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Holland, James B.; Bjørnstad, Åsmund; Frey, K. J.; Gullord, Magne; Wesenberg, D. M.

doi:10.1023/a:1016394208780

Cited by 13 publications

(3 citation statements)

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“…Nevertheless, 52 accessions in the diversity panel surpassed the checks in their grain yield performance that amounted 57.9 dt ha −1 across the two test locations, highlighting the potential value of the genetic resources in the collection at hand. The grain yield of oat is strongly influenced by environmental conditions, resulting in fluctuating yields from year to year [3,41,42]. Therefore, oat breeding for broad adaptation is hard to achieve.…”

Section: Quantitative Genetic Parameters and Trait Correlationsmentioning

confidence: 99%

“…On the other hand, breeding for regional adaptation, e.g., drought tolerance in Southern and Central Europe, and adaptation to day length and fall sowing in Northern and Western Europe, respectively, make long-term financing less difficult despite decreasing acreages and decreasing income from royalties [3]. Recurrent selection was proposed and shown to be effective for breeding for broad adaptation [41,43,44], but had also drawbacks such as a decline in test weight [41]. Therefore, it was suggested to use superior lines/varieties developed for broad adaptation as breeding parents in crosses with locally adapted material for further improvement in overall performance [3,41].…”

Section: Quantitative Genetic Parameters and Trait Correlationsmentioning

confidence: 99%

“…Recurrent selection was proposed and shown to be effective for breeding for broad adaptation [41,43,44], but had also drawbacks such as a decline in test weight [41]. Therefore, it was suggested to use superior lines/varieties developed for broad adaptation as breeding parents in crosses with locally adapted material for further improvement in overall performance [3,41]. For the plant height the check mean was 98 cm, which was surpassed by 130 out of the entire 260 accessions in the collection, and turned to be too tall for the target environments.…”

Section: Quantitative Genetic Parameters and Trait Correlationsmentioning

confidence: 99%

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Diversity and Pre-Breeding Prospects for Local Adaptation in Oat Genetic Resources

et al. 2019

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Acreage of oat (Avena sativa L.) in Europe was steadily declining during the last century due to less breeding progress compared to other cereals. However, oat remains a valuable crop for food and feed, as well as for sustainable crop rotations. To unravel the genetic and phenotypic diversity in oat breeders' germplasm collections, a diversity panel including 260 accessions was investigated by molecular markers and in multi-environment field trials. Due to the large genetic variation in the present diversity panel, high heritabilities were observed for most agro-morphological traits, even for complex traits such as grain yield. Population structure analyses identified three subpopulations which were not straightforwardly related to the geographic origin of the accessions. Accessions from France, Germany, and the Czech Republic in particular were present in approximately equal proportions among all three subpopulations. Breeders' selection after one year of field trials was mainly based on grain yield, grain weight, grading, plant height, and maturity and did not result in a loss of genetic diversity. However, the low number of polymorphic markers must be considered in this case. The present study provides basic knowledge for further oat improvement through the identification of valuable genetic resources which can be exploited in breeding programs as e.g., parental genotypes in crossings.

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Section: Quantitative Genetic Parameters and Trait Correlationsmentioning

confidence: 99%

Section: Quantitative Genetic Parameters and Trait Correlationsmentioning

confidence: 99%

Section: Quantitative Genetic Parameters and Trait Correlationsmentioning

confidence: 99%

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Diversity and Pre-Breeding Prospects for Local Adaptation in Oat Genetic Resources

et al. 2019

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Dedication: Kenneth J. Frey: Oat Breeder, Educator, and Champion of Plant Breeding

Thro

Robertson

2010

Plant Breeding Reviews

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Use of supplementary genotypes in AMMI analysis

et al. 2005

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Improving stability of crop yield in a target production environment is an important breeding objective. It is well known that selection for better stability generally results in lower mean yields and, conversely, that selection for higher mean yields may lead to poorer stability. This paper explores the equivalence between the singular value decomposition used in AMMI analysis and the spectral decomposition used in principal components analysis. This equivalence enables scores of a "supplementary genotype" made up of the highest yield value within each environment to be obtained, and these may serve as the ideal check treatment for selection purposes. These scores are used to (1) display this check in a biplot graph, thereby providing a qualitative comparison with the real genotypes related to their interaction with environments; (2) obtain estimates of the squared distances from the projection of each real genotype to the projection of the "supplementary treatment", thereby allowing conclusions to be made on the yield stability of each real genotype. This procedure was effective in identifying the most stable soybean cultivars in an example shown for illustration.

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Untitled

Cited by 13 publications

References 13 publications

Diversity and Pre-Breeding Prospects for Local Adaptation in Oat Genetic Resources

Diversity and Pre-Breeding Prospects for Local Adaptation in Oat Genetic Resources

Dedication: Kenneth J. Frey: Oat Breeder, Educator, and Champion of Plant Breeding

Use of supplementary genotypes in AMMI analysis

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