eprintid: 9228
rev_number: 9
eprint_status: archive
userid: 1305
dir: disk0/00/00/92/28
datestamp: 2016-01-05 08:08:14
lastmod: 2016-01-05 08:08:14
status_changed: 2016-01-05 08:08:14
type: conference_item
metadata_visibility: show
creators_name: Pujer, S
creators_name: Kenchangoudar, P V
creators_name: Gowda, M V C
creators_name: Motagi, B N
icrisatcreators_name: Motagi, B N
affiliation: Oilseeds Scheme, Main Agricultural Research Station, University of Agricultural Sciences (Dharwad)
affiliation: ICRISAT (Kano)
country: India
country: Nigeria
title: Evaluation of groundnut genotypes for resistance to Sclerotium rolfsii under artificial field inoculated conditions
ispublished: pub
subjects: s1.3
divisions: D3
crps: crp1.5
full_text_status: public
pres_type: paper
keywords: Groundnut, Genotypes, Groundnut Production, Sclerotium Rolfsii, Breeding
abstract: Stem and pod rot caused by Sclerotium rolfsii is the major constraint to groundnut production in many
groundnut growing regions of the world. Paucity of suitable field screening methods to identify sclerotium
resistant genotypes hinders the progress of resistance breeding. A sick plot with high inoculum load of
Sclerotium rolfsii, was established. A total of 165 sergeants derived from TAG 24 (adopted but susceptible
variety) . R 9227 (stem rot resistant variety) were screened for resistance to stem and pod rot. The Fs and F6
generations were grown in the sick plot to confirm their reaction to stem and pod rot. Among different
parameters, variation was highly heritable for yield per plant, disease incidence parameters potential for
selection under disease epidemics. Strong negative association between disease incidence and yield per
plant revealed the importance of disease incidence in determination of yield per plant under epiphytotic
conditions. The higher number of superior segregants observed for p0d weight per plant (26), oil content
(21), test weight ( 19) and shelling percentage (8) and disease at harvest (6) were compared to both the
parents. None of the genotypes showed complete resistance. It is unlikely that highly resistant genotypes to
neurotropic pathogen like Sclerotium rolfsii would be identified. However information obtained on
genotypic variance, heritability, genetic advances and association of disease with yield and lines selected
with considerable sclerotium resistance with good yield attributing characters (6) can be utilized in future
breeding programs.
date: 2015-11
date_type: published
pagerange: 18
event_title: Proceedings of the 8th International Conference of the Peanut Research Community-Advances in Arachis through Genomics and Biotechnology (AAGB-2015)
event_location: Brisbane, Australia
event_dates: November 4 - 7, 2015
event_type: conference
refereed: TRUE
related_url_url: https://scholar.google.co.in/scholar?as_q=Evaluation+of+groundnut+genotypes+for+resistance+to+Sclerotium+rolfsii+under+artificial+field+inoculated+conditions&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&btnG=&hl=en&as_s
related_url_type: pub
citation:   Pujer, S and Kenchangoudar, P V and Gowda, M V C and Motagi, B N  (2015) Evaluation of groundnut genotypes for resistance to Sclerotium rolfsii under artificial field inoculated conditions.  In: Proceedings of the 8th International Conference of the Peanut Research Community-Advances in Arachis through Genomics and Biotechnology (AAGB-2015), November 4 - 7, 2015, Brisbane, Australia.     
document_url: http://oar.icrisat.org/9228/1/Multiple%20biotic%20stress%20resistant%20groundnut%20lines%20identified%20in%20%20Spanish%20background-AAGB%202015.pdf