Yield performance and adaptation of some Australian and CIMMYT/ICARDA developed wheat genotypes in the West Asia North Africa (WANA) region

Abstract

A set of 29 advanced breeding lines and named cultivars from different breeding programs in Australia was compared with 18 genotypes developed by the CIMMYT/ICARDA breeding programs for their adaptation and yield performance using 5 locations in the WANA region for 2 years. Classification analysis identified 13 CIMMYT/ICARDA genotypes that had a pattern in yield performance similar to 2 Australian cultivars, Leichhardt and Hartog. The classification of environments effectively identified trials that experienced heat stress and received supplementary irrigation. Most of the genotypes developed by the CIMMYT/ICARDA breeding programs showed wide adaptation in the WANA region. Genotypes developed for Australian Mediterranean environments failed to show wide adaptation in the WANA region. However, many Australian genotypes showed specific adaptation to heat-stressed environments. Variation among Australian genotypes for disease resistance and heat tolerance couldbe used for wheat improvement in the WANA region.

Trends in performance of Turkish durum wheats derived from the International Maize and Wheat Improvement Center in an irrigated West Asian and North African environment

“…Nevertheless, the yield progress observed with the introduction of CIMMYT cultivars under all environmental conditions (even when nitrogen level was moderate, lodging was not severe and no pest or disease epidemic occurred) indicates the wide adaptability of these cultivars, as is also suggested by Ortiz-Monasterio et al (1997) and Trethowan et al (2002). Sivapalan et al (2001) also observed a wider adaptation capacity for CIMMYT/ICARDA-developed bread wheat genotypes compared with Australian genotypes in the WANA region.…”

Associations of Environments in South Asia Based on Spot Blotch Disease of Wheat Caused by Cochliobolus sativus

“…The impact of abiotic stresses on response patterns in genotypes across diff erent environments has been reported in studies in Australia (Cooper et al, 1994), West Africa-North Asia (Sivapalan et al, 2001), and in winter yield trials in Ontario, Canada . The impact of abiotic stresses on response patterns in genotypes across diff erent environments has been reported in studies in Australia (Cooper et al, 1994), West Africa-North Asia (Sivapalan et al, 2001), and in winter yield trials in Ontario, Canada .…”

“…In this study, a hierarchical cluster analysis based on G × L interaction of AUDPC for spot blotch appeared to be eff ective for subdividing the diverse South Asian region into more uniform subregions for better germplasm evaluation. The impact of abiotic stresses on response patterns in genotypes across diff erent environments has been reported in studies in Australia (Cooper et al, 1994), West Africa-North Asia (Sivapalan et al, 2001), and in winter yield trials in Ontario, Canada . If wide adaptability is the main breeding objective, representative locations from the eastern Indo-Gangetic plains of India and Nepal (Cluster I) should be chosen.…”

Stay-green traits to improve wheat adaptation in well-watered and water-limited environments

“…The parental lines contrast for yield and stay-green. SeriM82 is a high-yielding drought-tolerant, stay-green line ( Sivapalan et al , 2000 , 2001 ; Olivares-Villegas et al , 2007 ), while Hartog is a senescent cultivar adapted to subtropical Australia ( Manschadi et al , 2006 , 2010 ; Christopher et al , 2008 ).…”