Winter Wheat Eastern European Regional Yield Trial: Identification of Superior Genotypes and Characterization of Environments

Sharma, R. C.; Morgounov, Alexey; Akın, Beyhan; Bespalova, L. A.; Láng, László; Литвиненко, М. А.; Mustăţea, P.; Öztürk, İrfan; Postolatiy, A.; Rajaram, S.; Braun, Hans J.

doi:10.2135/cropsci2014.01.0028

Cited by 16 publications

(18 citation statements)

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“…There is a more complex influence of weather conditions on the quality parameters of winter wheat compared to spring wheat (Johansson and Svensson, 1998). Winter bread wheat growing environments in Central Asia are diverse (Sharma et al, 2014a) and there is a significant effect of environment and genotype × environment (GE) interaction on grain yield under both irrigated (Sharma et al, 2010) and rainfed (Sharma et al, 2012) conditions. Similar findings on the effect of GE interaction on wheat grain yield have been reported for the surrounding regions (Osmanzai and Sharma, 2008;Sakin et al, 2011;Sharma et al, 2014b).…”

Section: Introductionmentioning

confidence: 99%

Genotype × environment interaction and stability of grain yield and selected quality traits in winter wheat in Central Asia

Khazratkulova¹,

Sharma²,

Amanov³

et al. 2015

Turk J Agric For

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High grain yield and improved quality determine the commercial success of winter wheat (Triticum aestivum L.) varieties in Central Asia. This study was conducted to determine the effect of environment on grain yield, 1000-kernel weight (TKW), test weight (TWT), protein, and gluten content, and to identify superior wheat genotypes for yield and quality. Thirty winter wheat genotypes were evaluated in 3 years (2010-2012) over multiple locations. A genotype and genotype × environment interaction biplot analysis was used to determine the superior genotypes. There were significant effects of environment and genotype × environment interaction on yield and quality traits. The 30 wheat genotypes showed variations for grain yield (3.7-5.6 t ha-1), TKW (33.6-42.4 g), TWT (753-797 g/L), protein (13.3%-14.8%), and gluten (27.2%-29.5%) content. There was a significant positive correlation between grain yield and TKW in three out of seven environments. There was no correlation of grain yield with TWT, protein, and gluten content with one exception. There were different sets of five most superior genotypes for individual traits. However, certain genotypes were superior based on grain yield and quality traits. Gozgon, Elomon, ID800994.W/Vee//Lagos-12, Jaikhun, and Kroshka were the five most superior genotypes for four quality traits. Elomon, Gozgon, Jaikhun, ID800994.W/Vee//Lagos-12, and Kiriya were the five most superior genotypes based on grain yield, TKW, TWT, protein, and gluten content. This study demonstrates success in wheat breeding for combined high yield and improved quality in winter wheat. This study provides information on the combined stability of high yield and improved quality of the internationally important winter wheat genotypes. Therefore, the results of this study could be valuable for national and international winter wheat breeding programs to develop new varieties with high stable grain yield and quality.

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Section: Introductionmentioning

confidence: 99%

Genotype × environment interaction and stability of grain yield and selected quality traits in winter wheat in Central Asia

Khazratkulova¹,

Sharma²,

Amanov³

et al. 2015

Turk J Agric For

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“…Henn. ), and several agronomic traits (Sharma et al, 2014) (Supplemental Table S1). Sharma et al (2014) identified 56 superior genotypes from 8 yr of the WWEERYT, but a seed sample was available for only 35 of the 56 superior genotypes.…”

Section: Methodsmentioning

confidence: 99%

“…I nternational exchange of improved germplasm is important in addressing existing and emerging constraints to global wheat ( Triticum aestivum L.) production. Elite breeding lines tested in international performance nurseries represent the most advanced materials from a collection of breeding programs and best showcase a pool of genotypes for cultivar release or use as parents in future crosses (Peterson and Pfeiffer, 1989; Sharma et al, 2010, 2012, 2014). The International Winter Wheat Improvement Program (IWWIP) is a cooperative breeding program between the Ministry of Agriculture and Rural Affairs of Turkey, the International Maize and Wheat Improvement Center (CIMMYT), and the International Center of Agricultural Research in the Dry Areas (ICARDA) (Morgounov et al, 2005).…”

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confidence: 99%

“…The IWWIP distributes observation nurseries and yield trials comprising high‐yielding, advanced breeding lines to facilitate introduction and exchange of improved germplasm in developing countries for irrigated and dryland production systems (Sharma et al, 2010, 2012). To expand the international exchange of winter wheat germplasm, CIMMYT and Oregon State University initiated the Winter Wheat Eastern European Regional Yield Trial (WWEERYT) as a separate IWWIP project to evaluate elite lines and varieties from Eastern Europe, IWWIP, the Caucus Region, and the United States (Sharma et al, 2014). Sharma et al (2014) identified high‐yielding and stable genotypes in the WWEERYT, using genotype and genotype × environment (GGE) biplot analysis (Yan et al, 2000) that performed well in test locations in Central and Western Asia (CWA), Central and Eastern Europe (CEE), and the United States (USA).…”

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confidence: 99%

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Population Structure and Genetic Diversity Analysis of Germplasm from the Winter Wheat Eastern European Regional Yield Trial (WWEERYT)

et al. 2017

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Characterization of population structure and genetic relatedness within wheat (Triticum aestivum L.) germplasm collections is critical for genomewide association studies (GWAS) and training population development for genomic selection (GS). Cooperative regional or international nurseries are well suited for GWAS and GS studies due to the availability of multi‐environment datasets that are often produced. In this study, we analyzed population structure and genetic diversity of 283 genotypes from 7 yr of the Winter Wheat Eastern European Regional Yield Trial (WWEERYT). The collection was genotyped with single‐nucleotide polymorphism (SNP) markers obtained via genotyping‐by‐sequencing; a subset of 548 highly polymorphic SNPs was used for all analyses. Population structure was composed of seven subpopulations when using a correlated allele frequencies model in the program STRUCTURE. The genotype's breeding program of origin was closely related to, but not a perfect indicator of, subpopulation assignment. Genotypes of Central and Eastern European origin were assigned to six of the seven subpopulations, while genotypes from the United States were assigned to only two of the seven subpopulations. The lowest value for Wright's fixation index observed (FST = 0.20) was between a population of predominately Turkey‐CIMMYT‐ICARDA genotypes and genotypes from the United States, indicating a close relationship between genotypes from these two regions. The characterization of population structure and genetic diversity within the WWEERYT nurseries will allow breeders to accurately select and test germplasm that is genetically diverse from their own by targeting germplasm from different subpopulations identified under model 1. The results presented in this paper will help to foster the utilization and exchange of WWEERYT germplasm across diverse global winter wheat production regions.

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“…In collaboration with Oregon State University, IWWIP operated Winter Wheat Eastern European Regional Yield Trial (WWEERYT) in 1998-2005 using elite lines and cultivars from IWWIP, Eastern Europe (EE), the USA and CWA. A study by Sharma et al [18] analyzed data to identify superior genotypes and key locations that could be useful for future international collaboration on winter wheat. Grain yield and agronomic traits of 422 elite breeding lines and new cultivars from 17 countries were evaluated across 39 locations.…”

Section: Research Highlightsmentioning

confidence: 99%

International Winter Wheat Improvement Program: history, activities, impact and future

Morgounov¹,

Özdemir²,

Keser³

et al. 2019

Front. Agr. Sci. Eng.

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International Winter Wheat Improvement Program (IWWIP) was established in 1986 between the Government of Turkey and CIMMYT with three main objectives: (1) develop winter/facultative germplasm for Central and West Asia, (2) facilitate global winter wheat germplasm exchange, and (3) training wheat scientists. ICARDA joined the program in 1991 making it a threeway partnership that continues to work effectively. The germplasm developed by IWWIP as well as the winter wheat cultivars and lines received from global cooperators are assembled into international nurseries. These nurseries are offered annually to public and private entities (IWWIP website) and distributed to more than 100 cooperators in all continents. IWWIP impact has primarily been in new winter wheat cultivars combining broad adaptation, high yield potential, drought tolerance and disease resistance. A total of 93 IWWIP cultivars have been released in 11 countries occupying annually an estimated 2.5-3.0 Mha. IWWIP cooperation with researchers in Turkey, Central and West Asia and several US universities has resulted in a number of publications reviewed in this paper. Important IWWIP impacts include national inventories of wheat landraces in Turkey, Tajikistan and Uzbekistan, their collection, characterization, evaluation and utilization.

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Winter Wheat Eastern European Regional Yield Trial: Identification of Superior Genotypes and Characterization of Environments

Cited by 16 publications

References 31 publications

Genotype × environment interaction and stability of grain yield and selected quality traits in winter wheat in Central Asia

Genotype × environment interaction and stability of grain yield and selected quality traits in winter wheat in Central Asia

Population Structure and Genetic Diversity Analysis of Germplasm from the Winter Wheat Eastern European Regional Yield Trial (WWEERYT)

International Winter Wheat Improvement Program: history, activities, impact and future

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