Journal of Food, Agriculture and Environment

Using flag leaf chlorophyll content and canopy temperature depression for determining drought resistant durum wheat genotypes

Author(s):

Mohammad Kazem Shefazadeh ^1*, Rahmatollah Karimizadeh ^{2, 3}, Mohtasham Mohammadi ^{2, 3},  Hamid Saeedi Suq ²

Recieved Date: 2011-09-04, Accepted Date: 2012-01-12

Abstract:

In order to identify drought tolerance genotypes, ten lines of advanced durum wheat genotypes with Dehdasht check cultivar were tested in a randomized complete block design with four replicates under two conditions of drought mild and severe stress in farmer field of Gachsaran. In this research, canopy temperature depression (CTD) and chlorophyll content of flag leaf (CHL) measured at three stages including emergence of fifty percent of inflorescence (ZGS 54), completing of anthesis (ZGS 69) and watery ripe, clear liquid (ZGS 71). Based on yield of the mild stress (YP) and severe stress (YS), quantities indices of drought resistance as mean productivity (MP), tolerance index (TOL), geometric mean productivity (GMP), stress susceptibility index (SSI) and stress tolerance index (STI) were calculated. Genotypes 2 and 4 had high first principal component and low second principal component in two environments selected as best genotypes. Biplot multivariate diagram showed that genotypes no 2, 4 and 10 located in neighbour of lines of drought resistant indices such as MP, GMP and STI and also can be introduced as drought tolerant genotypes. The results of canopy temperature depression in completing of anthesis stage and chlorophyll content in seed filling stage (watery ripe, clear liquid) showed significant difference at 1% probability level. Significant correlation among MP, SSI, CTD and CHL showed that canopy temperature depression and chlorophyll content can play effective role in identifying drought tolerant genotypes. Correlation analysis between yield and drought resistant indices revealed that MP, GMP and STI are the best indices for screening of durum wheat genotypes.

Keywords:

Canopy temperature, chlorophyll content, Gachsaran, Zadoks scale, durum wheat, rainfed condition, supplemental irrigation, drought indices

---

Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 1
Category: Agriculture
Pages: 509-515

---

Full text for Subscribers

---

Information:

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 :