunch weight (ABW). First two principal component analysis (PCA) together explained maximum amount of variation (84.5 percent). The PCA1 revealed that group 2 (Guinea Bissau and Cameroon) and group 4 (Zambia and Cameroon) genotypes are best suitable for BN, BI and BW traits. GWAS of six bunch yield and seven bunch oil yield traits with SSRs resulted in the identification 43 significant quantitative trait loci (QTLs) by mixed linear model (MLM) approach. Seven SSR loci were found to be linked to oil to dry mesocarp (ODM) on chromosomes 1,4,7,10,12 and 15. The SSR locus mEgCIR1753 for ODM was significantly linked at a p of less than equal to 0.05 which explained 34.6 percent of phenotypic variance. The important parameters like ODM, OWM and OB were located on 4, 10, 11 and 15 chromosomes. The leaf area and ODM were associated with candidate genes representing of low-temperature-induced 65?kDa proteins. The identified markers can be effectively used for marker assisted selection of high yielding oil palm genotypes
 
Date 2021-04-28T06:20:11Z
2021-04-28T06:20:11Z
2021-1-1
 
Type Research Paper
 
Identifier Babu, K., Mathur, R.K., Venu, M.V.B., Shil, S., Ravichandran, G., Anita, P. and Bhagya, H.P., 2021. Genome-wide association study (GWAS) of major QTLs for bunch and oil yield related traits in Elaeis guineensis L. Plant Science, 305, p.110810.
Not Available
0168-9452
http://krishi.icar.gov.in/jspui/handle/123456789/46806
 
Language English
 
Publisher Not Available