Agropyron and Psathyrostachys

Wang, Richard R.‐C.

doi:10.1007/978-3-642-14228-4_2

Cited by 69 publications

(62 citation statements)

References 174 publications

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“…The different wheatgrass species used in previous breeding originated from Eurasia and were introduced to the USA and China initially for forage production or the transfer of useful genes into annual wheat. None of them was initially grown for high grain yield [6,33]. Recent progress in the domestication of Th.…”

Section: Wheat Derivativesmentioning

confidence: 99%

The Performance of Early-Generation Perennial Winter Cereals at 21 Sites across Four Continents

Hayes¹,

Wang

Newell

et al. 2018

Sustainability

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A network of 21 experiments was established across nine countries on four continents and spanning both hemispheres, to evaluate the relative performance of early generation perennial cereal material derived from wheat, rye, and barley and to inform future breeding strategies. The experimental lines were grown in replicated single rows, and first year production and phenology characteristics as well as yield and persistence for up to three years were monitored. The study showed that the existing experimental material is all relatively short-lived (≤3 years), with environments that are milder in summer and winter generally conferring greater longevity. No pedigree was superior across this diverse network of sites although better performing lines at the higher latitude sites were generally derived from Thinopyrum intermedium. By contrast, at lower latitudes the superior lines were generally derived from Th. ponticum and Th. elongatum parentage. The study observed a poor relationship between year 1 performance and productivity in later years, highlighting the need for perennial cereal material with greater longevity to underpin future experimental evaluation, and the importance for breeding programs to emphasize post-year 1 performance in their selections. Hybrid lines derived from the tetraploid durum wheat generally showed greater longevity than derivatives of hexaploid wheat, highlighting potential for greater use of Triticum turgidum in perennial wheat breeding. We advocate a model in future breeding initiatives that develops perennial cereal genotypes for specific target environments rather than a generic product for one global market. These products may include a diversity of cultivars derived from locally adapted annual and perennial parents. In this scenario the breeding program may have access to only a limited range of adapted perennial grass parents. In other situations, such as at very high latitude environments, perennial crops derived from barley or rye may have a better chance of success than those derived from wheat. In either case, development and selection of the perennial parent for adaptation to local environments would seem fundamental to success.

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Section: Wheat Derivativesmentioning

confidence: 99%

The Performance of Early-Generation Perennial Winter Cereals at 21 Sites across Four Continents

Hayes¹,

Wang

Newell

et al. 2018

Sustainability

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“…This finding could be explained by the previous studies; multivalents were usually observed in this species [Peto, 1936;Wang et al, 1991], and the genome constitution JJJJ s J s was revealed by GISH [Chen et al, 1998]. Although we are still uncertain how these Thinopyrum species evolved, these polyploid species are indeed adapted to wider regions of habitats and survive better in unstable climates than their diploid species [Ehrendorfer, 1980;Dubcovsky and Dvorak, 2007;Wang, 2011]. …”

Section: Discussionmentioning

confidence: 69%

“…The grass tribe Triticeae , including many very important cereal crops such as wheat, rye, and barley and important forage species such as Elymus L. and Agropyron Gaertn, is economically important [Wang, 2011]. Thinopyrum (syn.…”

confidence: 99%

Molecular and Cytological Comparisons of Chromosomes 7el1, 7el2, 7Ee, and 7Ei Derived from Thinopyrum

Guo

Cai

et al. 2015

Cytogenet Genome Res

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Thinopyrum chromosomes 7el₁, 7el₂, 7E^e, and 7Eⁱ, homoeologous to group 7 chromosomes of common wheat (Triticum aestivum), were determined to have many useful agronomical traits for wheat improvement. To analyze the genetic relationships among the 4 Thinopyrum 7E chromosomes, the conserved orthologous set markers, genomic in situ hybridization (GISH), and meiotic chromosome pairing were used in this study. The unweighted pair-group method with arithmetical averages (UPGMA) analysis indicated that 7el₁, derived from T. ponticum, and 7Eⁱ, derived from T. intermedium, were the most closely related. 7el₂, derived from T. ponticum, was relatively distant from the 7el₁-7Eⁱ complex. While 7E^e, derived from T. elongatum, was more distantly related to 7el₁, 7el₂, and 7Eⁱ. This is the first report showing that 7el₁ and 7Eⁱ may be similar, which could be explained by the similar chromosome signal distribution revealed by GISH as well as UPGMA analysis revealed by both molecular markers and the highest frequency of meiotic pairing. The newly developed genome-specific molecular markers may be useful for marker-assisted selection of Lr19, Bdv3, and Fhblop.

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“…Wheatgrass and wildrye grasses are some of the most important grasses in the temperate regions of the world (Wang 2011). These species are important as tertiary gene pools for wheat improvement and also serve as forage crops.…”

Section: Agropyron Speciesmentioning

confidence: 99%

Production and Molecular Cytogenetic Identification of Wheat-Alien Hybrids and Introgression Lines

Molnár-Láng

Molnár

Szakács

et al. 2013

Genomics of Plant Genetic Resources

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Agropyron and Psathyrostachys

Cited by 69 publications

References 174 publications

The Performance of Early-Generation Perennial Winter Cereals at 21 Sites across Four Continents

The Performance of Early-Generation Perennial Winter Cereals at 21 Sites across Four Continents

Molecular and Cytological Comparisons of Chromosomes 7el<sub>1</sub>, 7el<sub>2</sub>, 7E<sup>e</sup>, and 7E<sup>i</sup> Derived from <b><i>Thinopyrum</i></b>

Production and Molecular Cytogenetic Identification of Wheat-Alien Hybrids and Introgression Lines

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