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Rosso, B. S.; Pagano, Elba

doi:10.1023/a:1012005800481

Cited by 8 publications

(1 citation statement)

References 9 publications

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“…The Trifolium family is held in many genebanks globally, comprising of landraces, accessions, breeding lines, wild relatives and commercial cultivars [1,62,77,78]. However, it has been noted that often Trifolium collections are biased towards the two major species, red and white clover.…”

Section: Genetic Resources For Trifolium Improvementmentioning

confidence: 99%

Pedigree analysis of pre-breeding efforts in Trifolium spp. germplasm in New Zealand

et al. 2020

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Background Prebreeding in plants is the activity designed to identify useful characteristics from wild germplasm and its integration in breeding programs. Prebreeding aims to introduce new variation into the populations of a species of interest. Pedigree analysis is a valuable tool for evaluation of variation in genebanks where pedigree maps are used to visualize and describe population structure and variation within these populations. Margot Forde Germplasm Centre (MFGC) is New Zealand’s national forage genebank and holds a collection of ~ 75 species of the genus Trifolium, of which only a dozen have been taken through prebreeding programs. The main objective of this study was to construct pedigree maps and analyse patterns of relatedness for seven minor Trifolium species accessions contained at the MFGC. These species are Trifolium ambiguum, Trifolium arvense, Trifolium dubium, Trifolium hybridum, Trifolium medium, Trifolium subterraneum and the Trifolium repens x Trifolium occidentale interspecific hybrids. We present a history of Trifolium spp. prebreeding in New Zealand and inform breeders of possible alternative forage species to use. Results Pedigree data from accessions introduced between 1950 and 2016 were used and filtered based on breeding activity. Kinship levels among Trifolium spp. remained below 8% and no inbreeding was found. Influential ancestors that contributed largely to populations structure were identified. The Australian cultivar ‘Monaro’ had a strong influence over the whole population of accessions in T. ambiguum. T. subterraneum and T. repens x T. occidentale had the largest number of generations (3). T. ambiguum and T. medium had the highest cumulative kinship across the decades. Conclusions We conclude that there are high levels of diversity in the seven Trifolium spp. studied. However, collection and prebreeding efforts must be strengthened to maximize utilization and bring useful genetic variation.

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Section: Genetic Resources For Trifolium Improvementmentioning

confidence: 99%

Pedigree analysis of pre-breeding efforts in Trifolium spp. germplasm in New Zealand

et al. 2020

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Characterization of Indian clusterbean (Cyamopsis tetragonoloba (L.) Taub.) genotypes using qualitative morphological traits

Manivannan

Anandakumar

Ushakumari

et al. 2015

Genet Resour Crop Evol

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Clusterbean (Cyamopsis tetragonoloba (L.) Taub.) is commonly known as guar, a legume with drought hardiness suited to arid regions remained a neglected and underutilized crop till the shale rush began, of late it got momentum in the international market, and it became one of the most promising industrial crops in India. Seeds of clusterbean are used for extraction of gum which is called guar gum or guaran. Guar gum-a galactomannan polysaccharide-has many uses such as in the oil and petroleum industries (shale energy production or oil fracking), food industries, pharmaceutical industries, paper industries and mining fields. India is the major producer and exporter of guar to the world market. There is a tremendous variability available in Indian clusterbean germplasm, our objective of the present study to characterize and evaluate the Indian clusterbean genotypes using morphological qualitative traits. Forty-two genotypes collected across India were characterized for seven morphological traits: stem type, growth habit, leaflet texture, leaflet margin, leaflet size, flower colour and seed colour across three locations during kharif (rainy season) 2013. Coefficients of variation and principal component analysis revealed variability among the genotypes for the qualitative traits evaluated. PCA analysis showed that genotypes namely PNB, T local, HGS 884, RGC 471, MRSG6 were very different from each other. Cluster analysis separated genotypes into two major groups: one of vegetable genotypes (PNB, T local, M local, HVG2-30 and Amrit 11), and the other of gum genotypes. Among the gum genotypes RGC1066, RGC197 and FS277 formed a distinct sub cluster as they possess single stems (unbranched type), while the genotypes with white flower colour namely RGC936 and RGC471 formed a different sub cluster. The genotype MRSG6 showed brown seed with distinct grade of N 200 B which was distinctly unique and differed from the predominant grey-seeded group Correlation analysis among the traits showed that leaflet texture (pubescence) and leaflet shape (narrow) correlated highly with gum genotypes, on the contrary glabrous broad leaflets were linked with vegetable genotypes.

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Soil bacterial and fungal community structure of a rice monoculture and rice-pasture rotation systems

Maguire

Bordenave

Nieva

et al. 2020

Applied Soil Ecology

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Cited by 8 publications

References 9 publications

Pedigree analysis of pre-breeding efforts in Trifolium spp. germplasm in New Zealand

Pedigree analysis of pre-breeding efforts in Trifolium spp. germplasm in New Zealand

Characterization of Indian clusterbean (Cyamopsis tetragonoloba (L.) Taub.) genotypes using qualitative morphological traits

Soil bacterial and fungal community structure of a rice monoculture and rice-pasture rotation systems

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