Journal of Food, Agriculture and Environment

Effects of post-anthesis heat stress on yield and yield attributes in wheat (T. aestivum) genotypes

Author(s):

Reza Taghizadeh ^1*, Raouf Seyed Sharifi ²

Recieved Date: 2009-11-17, Accepted Date: 2010-04-05

Abstract:

In order to study the effects of post-anthesis heat stress on yield and yield attributes in wheat (T. aestivum) genotypes, a factorial experiment based on randomized complete block design with three replications was conducted in 2008 at the Research Farm of Islamic Azad University, Ardabil Branch. Treatments were post-anthesis heat stress with change of planting dates in three levels (2 October,17 October and 1 November) plus wheat genotypes in four levels (Sardari, Finkan, Saisonez and Azar). Results indicated that different levels of post-anthesis heat stress had significant effects on yield and yield components in wheat genotypes. Wheat genotypes had different response to these characteristics. The grain yield varied between 226 g m^-2 in Sardari genotype and 115 g m^-2 in Saisonez genotype. Combined effect of genotype×different levels of post-anthesis heat stress was significant on grain yield. Maximum grain yield (229 g m^-2) was obtained in the plots where Sardari genotype was planted in the first sowing date and minimum of it (115.5 g m^-2) was obtained in the plots where Saisonez genotype was planted in the third sowing date due to confronting with increasing in post-anthesis heat stress. In conclusion, it can be suggested that in order to increase grain yield, Sardari genotype should be planted in the first sowing date due to the least period of confronting with post-anthesis heat stress in conditions of Ardabil Plain.

Keywords:

Post-anthesis heat stress, wheat, yield, yield components

---

Journal: Journal of Food, Agriculture and Environment
Year: 2010
Volume: 8
Issue: 2
Category: Agriculture
Pages: 775-777

---

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 :