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Genetic analysis of recombinant inbred lines for iron deficiency chlorosis and productivity traits in groundnut

OAR@ICRISAT

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Relation http://oar.icrisat.org/10166/
http://dx.doi.org/10.5958/0975-6906.2017.00056.6
10.5958/0975-6906.2017.00056.6
 
Title Genetic analysis of recombinant inbred lines for iron deficiency chlorosis and productivity traits in groundnut
 
Creator Naidu, G K
Pattanashetti, S K
Boodi, I H
Singh, O K
Prakyath Kumar, K V
Biradar, B D
Wali, M C
 
Subject Groundnut
Genetics and Genomics
 
Description Iron deficiency is an important abiotic constraint reducing
the growth and yield of groundnut especially under
calcareous soils. Foliar application of Fe-chelates can
overcome iron deficiency but it is not economical.
Evaluation of 318 recombinant inbred lines (RILs) along
with parents for iron deficiency chlorosis (IDC) and
productivity traits under iron deficient soils over three years
indicated significant genotypic and genotypic x
environment interaction (GE) component for both IDC and
productivity traits. Among the RILs, range of variation was
higher than that of the parents for visual chlorotic rating
(VCR), SPAD chlorophyll meter reading (SCMR) and
productivity parameters across three years indicated the
presence of transgressive segregants. VCR had higher
phenotypic and genotypic, variances, heritability and
genetic advance as per cent of mean (GAM) in all the three
years as compared to SCMR. Among productivity traits,
pod yield (g plant–1) had higher PCV and GCV compared to
shelling per cent and 100 seed weight. Significant negative
correlation between VCR and pod yield per plant indicated
effect of IDC on productivity in RILs. Nine lines were
superior for both IDC tolerance and productivity traits. This
extensive phenotyping of RIL population for IDC tolerance
under iron deficient conditions can be used for
identification of genomic regions associated with IDC
tolerance by genotyping of this RIL population.
 
Publisher Indian Society of Genetics & Plant Breeding
 
Date 2017
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/10166/1/12-414-421-GOPALAKRISHNA%20K%20NAIDU.pdf
Naidu, G K and Pattanashetti, S K and Boodi, I H and Singh, O K and Prakyath Kumar, K V and Biradar, B D and Wali, M C (2017) Genetic analysis of recombinant inbred lines for iron deficiency chlorosis and productivity traits in groundnut. Indian Journal of Genetics and Plant Breeding, 77 (3). pp. 414-421. ISSN 0975-6906