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Identification of genomic regions associated with the yield and related traits in pigeonpea (Cajanus cajan L. Millsp.)

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Relation http://oar.icrisat.org/10712/
 
Title Identification of genomic regions associated with the yield and related traits in pigeonpea (Cajanus cajan L. Millsp.)
 
Creator Kaoneka, S R
Saxena, R K
Singh, V K
Sameer Kumar, C V
Shimelis, H A
Varshney, R K
 
Subject Pigeonpea
Genetics and Genomics
 
Description Pigeonpea [Cajanus cajan (L) Millsp.] is an important multi-use
shrub legume of the tropics, sub-tropics and warmer regions of
the world, growing between 30°N and 35°S latitude. The goal
of this study was to identify genomic regions associated with
yield and related traits in three newly developed F2 mapping
populations of pigeonpea; AL 201 × ICPL 20325, ICP 5529 ×
ICP 7035 and ICP 8863 × ICPL 87119. Genotyping by Sequencing
(GBS) platform was used for genetic analysis and linkage
analysis was performed using JoinMap version 4. Quantitative
Trait Linkage (QTL) analysis of eight yield and yield–related
traits were performed using single marker analysis (SMA)
employing composite interval (CIM) using stepwise regression
linear model. A total of 42 QTLs were detected, with 5
in AL 201 × ICPL 20325, 7 in ICP 5529 × ICP 7035 and 30 in
ICP 8863 × ICPL 87119. Individual QTLs ranged from 1-4 per
trait and the phenotypic value explained (PVE%) ranged between
10.35 -16.27% in AL 201× ICPL 20325,10.44 -17.9 in ICP
5529 × ICP7035 and 10.71-89.12% in ICP 8863 × ICPL 87119.
The detected QTLs were co-localized within the same genomic
regions, indicating the presence of pleiotropic effect or close
genetic linkage. For further fine mapping and use in marker assisted
transfer, validation for the accuracy and consistency of
the identified QTLs in several, independent and diverse mapping
populations transfer is crucial.
 
Date 2017-02
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/10712/1/Abs%20247.pdf
Kaoneka, S R and Saxena, R K and Singh, V K and Sameer Kumar, C V and Shimelis, H A and Varshney, R K (2017) Identification of genomic regions associated with the yield and related traits in pigeonpea (Cajanus cajan L. Millsp.). In: InterDrought-V, February 21-25, 2017, Hyderabad, India.