eprintid: 6924
rev_number: 8
eprint_status: archive
userid: 19
dir: disk0/00/00/69/24
datestamp: 2013-07-10 08:34:27
lastmod: 2014-04-21 05:31:51
status_changed: 2013-07-10 08:34:27
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@CGIAR.ORG
creators_name: Kannangara, T
creators_name: Durley, R C
creators_name: Simpson, G M
creators_name: Seetharama, N
icrisatcreators_name: Seetharama, N
affiliation: University of Saskatchewan(Saskatoon)
affiliation: ICRISAT(Patancheru)
country: Canada
country: India
title: Drought resistance of Sorghum bicolor. 6. Changes in endogenous growth regulators of plants grown across an irrigation gradient
ispublished: pub
subjects: s1.4
full_text_status: public
keywords: Abscisic acid, phaseic acid, indole-3-acetic acid, water stress, grain yield, sorghum
abstract: A gradient of water stress was created among sorghum plants with a line-source sprinkler irrigation system. Changes in endogenous growth regulators, leaf water potential (ψw), solute potential (ψs), leaf conductance, leaf temperature, leaf senescence, leaf area and plant height were monitored. Abscisic acid (AbA) levels were increased and phaseic acid (PA) levels were reduced under stress. IAA levels could not be related to stress. Leaf ψw, leaf ψs and leaf conductance were reduced and leaf temperature was increased by water stress. Leaf area development was more sensitive to stress than stem elongation. Linear correlations between irrigation, AbA, leaf ψw, leaf ψs and plant height were high (r > 0.9). The correlation between AbA and grain yield (r = − 0.65) was similar to that between irrigation and grain yield (r = 0.68), but opposite in sign. Leaf AbA content measured during early growth could thus be used to predict grain yield under a given irrigation regime.Key words: Abscisic acid, phaseic acid, indole-3-acetic acid, water stress, grain yield, sorghum
date: 1983
date_type: published
publication: Canadian Journal of Plant Science
volume: 63
number: 1
publisher: Agricultural Institute of Canada 
pagerange: 147-155
refereed: TRUE
issn: 1918-1833
official_url: http://dx.doi.org/10.4141/cjps83-013
related_url_url: http://scholar.google.co.in/scholar?as_q=Drought+resistance+of+Sorghum+bicolor.+6.+Changes+in+endogenous+growth+regulators+of+plants+grown+across+an+irrigation+gradient&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as_yhi=&btnG=
related_url_type: pub
funders: International Development Research Centre, Ottawa, Canada
citation:   Kannangara, T and Durley, R C and Simpson, G M and Seetharama, N  (1983) Drought resistance of Sorghum bicolor. 6. Changes in endogenous growth regulators of plants grown across an irrigation gradient.  Canadian Journal of Plant Science, 63 (1).  pp. 147-155.  ISSN 1918-1833     
document_url: http://oar.icrisat.org/6924/1/CJPS_63_147-155_1983.pdf