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Identification of genes and genomic segments for cleistogamy in Pigeonpea(Cajanus cajan L.)

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Relation http://oar.icrisat.org/10317/
 
Title Identification of genes and genomic segments for cleistogamy in Pigeonpea(Cajanus cajan L.)
 
Creator Yadav, P
Saxena, R K
Kandalkar, V S
Sameer Kumar, C V
Varshney, R K
 
Subject Pigeonpea
Genetics and Genomics
 
Description Pigeonpea [Cajanus cajan (L.) Millsp.] is one of the major grain
legume crops of the world predominantly grown in semi-arid
tropics and sub-tropical regions. Pigeonpea has open or
semi-cleistogamous flowers that promote natural out crossing.
However, its open pollination behavior causes genetic deterioration
in purity of seeds in varieties. In this direction introgression
of cleistogamy or self-pollination behavior in pure line varieties
can be a genetic tool to maintain purity of elite lines. In pigeonpea
a mutant line ICPL 99050 has been identified as a cleistogamous
line. However the cleistogamy has been found to link with
shriveled seeds which further hampered the breeding efforts.
Therefore, efforts have been initiated to identify the molecular
markers/genes/genomic segments associated with cleistogamy
and possibly to break its linkage with shriveled seeds. As the first
step a recombinant inbred line (RIL) population has been developed
from the crossing parents ICPL 99010 (cleisto flowers) and
ICP 5529 (open flowers). RILs are being subjected to high density
genotyping using 50k SNP array. In parallel RILs are being
phenotyped for the cleistogamy and shriveled seeds. Trait phenotyping
data together with SNP genotyping data will be used
for the identification of genes and genomic segment associated
with the target traits. Identified genes/genomic segments for
cleistogamy/ shriveled seeds will help in selection of lines with
self-pollinating behavior and acceptable seed size.
 
Date 2017-02
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/10317/1/Abstract_Book_430.pdf
Yadav, P and Saxena, R K and Kandalkar, V S and Sameer Kumar, C V and Varshney, R K (2017) Identification of genes and genomic segments for cleistogamy in Pigeonpea(Cajanus cajan L.). In: InterDrought-V, February 21-25, 2017, Hyderabad, India.