Registration of Montana‐2 Perennial ✕Agrotriticum Intermediodurum Khizhnyak

Schulz-Schaeffer, Jürgen; Haller, Suzanne E.

doi:10.2135/cropsci1987.0011183x002700040058x

Cited by 22 publications

(11 citation statements)

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“…Mt-2, a hybrid between durum wheat and Th. intermedium, was released by Montana State University in the USA as a forage crop [44]. Cytological work indicates this line carried about 28 wheatgrass chromosomes in addition to about 26 wheat chromosomes [44][45][46].…”

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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“…intermedium (Schulz-Schaeffer and Haller, 1987). The genomic origin of the alien chromosomes in MT-2 was first established by cytological and banding techniques and it was suggested that it contained S and J genome chromosomes (Schulz-Schaeffer and Friebe, 1992).…”

Section: Utilization Of S Genomic Dna As a Probe In The Identificatiomentioning

confidence: 99%

Detection of alien chromatin introgression from Thinopyrum into wheat using S genomic DNA as a probe – A landmark approach for Thinopyrum genome research

Chen¹

2005

Cytogenet Genome Res

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The introduction of alien genetic variation from the genus Thinopyrum through chromosome engineering into wheat is a valuable and proven technique for wheat improvement. A number of economically important traits have been transferred into wheat as single genes, chromosome arms or entire chromosomes. Successful transfers can be greatly assisted by the precise identification of alien chromatin in the recipient progenies. Chromosome identification and characterization are useful for genetic manipulation and transfer in wheat breeding following chromosome engineering. Genomic in situ hybridization (GISH) using an S genomic DNA probe from the diploid species Pseudoroegneria has proven to be a powerful diagnostic cytogenetic tool for monitoring the transfer of many promising agronomic traits from Thinopyrum. This specific S genomic probe not only allows the direct determination of the chromosome composition in wheat-Thinopyrum hybrids, but also can separate the Th. intermedium chromosomes into the J, J^S and S genomes. The J^S genome, which consists of a modified J genome chromosome distinguished by S genomic sequences of Pseudoroegneria near the centromere and telomere, carries many disease and mite resistance genes. Utilization of this S genomic probe leads to a better understanding of genomic affinities between Thinopyrum and wheat, and provides a molecular cytogenetic marker for monitoring the transfer of alien Thinopyrum agronomic traits into wheat recipient lines.

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“…Montana-2 (MT-2) also was derived from a cross between durum wheat and Th. intermedium and released as a perennial forage wheat (Schulz-Schaeffer and Haller 1987). Chromosome number in this line varied from 24 to 28 wheat chromosomes and 18 to 36 Thinopyrum chromosomes (Jones et al 1999).…”

Section: Transferring Resistance To Soil-borne Pathogens From Wheatgrmentioning

confidence: 99%

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

Li¹,

Conner²,

Murray³

2008

Can. J. Plant Sci.

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Eyespot, Cephalosporium stripe, and common root rot are soil-borne diseases that damage the stem bases, vascular system, subcrown internodes,and roots of wheat. Resistance in wheat to these diseases is insufficient to prevent significant yield loss when disease is severe. The wheatgrasses Thinopyrum intermedium and Th. ponticum are highly resistant to these diseases. Identification of disease-resistant wheat-Thinopyrum partial amphiploids, chromosome addition, substitution, and translocation lines makes them a valuable source of resistance genes for wheat breeding programs. Single chromosomes or chromosome segments containing resistance genes can be transferred into wheat to produce genetic stocks that afford a better understanding of the genetic control of resistance in wheatgrasses and new genetic resources for wheat improvement. Resistance to eyespot in Th. intermedium and Th. ponticum was associated with the homoeologous group 4 chromosomes, whereas resistance to Cephalosporium stripe was controlled by genes located on chromosomes 3 and 6 of Th. ponticum. Despite the fact that some eyespot- and common root rot-resistant wheat-Thinopyrum lines have blue kernels, resistance is not tightly linked to the blue aleurone trait. Key words: Thinopyrum intermedium, Th. ponticum, eyespot, Cephalosporium stripe, common root rot, Oculimacula yallundae, O. acuformis, Cephalosporium gramineum, Bipolaris sorokiniana

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Registration of Montana‐2 Perennial ✕Agrotriticum Intermediodurum Khizhnyak

Cited by 22 publications

References 0 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

Detection of alien chromatin introgression from <i>Thinopyrum</i> into wheat using S genomic DNA as a probe – A landmark approach for <i>Thinopyrum</i> genome research

Resistance to soil-borne diseases of wheat: Contributions from the wheatgrasses Thinopyrum intermedium and Th. ponticum

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