Record Details

Introgression Lines with Improved Resistance to Late Leaf Spot and Rust in Peanut

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/9229/
http://ceg.icrisat.org/v-nggibci/
 
Title Introgression Lines with Improved Resistance to Late Leaf Spot and Rust in Peanut
 
Creator Paratwagh, S A
Madhumitha, D V
Sukruth, M
Chougale, D B
Varshakumari, -
Motagi, B N
Gowda, M V C
Bhat, R S
 
Subject Groundnut
 
Description In an effort to simultaneously transfer and map the
genomic regions governing resistance to late leaf spot
(LLS) and rust in peanut, two susceptible varieties
(lCGS 76 and OH 86) were crossed to two resistant
synthetic tetraploids; an amphidiploid, ISATGR 278-
18 (Arachis duranensis x Arachis batizocoi) and
an autotetraploid, ISATGR 5B (Arachis magna x
Arachis batizocoi). Two cycles of backcrossing with
the recurrent parents resulted in the development of a
large number of introgression lines (ILs). They (BCl6
and BCl,) were evaluated during the rainy season of
2013 and 2014. ILs differed significantly for LLS and
rust resistance, and productivity traits. Twenty seven
introgression lines superior over lCGS 76, and three
ILs superior over OH 86 for pod yield were selected
from respective crosses. Many of them were highly
resistant to both LLS and rust. Majority of them carried
resistant allele at marker loci linked to LLS and rust.
A few ILs also combined high test weight, shelling
percentage and sound mature kernel percentage. Of
these introgression lines, eleven were also superior
over GPBO 4, a national check variety. These genetic
resources can be of immense use in peanut breeding or
for commercialization.
 
Date 2015-02
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/9229/1/Introgression%20lines-LLS%20%20rust%20rest%20in%20peanut%28NGG2015%29%20pdf.pdf
Paratwagh, S A and Madhumitha, D V and Sukruth, M and Chougale, D B and Varshakumari, - and Motagi, B N and Gowda, M V C and Bhat, R S (2015) Introgression Lines with Improved Resistance to Late Leaf Spot and Rust in Peanut. In: 5th International conference on Next Generation Genomics and Integrated Breeding for Crop Improvement (NGGIBCI-V), February 18 - 20, 2015, ICRISAT, Patancheru, Hyderabad.