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Pod and Seed Trait QTL Identification To Assist Breeding for Peanut Market Preferences
Year:
2020
Source of publication :
G3 (Bethesda, Md.)
Authors :
Hovav, Ran H.
;
.
Volume :
Co-Authors:

Carolina Chavarro  - University of Georgia.
Ye Chu - University of Georgia.
Corley Holbrook - USDA- Agricultural Research Service, Crop Genetics and Breeding Research Unit.
Thomas Isleib - North Carolina State University .
David Bertioli  - University of Georgia.
Christopher Butts - USDA- Agricultural Research Service, Peanut Research.

Marshall Lamb - USDA- Agricultural Research Service, Peanut Research.
Ronald Sorensen - USDA- Agricultural Research Service, Peanut Research.
Scott A Jackson - University of Georgia.
Peggy Ozias-Akins - University of Georgia.

Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

Although seed and pod traits are important for peanut breeding, little is known about the inheritance of these traits. A recombinant inbred line (RIL) population of 156 lines from a cross of Tifrunner x NC 3033 was genotyped with the Axiom_Arachis1 SNP array and SSRs to generate a genetic map composed of 1524 markers in 29 linkage groups (LG). The genetic positions of markers were compared with their physical positions on the peanut genome to confirm the validity of the linkage map and explore the distribution of recombination and potential chromosomal rearrangements. This YE traits that were phenotyped over three consecutive years for the purpose of developing trait-associated markers for breeding. Forty-nine QTL were identified in 14 LG for seed size index, kernel percentage, seed weight, pod weight, single-kernel, double-kernel, pod area and pod density. Twenty QTL demonstrated phenotypic variance explained (PVE) greater than 10% and eight more than 20%. Of note, seven of the eight major QTL for pod area, pod weight and seed weight (PVE >20% variance) were attributed to NC 3033 and located in a single linkage group, LG B06_1. In contrast, the most consistent QTL for kernel percentage were located on A07/B07 and derived from Tifrunner.

Note:
Related Files :
breeding
gene amplification
gene mapping
genetic linkage
inheritance
Seed
validity
Show More
Related Content
More details
DOI :
10.1534/g3.120.401147
Article number:
0
Affiliations:
Database:
PubMed
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
47913
Last updated date:
02/03/2022 17:27
Creation date:
21/05/2020 23:12
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Scientific Publication
Pod and Seed Trait QTL Identification To Assist Breeding for Peanut Market Preferences

Carolina Chavarro  - University of Georgia.
Ye Chu - University of Georgia.
Corley Holbrook - USDA- Agricultural Research Service, Crop Genetics and Breeding Research Unit.
Thomas Isleib - North Carolina State University .
David Bertioli  - University of Georgia.
Christopher Butts - USDA- Agricultural Research Service, Peanut Research.

Marshall Lamb - USDA- Agricultural Research Service, Peanut Research.
Ronald Sorensen - USDA- Agricultural Research Service, Peanut Research.
Scott A Jackson - University of Georgia.
Peggy Ozias-Akins - University of Georgia.

Pod and Seed Trait QTL Identification To Assist Breeding for Peanut Market Preferences

Although seed and pod traits are important for peanut breeding, little is known about the inheritance of these traits. A recombinant inbred line (RIL) population of 156 lines from a cross of Tifrunner x NC 3033 was genotyped with the Axiom_Arachis1 SNP array and SSRs to generate a genetic map composed of 1524 markers in 29 linkage groups (LG). The genetic positions of markers were compared with their physical positions on the peanut genome to confirm the validity of the linkage map and explore the distribution of recombination and potential chromosomal rearrangements. This YE traits that were phenotyped over three consecutive years for the purpose of developing trait-associated markers for breeding. Forty-nine QTL were identified in 14 LG for seed size index, kernel percentage, seed weight, pod weight, single-kernel, double-kernel, pod area and pod density. Twenty QTL demonstrated phenotypic variance explained (PVE) greater than 10% and eight more than 20%. Of note, seven of the eight major QTL for pod area, pod weight and seed weight (PVE >20% variance) were attributed to NC 3033 and located in a single linkage group, LG B06_1. In contrast, the most consistent QTL for kernel percentage were located on A07/B07 and derived from Tifrunner.

Scientific Publication
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