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Identification of Candidate Microsatellite Markers Associated with Agronomic Traits in Rice (<i>Oryza sativa</i> L.)

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Last updated: 01 Jan 2025

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Abstract

ADIVERSE collection of Egyptian and exotic rice genotypes, were evaluated for agronomic traits.  Subsequently in order to assess the allele diversity of quantitative trait loci (QTLs) attributed to agronomic traits. The genotypes were characterized using a set of 23 microsatellite markers. In total, 24 significant marker­­-trait associations QTLswere identified; 2 for heading date, 10 for plant height, 2 for panicle length, 4 for number of panicles per plant, 1 for number of filled grains per panicle, 1 for 1000-grain weight and 4 for grain yield per plant. More of theseQTLswere located on chromosomes 2 and 7. Association analysis of SSR markers showed 4 markersRM6, RM118, RM151 and RM307had a significant association with most of the agronomic traits. Detection of QTLs for agronomic traits at different chromosomes indicated that these characters are controlled by multiple loci. Higher R2 values were obtained for most traits and ranged from -0.366* to 0.695** for grain yield per plant and plant height, respectively. Genetic analysis identified the best rice microsatellite markers attributed to agronomic traits and they can be informative for improvement of agronomic traits through marker-assisted selection. Breeders can use this information to design crosses that assemble new potentially durable combinations of genes/QTLsto improve rice genotypes.

DOI

10.21608/ejbo.2016.345

Keywords

agronomic traits, Allele size, Marker-trait associations, Microsatellite, <i>Oryza sativa</i>, <i> QTLs</i>, rice

Volume

56

Article Issue

1

Related Issue

117

Issue Date

2016-09-01

Receive Date

2015-01-20

Publish Date

2016-09-01

Page Start

67

Page End

80

Print ISSN

0375-9237

Online ISSN

2357-0350

Link

https://ejbo.journals.ekb.eg/article_345.html

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https://ejbo.journals.ekb.eg/service?article_code=345

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5

Type

Original Article

Type Code

111

Publication Type

Journal

Publication Title

Egyptian Journal of Botany

Publication Link

https://ejbo.journals.ekb.eg/

MainTitle

Identification of Candidate Microsatellite Markers Associated with Agronomic Traits in Rice (<i>Oryza sativa</i> L.)

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Type

Article

Created At

22 Jan 2023