Maximizing Genetic, Morphological, and Geographic Diversity in a Core Collection of Australian Bermudagrass

Jewell, Margaret; Zhou, Yi; Loch, D. S.; Godwin, Ian D.; Lambrides, Christopher J.

doi:10.2135/cropsci2011.09.0497

Cited by 32 publications

(32 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results revealed that our CC preserved the 91% of the SSR alleles observed in the SC. This value is in agreement with other studies that have reported levels between 70 and 97% of SSR allelic retention in core collections (Balfourier et al, 2007;Zhang et al, 2011;Odong et al, 2011;Jewell et al, 2012). All the alleles with P ³ 0.03 and the 99% of alleles with P > 0.01 were captured (Table 3).…”

Section: Validation Of the Core Collectionssupporting

confidence: 92%

“…The first relates to sampling efficiency and aims to find a "point of compromise" between gain of genetic variation and elimination of genetic redundancy in the core collection. This value is in agreement with other studies that have reported levels between 70 and 97% of SSR allelic retention in core collections (Balfourier et al, 2007;Zhang et al, 2011;Odong et al, 2011;Jewell et al, 2012). In the present study, we tried to balance both principles fixing the first one and evaluating the quality of the collection with phenotypic and other different genotypic data than the SSR markers used in the selection of the core.…”

Section: Validation Of the Core Collectionssupporting

confidence: 89%

See 1 more Smart Citation

Creation and Validation of the Spanish Durum Wheat Core Collection

et al. 2013

View full text Add to dashboard Cite

Spanish wheat (Triticum spp.) landraces have a considerable polymorphism, containing many unique alleles, relative to other collections. The existence of a core collection is a favored approach for breeders to efficiently explore novel variation and enhance the use of germplasm. In this study, the Spanish durum wheat (Triticum turgidum L.) core collection (CC) was created using a population structure–based method, grouping accessions by subspecies and allocating the number of genotypes among populations according to the diversity of simple sequence repeat (SSR) markers. The CC of 94 genotypes was established, which accounted for 17% of the accessions in the entire collection. An alternative core collection (CH), with the same number of genotypes per subspecies and maximizing the coverage of SSR alleles, was assembled with the Core Hunter software. The quality of both core collections was compared with a random core collection and evaluated using geographic, agromorphological, and molecular marker data not previously used in the selection of genotypes. Both core collections had a high genetic representativeness, which validated their sampling strategies. Geographic and agromorphological variation, phenotypic correlations, and gliadin alleles of the original collection were more accurately depicted by the CC. Diversity arrays technology (DArT) markers revealed that the CC included genotypes less similar than the CH. Although more SSR alleles were retained by the CH (94%) than by the CC (91%), the results showed that the CC was better than CH for breeding purposes.

show abstract

Section: Validation Of the Core Collectionssupporting

confidence: 92%

Section: Validation Of the Core Collectionssupporting

confidence: 89%

Creation and Validation of the Spanish Durum Wheat Core Collection

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Therefore, MED1 and MED3 have unique characteristics superior to Wintergreen in terms of drought resistance, sod strength and regrowth and are considered valuable germplasm sources for the genetic improvement of bermudagrass for both turf and forage. The uniqueness of this germplasm was recently demonstrated by a molecular analysis of the Australian bermudagrasses carried out by us that showed the Mediterranean grasses MED1 and MED3 fell into a number of distinct haplotypes that distinguished them from all others tested (Jewell et al, 2012a;Jewell et al, 2012b).…”

Section: Mechanisms For Sod Strengthmentioning

confidence: 88%

Associations between drought resistance, regrowth and quality in a perennial C4 grass

Zhou

Lambrides

Fukai

2015

European Journal of Agronomy

View full text Add to dashboard Cite

“…Core collection selection was based on EST-SSR marker diversity, climate, ploidy, morphology, environment type (managed or wild), and performance under a range of abiotic stresses (Jewell et al 2012). Compared to the source germplasm (the germplasm present in the entire source population), the AC contains increased gene diversity (H = 0.18 versus H = 0.14), > 95% of the total number of alleles, and similar proportions of accessions representing specific climates, ploidy levels, and environment type.…”

Section: Plant Materials Est-ssr Genotyping and Core Collection Devementioning

confidence: 99%

Introduction and Adaptation of Cynodon L. C. Rich Species in Australia

Jewell

Anderson

Loch

et al. 2012

Breeding Strategies for Sustainable Forage and Turf Grass Improvement

View full text Add to dashboard Cite

Cynodon L. C. Rich comprises warm season grass species that are valuable as turf and forage in warm climates across the globe. Traditionally, Cynodon breeding programs have aimed to produce varieties with improved turf and forage grass quality characteristics. More recent goals, such as improved abiotic stress tolerance, aim to address challenges associated with climate change. Germplasm collections representing a fraction of the global distribution of Cynodon comprise the plant resource for these breeding programs. We compared a core collection consisting of 116 Australian genotypes with an international core collection of 59 genotypes representing Cynodon's global distribution. Our aims were to determine whether unique genetic diversity exists amongst Australian Cynodon that may enhance international breeding resources. This research will facilitate the incorporation of Australian Cynodon genetic resources, which have expanded and naturalized under harsh Australian climates, into existing germplasm collections.

show abstract

Maximizing Genetic, Morphological, and Geographic Diversity in a Core Collection of Australian Bermudagrass

Abstract: Bermudagrasses {Cynodon spp.) are genetically and morphologically diverse warm-season species that are valuable for turf and forage.

Cited by 32 publications

References 45 publications

Creation and Validation of the Spanish Durum Wheat Core Collection

Creation and Validation of the Spanish Durum Wheat Core Collection

Associations between drought resistance, regrowth and quality in a perennial C4 grass

Introduction and Adaptation of Cynodon L. C. Rich Species in Australia

Contact Info

Product

Resources

About