eprintid: 6412
rev_number: 11
eprint_status: archive
userid: 19
dir: disk0/00/00/64/12
datestamp: 2013-01-15 08:54:39
lastmod: 2014-02-07 05:40:53
status_changed: 2013-01-15 08:54:39
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Haussmann, B I G
creators_name: Hess, D E
creators_name: Sissoko, I
creators_name: Kayentao, M
creators_name: Reddy, B V S
creators_name: Welz, H G
creators_name: Geiger, H H
icrisatcreators_name: Hess, D E
icrisatcreators_name: Sissoko, I
icrisatcreators_name: Reddy, B V S
affiliation: University of Hohenheim(Stuttgart)
affiliation: ICRISAT(Patancheru)
affiliation: Institut d'Economie Rurale (Bamako)
country: Germany
country: India
country: Mali
title: Diallel analysis of sooty stripe resistance in sorghum
ispublished: pub
subjects: s1.4
full_text_status: restricted
keywords: GCA, heritability,Mali, Ramulispora sorghi, SCA, Sorghum bicolor
abstract: Sooty stripe [Ramulispora sorghi (Ellis and Everhart) Olive and Lefebre] is a widespread foliar disease of sorghum [Sorghum bicolor (L.) Moench] in West Africa, responsible for grain yield losses up to 46%. We studied the inheritance of sooty stripe resistance in a 9 × 9 sorghum F2-population diallel grown together with parent lines and checks in1996 under natural disease pressure at two locations in Mali. The percentage of infected leaf area was determined twice over a two-week interval during the season. At the second evaluation, the mean sooty stripe severity amounted to 13% infected leaf area at Samanko and 12% at Cinzana. The frequency distribution of the entries was approximately normal for the mean disease severity, averaged across assessment dates and locations, pointing to the involvement of multiple genes. With the data combined across the two locations, genetic differences among lines and among F2 populations were highly significant. Genotype × location interaction variances were also significant but much smaller than the genetic variances. Broad-sense heritability estimates were 0.92 for lines and 0.94 for the F2 populations, for the mean percentage infected leaf area across the two assessment dates. General combining ability effects (GCA) determined most of the differences among the F2 populations. Specific combining ability effects (SCA), and the interactions of GCA or SCA with locations were also significant but less important. Line performance per se was highly correlated with GCA. Because of the high heritability and predominance of additive effects, prospects are good for the genetic improvement of resistance to sooty stripe in sorghum in Mali, using simple pedigree or recurrent selection procedures
date: 2001
date_type: published
publication: Euphytica
volume: 122
number: 1
publisher: Kluwer Academic
pagerange: 99-104
refereed: TRUE
issn: 0014-2336
official_url: http://dx.doi.org/10.1023/A:1012621729189
related_url_url: http://scholar.google.co.in/scholar?as_q=Diallel+analysis+of+sooty+stripe+resistance+in+sorghum&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:   Haussmann, B I G and Hess, D E and Sissoko, I and Kayentao, M and Reddy, B V S and Welz, H G and Geiger, H H  (2001) Diallel analysis of sooty stripe resistance in sorghum.  Euphytica, 122 (1).  pp. 99-104.  ISSN 0014-2336     
document_url: http://oar.icrisat.org/6412/1/Euphytica_122_1_99-104_2001.pdf