eprintid: 8961
rev_number: 7
eprint_status: archive
userid: 17
dir: disk0/00/00/89/61
datestamp: 2015-09-18 04:41:04
lastmod: 2015-09-18 04:41:04
status_changed: 2015-09-18 04:41:04
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Subrahmanyam, P
creators_name: McDonald, D
creators_name: Gibbons, R W
creators_name: Rao, P V S
icrisatcreators_name: Subrahmanyam, P
icrisatcreators_name: McDonald, D
icrisatcreators_name: Gibbons, R W
icrisatcreators_name: Rao, P V S
affiliation: ICRISAT (Patancheru)
country: India
title: Components of Resistance to Puccinia arachidis in Peanuts
ispublished: pub
subjects: s1.3
full_text_status: restricted
keywords: Groundnut, Screening methods, Slow rusting.
abstract: Thirty peanut genotypes were inoculated with uredospores of the rust fungus Puccinia arachidis in a replicated glasshouse trial, and components of disease resistance—incubation period, infection frequency, pustule diameter, percent ruptured pustules, and percent leaf area damaged—were studied for a single cycle of infection. All components studied were significantly correlated with one another and with mean field rust scores taken over several seasons. Incubation period was negatively correlated with the other components, which were positively correlated with one another. Resistant and susceptible genotypes were readily separated on the basis of the resistance components measured in the glasshouse trial, but classification of moderately resistant genotypes was less effective by this method than by use of field scores. A glasshouse screening method could be useful in areas where rust epidemics do not occur or are irregular in occurrence or where other foliar diseases interfere with field screening. The measurement of epidemiologically significant characters will allow the identification of rate-limiting resistance, which is likely to be more stable than immunity.
date: 1983
date_type: published
publication: Phytopathology
volume: 73
number: 2
publisher: The American Phytopathological Society
pagerange: 253-256
refereed: TRUE
issn: 0031-949X
official_url: http://dx.doi.org/10.1094/Phyto-73-253
related_url_url: http://scholar.google.co.in/scholar?as_q=Components+of+Resistance+to+Puccinia+arachidis+in+Peanuts&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&btnG=&hl=en&as_sdt=0%2C5
related_url_type: pub
citation:   Subrahmanyam, P and McDonald, D and Gibbons, R W and Rao, P V S  (1983) Components of Resistance to Puccinia arachidis in Peanuts.  Phytopathology, 73 (2).  pp. 253-256.  ISSN 0031-949X     
document_url: http://oar.icrisat.org/8961/1/Phytopathology_73_253-256_1983.PDF