eprintid: 1238
rev_number: 11
eprint_status: archive
userid: 14
dir: disk0/00/00/12/38
datestamp: 2011-09-09 15:12:22
lastmod: 2011-09-09 15:12:22
status_changed: 2011-09-09 15:12:22
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@cgiar.org
item_issues_count: 0
creators_name: Rao, V P
creators_name: Thakur, R P
creators_name: Rai, K N
creators_name: Sharma, Y K
icrisatcreators_name: Rao, V P
icrisatcreators_name: Thakur, R P
icrisatcreators_name: Rai, K N
affiliation: ICRISAT(Patancheru)
affiliation: Agricultural Research Station
country: India
title: Downy mildew incidence on pearl millet cultivars and pathogenic variability among isolates of Sclerospora graminicola in Rajasthan
ispublished: pub
subjects: S1.5
full_text_status: public
abstract: 	Downy mildew (DM; caused by S. graminicola) incidence was evaluated during the rainy seasons of 2001-04 in 585 pearl millet (Pennisetum glaucum) fields in 16 districts of Rajasthan, India. The virulence of 12 S. graminicola isolates from 4 districts of western Rajasthan (Barmer, Bikaner, Churu and Jodhpur) and 3 controls (Sg 139, Sg 212 and Sg 409 from Jodhpur, Durgapura and Patancheru) on 7 pearl millet lines (IP 18292, IP 18293, P 7-4, P 310-17, 700651, 852B and ICMP 451) was also evaluated under greenhouse conditions. Of the 585 pearl millet fields, 59% were infected by DM. The mean DM incidence varied from low to moderate (1-21%) in 14 districts; DM was not recorded in Alwar and Karauli districts. Of the 26 hybrids encountered during the survey, 6 hybrids (Pusa 23, JKBH 26, Proagro 9444, Pioneer 7688, PAC 931 and HHB 67) were highly resistant (mean DM incidence of less than or equal to 5%) and 13 hybrids were disease-free. Generally, DM incidence was higher in hybrids in Sikar, Churu, Jodhpur and Barmer. In the pathogenicity test, the DM incidence varied from 2 to 100% across isolate x host combinations. Of the 15 isolates evaluated, 7 (Sg 138, Sg 381, Sg 382, Sg 383, Sg 384, Sg 385 and Sg 388) were highly virulent, 2 (Sg 407 and Sg 409) were virulent, 2 (Sg 139 and Sg 145) were moderately virulent and 4 (Sg 144, Sg 148, Sg 212 and Sg 406) were slightly virulent. Sg 384 and Sg 385 from Barmer were the most virulent.
date: 2005
publication: SAT eJournal
volume: 46
pagerange: 107-110
refereed: TRUE
official_url: http://ejournal.icrisat.org
related_url_url: http://scholar.google.co.in/scholar?as_q=Downy+mildew+incidence+on+pearl+millet+cultivars+and+pathogenic+variability+among+isolates+of+Sclerospora+graminicola+in+Rajasthan&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publ
related_url_type: author
citation:   Rao, V P and Thakur, R P and Rai, K N and Sharma, Y K  (2005) Downy mildew incidence on pearl millet cultivars and pathogenic variability among isolates of Sclerospora graminicola in Rajasthan.  SAT eJournal, 46.  pp. 107-110.      
document_url: http://oar.icrisat.org/1238/1/replace4.pdf