eprintid: 3928
rev_number: 11
eprint_status: archive
userid: 16
dir: disk0/00/00/39/28
datestamp: 2011-11-14 05:41:23
lastmod: 2011-11-14 07:22:15
status_changed: 2011-11-14 07:22:14
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
item_issues_count: 0
creators_name: Singh, S D
creators_name: Williams, R J
icrisatcreators_name: Singh, S D
icrisatcreators_name: Williams, R J
affiliation: ICRISAT(Patancheru)
country: India
title: The role of sporangia in the epidemiology of pearl millet downy mildew
ispublished: pub
subjects: S1.5
full_text_status: restricted
abstract: Exposure of field plants to sporangial inoculum provided by earlier planted "infector rows" resulted in considerably more downy mildew on all Pennisetum americanum cvs. tested than was obtained by exposure of the cvs. to oospores of Sclerospora graminicola. In large, isolated field plots of susceptible hybrids, downy mildew incidence and severity were considerably greater in plots with a central source of sporangia (potted plants with sporulating infected leaves) present from crop emergence than in plots with no such initial sporangial source. Sporangia remained infective for up to 340 m downwind from a sporangial source during the rainy season, but during the dry, post-rainy season no infection occurred at >80 m from a sporangial source. The significance of these results in epidemiology and their application for large scale field screening for resistance are discussed
date: 1980
date_type: published
publication: Phytopathology 
volume: 70
number: 12
publisher: American Phytopathological Society
pagerange: 1187-1190
refereed: TRUE
issn: 0031-949X
official_url: http://dx.doi.org/10.1094/Phyto-70-1187
related_url_url: http://scholar.google.co.in/scholar?as_q=The+role+of+sporangia+in+the+epidemiology+of+pearl+millet+downy+mildew&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&as_sdt=1.&as_sdtp=on&as_sdtf=&as_sd
related_url_type: author
citation:   Singh, S D and Williams, R J  (1980) The role of sporangia in the epidemiology of pearl millet downy mildew.  Phytopathology , 70 (12).  pp. 1187-1190.  ISSN 0031-949X     
document_url: http://oar.icrisat.org/3928/1/Phytopatholog_70_12_1187-1190_1980.pdf