Journal of Food, Agriculture and Environment

Vol 7, Issue 3&4,2009
Online ISSN: 1459-0263
Print ISSN: 1459-0255

Effects of drought stress and potassium on some of the physiological and morphological traits of sunflower (Helianthus annuus L.) cultivars


A. Afkari Bajehbaj 1, 2, N. Qasimov 2, M. Yarnia 3*

Recieved Date: 2009-07-30, Accepted Date: 2009-10-07


For evaluation water deficit stress and potassium rates effects on some morpho-physiological attributes of sunflower, an experiment was conducted in a RCBD based split plot factorial design in three replications in Islamic Azad University, Tabriz Branch research field in 2008. Four sunflower cultivars as Airfloure, Alestar, Armawirski and Ismailli, along with three rates of potassium application as control, 75 and 150 kg/ha were arranged in subplots and three rates of water application after 70, 140 and 210 mm evaporation from Class A pan were arranged in main plots. The results showed that the application of water deficit stress decreased significantly plant height, seed number per head, seed hollowness percent, leaf water potential, leaf area index, leaf relative water content, stomatal resistance and harvest index. In water application after 70 mm evaporation from Class A pan Airfloure and Alestar cultivars had the highest seed number per head and the least hollowness percent, while maximum harvest index was obtained in Airfloure cultivar in consumption of 75 kg/ha potassium sulphate and water application after 210 mm evaporation from Class A pan. Also stomatal resistance increased in all cultivars with increasing water application intervals.


Water deficit, leaf relative water content, leaf water potential, sunflower, potassium

Journal: Journal of Food, Agriculture and Environment
Year: 2009
Volume: 7
Issue: 3&4
Category: Agriculture
Pages: 448-451

Full text for Subscribers

Note to users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.

Article purchasing

If you like to purchase this specific document such as article, review or this journal issue, contact us. Specify the title of the article or review, issue, number, volume and date of the publication. Software and compilation, Science & Technology, all rights reserved. Your use of this website details or service is governed by terms of use. Authors are invited to check from time to time news or information.

Purchase this Article:   20 Purchase PDF Order Reprints for 15

Share this article :