Climate change at winter wheat breeding sites in central Asia, eastern Europe, and USA, and implications for breeding

Morgounov, Alexey; Haun, Stefan; Láng, László; Martynov, S. P.; Sonder, Kai

doi:10.1007/s10681-013-0968-1

Cited by 20 publications

(18 citation statements)

References 19 publications

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“…In semi-arid areas of the world with a Mediterranean-type climate, high temperature and drought stress are among the two most important environmental factors influencing yield processes when wheat enters the grain-filling period. In south-east Europe, which is subject to Mediterranean weather patterns, there is a tendency of rising air temperature in the critical winter wheat growing period (April–June) to be combined with decreases in precipitation (Morgounov et al , 2013). Other authors have also indicated that the prevalence and intensity of drought and heat stress during reproductive processes (e.g.…”

Section: Introductionmentioning

confidence: 99%

Responses of Wheat Plants Under Post-Anthesis Stress Induced by Defoliation: I. Contribution of Agro-Physiological Traits to Grain Yield

et al. 2015

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When water stress develops post-anthesis, wheat (Triticum aestivum L.) plants have to rely increasingly on remobilization of previously stored assimilates to maintain grain filling. In two-year field trials, we studied more than 20 agronomic and developmental traits in 61 wheat genotypes (27 F4:5 families, 17 parents used for the crosses and 17 standards), comparing plants that were defoliated (DP) by cutting off all leaf blades 10 days after anthesis with intact control plants (CP). Estimated contributions of stem and sheath assimilate reserves to grain weight/spike were from 10-54% and from 24-84% in CP and DP plants, respectively. Stem-related traits were among key traits determining stem reserve contribution (SRC). The most important genetic variables in differentiating genotypes for stress tolerance were biomass/stem, stem reserves mobilization efficiency and grain filling rate (GFR). Balance among traits related to yield maintenance in DP were more important than their high values. In general F4:5 families (FAM), that had been crossed to combine typical breeding traits such as biomass and yield components, showed better tolerance under moderate stress than standards and parents.

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Section: Introductionmentioning

confidence: 99%

Responses of Wheat Plants Under Post-Anthesis Stress Induced by Defoliation: I. Contribution of Agro-Physiological Traits to Grain Yield

et al. 2015

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“…The direction of the change was estimated by calculating the regression slope. A similar approach was previously used by Morgounov et al [ 24 ] who analyzed climate change at 35 global winter wheat sites.…”

Section: Methodsmentioning

confidence: 99%

Effect of climate change on spring wheat yields in North America and Eurasia in 1981-2015 and implications for breeding

Morgounov¹,

Sonder

Абугалиева

et al. 2018

PLoS ONE

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Wheat yield dynamic in Canada, USA, Russia and Kazakhstan from 1981 till 2015 was related to air temperature and precipitation during wheat season to evaluate the effects of climate change. The study used yield data from the provinces, states and regions and average yield from 19 spring wheat breeding/research sites. Both at production and research sites grain yield in Eurasia was two times lower compared to North America. The yearly variations in grain yield in North America and Eurasia did not correlate suggesting that higher yield in one region was normally associated with lower yield in another region. Minimum and maximum air temperature during the wheat growing season (April-August) had tendency to increase. While precipitation in April-August increased in North American sites from 289 mm in 1981–1990 to 338 mm in 2006–2015 it remained constant and low at Eurasian sites (230 and 238 mm, respectively). High temperature in June and July negatively affected grain yield in most of the sites at both continents. Climatic changes resulted in substantial changes in the dates of planting and harvesting normally leading to extension of growing season. Longer planting-harvesting period was positively associated with the grain yield for most of the locations. The climatic changes since 1981 and spring wheat responses suggest several implications for breeding. Gradual warming extends the wheat growing season and new varieties need to match this to utilize their potential. Higher rainfall during the wheat season, especially in North America, will require varieties with higher yield potential responding to moisture availability. June is a critical month for spring wheat in both regions due to the significant negative correlation of grain yield with maximum temperature and positive correlation with precipitation. Breeding for adaptation to higher temperatures during this period is an important strategy to increase yield.

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“…Reducing yield variability has been one of the most important objectives for wheat producers and is expected to remain at the forefront of the wheat breeding research agenda, since climate change is expected to greatly exacerbate yield variability [14,15]. Wheat breeding will hence need to explicitly address future climatic forecasts in developing varieties to better tolerate hotter, drier conditions that are expected to prevail well into the 21st century [5,8,14,[16][17][18][19][20][21]. Oklahoma's wheat planted acreage has decreased substantially since 1990 ( Figure 2).…”

Section: Wheat Yield Planted Acreage and Productionmentioning

confidence: 99%

Economics of Wheat Breeding Strategies: Focusing on Oklahoma Hard Red Winter Wheat

2020

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Wheat breeding continues to be an important component of agricultural innovations in the Great Plains region of the US. This paper reviews Oklahoma’s wheat breeding program over the past several decades with an emphasis on the economic aspects and planning of future breeding strategies. Over the past century, Oklahoma’s wheat yields have increased but the productivity gains have been offset in part due to increased yield variability. The shift to improved wheat varieties has resulted in increased susceptibility to plant disease and pest pressure. While a few varieties introduced over the past few decades have dominated the wheat seed market, recent trends indicate producers are adopting a more diverse range of wheat varieties. Producers’ concerns have expanded beyond demands for high yielding varieties to include more market oriented needs to increase protein content and test weight. This paper identifies several key policy instruments that Oklahoma stakeholders and policy makers should consider when planning future breeding strategies. A critical need is to assist Oklahoma producers in adapting to climate change by developing drought and heat resistant wheat varieties. Marketing new varieties would be improved and revenue increased if more innovative pricing structures were adopted to better align producers’ willingness to pay with seed development costs, which could then be re-invested in breeding. Research budgets, which have remained stagnant in real terms, will need to be increased to adequately address producers’ needs into the 21st century.

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Climate change at winter wheat breeding sites in central Asia, eastern Europe, and USA, and implications for breeding

Cited by 20 publications

References 19 publications

Responses of Wheat Plants Under Post-Anthesis Stress Induced by Defoliation: I. Contribution of Agro-Physiological Traits to Grain Yield

Responses of Wheat Plants Under Post-Anthesis Stress Induced by Defoliation: I. Contribution of Agro-Physiological Traits to Grain Yield

Effect of climate change on spring wheat yields in North America and Eurasia in 1981-2015 and implications for breeding

Economics of Wheat Breeding Strategies: Focusing on Oklahoma Hard Red Winter Wheat

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