Evaluation of some advanced wheat lines (F7) in normal and drought stress conditions

بوم شناسی کشاورزی

Article 6, Volume 6, Issue 1 - Serial Number 19, March 2014, Pages 97-107   

Document Type: Scientific - Research

DOI: 10.22067/jag.v6i1.35677

Authors

R. Nikseresht^* ; A. Mohammadi; E. Majidi Heravan; K. Mostafavi

Abstract

For assessment of drought stress effects on agro characteristics of 30 lines and 6 wheat cultivars and for introducing of drought tolerant and susceptible ones one trial were established using split plot base of randomized complete block design with two replications, main plots were stress and non-stress condition and sub plots contain 30 lines and six wheat cultivars in the check trial, irrigation the farm was done with the normal regime, but in stress trial for germination of seeds and one irrigation in Isfand to the end of rooting the farm was irrigated. Within and end of growth season we measured some agronomic and morphological characters such as yield and its component, height, peduncle length, and etc. Responses of cultivars under stress and non-stress conditions were' different, for example drought stress reduced yield. In spite of this general yield reducing, we found some line, such as 2, 29, 23 had relatively high yield (in tree levels). In order to final evaluate using Factor Analysis, Principal Component, Cluster Analysis .Factor Analysis indicated that four important factors accounted for about 80.245 and 79.624 percent of the total variation among traits in normal and drought stress conditions. With cluster analysis of 36 lines and cultivar using Ward procedure based on Euclidean distance were grouped in 4 distance cluster.

Keywords

Drought tolerance; Agro characteristics; grain yield