Water Use Efficiency of Common Sorghum and Grain Corn Cultivars and Comparing the Effect of Water Deficit on These Cultivars

Research On Crop Ecophysiology

دوره 18، شماره 1، فروردین 2023، صفحه 9-23   

شناسه دیجیتال (DOI): 10.30486/roce.2023.703843

نویسندگان

NASRIN SAFIAN¹؛ MOHAMMADREZA NADERIDARBAGHSHAHI²؛ HAMID REZA SALEMI³؛ MASSOUD TORABI³؛ ALI SOLEIMANI⁴

¹PhD Student, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.

²Associate Professor in Agronomy, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.

³Assistant Professor, Isfahan Agriculture and Natural Resources Research Center, Isfahan, Iran.

⁴Professor in Agronomy, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.

چکیده

Water Use Efficiency of Common Sorghum and Grain Corn Cultivars and Comparing the Effect of Water Deficit on These Cultivars
 
 Nasrin Safian¹, Mohammadreza Naderidarbaghshahi^2*, Hamid Reza Salemi³, Massoud Torabi⁴, Ali Soleimani⁵
1- PhD Student, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.  
  2- Associate Professor in Agronomy, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran. 
3- Assistant Professor, Isfahan Agriculture and Natural Resources Research Center, Isfahan, Iran. 
  4- Assistant Professor, Isfahan Agriculture and Natural Resources Research Center, Isfahan, Iran.
5- Professor in Agronomy, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran. 
 
* Corresponding Author E-mail: [e-mail]
 
Received: 20 October 2022                                                                                Accepted:  8  January  2023
 
Abstract
Drought stress is the most important abiotic factor which limits the growth and production of plants in arid and semi-arid regions. In order to investigate the effects of irrigation regimes (100, 80 and 60% of the plant's water requirement based on the Penman-Monteith method) on grain yield of sorghum (Payam and Kimia) and corn (704 and Maxima) cultivars under the hot and dry climate of Isfahan, a split plots experiment was carried out in the years 2018-2019 in randomized complete blocks design with three replications. Results showed that the highest index of chlorophyll and grain fat was obtained from cultivar 704 and in 100% of irrigation. Cultivar 704 produced the highest grain lignin under 60% and 80% irrigation regimes. Kimia cultivar produced more lignin compared to Payam cultivar. Payam cultivar produced the most yield and the highest plants under irrigation regimes of 100 and 80. Compared to Payam cultivar, Kimia showed more 1000 grains weight under different irrigation regimes. The harvest indices of Kimia and Payam cultivars showed significant decreases by increasing the drought. Different cultivars have different mechanisms to tolerate drought stress. As a drought tolerant plant, Sorghum was less damaged by stress than corn. Biochemical traits of plants can be used as stress resistance indicators in breeding programs and the selection of resistant cultivars.
 
 

کلیدواژه‌ها

Keywords: Grain fat؛ Harvest index؛ Drought stress؛ Grain yield؛ Grain lignin

سایر فایل های مرتبط با مقاله

DR. Naderi .2.pdf