eprintid: 4058
rev_number: 15
eprint_status: archive
userid: 14
dir: disk0/00/00/40/58
datestamp: 2011-12-14 13:46:47
lastmod: 2012-03-05 10:14:53
status_changed: 2011-12-14 13:46:47
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@cgiar.org
item_issues_count: 0
creators_name: Wani, S P
creators_name: Dart, P J
creators_name: Upadhyaya, M N
icrisatcreators_name: Wani, S P
icrisatcreators_name: Dart, P J
icrisatcreators_name: Upadhyaya, M N
affiliation: ICRISAT(Patancheru)
country: India
title: Factors affecting nitrogenase activity (C2H2 reduction) associated with sorghum and millet estimated using the soil core assay

ispublished: pub
subjects: S1.5
subjects: s1.4
full_text_status: restricted
pres_type: paper
note: We thank I)r. N. Sectherama, Sorghurn Physiologist,
RISAT, for allowing us to sample his line-wurcc
,igation experiment. Dr. John M. Day for critical
scussion of thc text. and Mr. Bruce Ciilliver for
'itistical advice. Thc assistance of Mr. S. C'.
handrapalaiah and Mr. C;. G. Napahhushana is
-atefully acknowledged.
abstract: Factors affecting nitrogenase activity associated with sorghum and millet roots have been studied. Plants grown in iron cores in the field and then assayed had significantly higher activity than plants cored at the time of assay. Mechanical disturbance during transportation of the cores reduced the activity significantly. Any delay between cutting off the plant top and injecting C2H2 gas led to a reduction in the level of nitrogenase activity determined. Diurnal variation in nitrogenase activity was noted but was not correlated with soil temperature. Most activity occurred at the end of the photoperiod. Seasonal variation in nitrogenase activity of plants was observed and was correlated with the ontogenetic development of the host plant, being most at flowering. A low but significant correlation existed between soil moisture content and nitrogenase activity associated with the plant.


date: 1983
date_type: published
publication: Canadian Journal of Microbiology
volume: 29
number: 8
publisher: National Research Council Canada
pagerange: 1063-1069
refereed: TRUE
issn: 1480-3275
official_url: http://dx.doi.org/10.1139/m83-164
related_url_url: http://scholar.google.co.in/scholar?as_q=Factors+affecting+nitrogenase+activity+%28C2H2+reduction%29+associated+with+sorghum+and+millet+estimated+using+the+soil+core+assay&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publ
related_url_type: author
citation:   Wani, S P and Dart, P J and Upadhyaya, M N  (1983) Factors affecting nitrogenase activity (C2H2 reduction) associated with sorghum and millet estimated using the soil core assay.  Canadian Journal of Microbiology, 29 (8).  pp. 1063-1069.  ISSN 1480-3275     
document_url: http://oar.icrisat.org/4058/1/CanJMicrobiol_29_1063-1069_1983.pdf