Abstract
This study aimed at investigating the response of two most common dryland wheat cultivars to temperature and rainfall variability between 2005 and 2015 in Iran. The results indicated sharp changes in the temperature (increase) and rainfall (decrease) of the study area between 2010 and 2015. Based on the plot analysis of cultivars phenology and grain yield variations, cultivar Azar2 showed more instability compared to Sardari during 2005–2015. The results of the regression analysis showed extended length of growing period (LGP) and the length of vegetative phase (LVP) for Sardari and Azar2 cultivars as well as extended length of grain filling period (LGFP) and increased grain yield for Azar2 during 2005–2015. For Azar2, shortened LGP, LVP, and decreased grain yield were observed during 2010–2015. Overall, temperature (maximum and minimum) had more determining effects on Sardari grain yield compared with rainfall. The results also indicated that the phenology and yield of both cultivars were more dependent on the weather conditions during April and May. This study concluded that variations in LGFP led to more significant changes in grain yield of both cultivars (i.e., Sardari and Azar2). This study further concluded that phenology and grain yield of Azar2 were more affected by weather variability than Sardari.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
