Registration of Alfalfa Germplasm Representing Eight Diversity Groups and a Very Fall Dormant Population

Melton, Bill; Currier, Cliff G.; Kimmell, Jeff

doi:10.2135/cropsci1990.0011183x003000030075x

Cited by 9 publications

(21 citation statements)

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“…Fifteen different populations were examined, including nine National Plant Germplasm System (NPGS) Plant Introduction accessions (Melton et al, 1990) representing historically recognized Medicago germplasm sources and six cultivars: The Plant Introduction accessions were PI 536532 (Ladak), PI 536533 (M. varia), PI 536534 (Chilean), PI 536535 (Peruvian), PI 536536 (Indian), PI 536537 (Turkish), PI 536538 (Flemish), PI 536539 (African), and PI 560333 (M. sativa spp. Me2, 5 -TGAGTCCAAACCGGAGC-3 Em1, 5 -GACTGCGTACGAATTAAT-3 Me4, 5 -TGAGTCCAAACCGGACC-3 Em2, 5 -GACTGCGTACGAATTTGC-3…”

Section: Plant Materialsmentioning

confidence: 99%

Estimating genetic relationships among historical sources of alfalfa germplasm and selected cultivars with sequence related amplified polymorphisms

et al. 2006

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Fifteen alfalfa populations consisting of six public cultivars and nine historically recognized sources of alfalfa germplasm in North American cultivars were examined using sequence related amplified polymorphisms (SRAPs). Three bulk DNA samples from each population were evaluated with fourteen different SRAP primer pairs. This resulted in 249 different amplicons, of which over 90% were polymorphic. A dendrogram from the analysis suggests that the public cultivars are quite diverse from all the historical sources of germplasm. The highest mean genetic similarity among the nine original sources of Medicago germplasm was 0.85 between PI 536535 (Peruvian) and 536536 (Indian), while the lowest (0.47) was between PI 560333 (M. falcata) and 536539 (African). The highest mean genetic similarity among the nine original sources of Medicago germplasm and the public alfalfa cultivars was 0.78 between PI 536532 (Ladak) and Vernal, while the lowest (0.59) was between PI 536539 (African) and Oneida. Relationships based on SRAP

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Section: Plant Materialsmentioning

confidence: 99%

Estimating genetic relationships among historical sources of alfalfa germplasm and selected cultivars with sequence related amplified polymorphisms

et al. 2006

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“…sativa Peruvian (PI 536535) were obtained from the Western Regional Plant Introduction Station in Pullman, Washington, USA (Melton et al 1990). Seeds of M. sativa ssp.…”

Section: Plant Materialsmentioning

confidence: 99%

Population structure and combining ability of diverse Medicago sativa germplasms

Maureira

Ortega²,

Campos³

et al. 2004

Theor Appl Genet

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Although unadapted germplasms have been used to improve disease and insect resistance in alfalfa, there has been little effort to use these for improving forage yield. We evaluated genetic diversity and combining ability among two unadapted germplasms ( Medicago sativa ssp. sativa Peruvian and M. sativa ssp. falcata WISFAL) and three Northern U.S. adapted alfalfa cultivars. Population structure analyses indicated that the WISFAL and Peruvian germplasms were genetically distinct from the cultivars, although Peruvian was relatively closer to the cultivars. Peruvian and WISFAL germplasms were intermated to generate a novel hybrid population. This population was crossed to the three cultivars as testers, and the testcross progenies were evaluated for forage yield along with the hybrid population, the original germplasms (Peruvian, WISFAL and cultivars), testcrosses of Peruvian and WISFAL to the three cultivars and a three-way hybrid of the cultivars. The experiment was carried out in the field in Temuco, Chile and Arlington, Wisconsin, USA, and forage was harvested during two seasons. Results from these evaluations showed that hybrids between the Peruvian x WISFAL population and the cultivar testers yielded as much as the cultivar testers. Heterosis was observed between Peruvian and WISFAL, and between these germplasms and the cultivar testers, suggesting that each germplasm may contain different favorable alleles. If Peruvian and WISFAL populations contain alleles at different loci that complement cultivar testers, then combining and enriching these alleles in a single population could result in improved combining ability with alfalfa cultivars.

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“…falcata (hereafter referred to as M. falcata ), Medicago varia , Peruvian, and Turkistan (Barnes et al. , 1977; Melton et al. , 1990; Bingham, 1993).…”

Section: Introductionmentioning

confidence: 99%

“…, 2003) and sequence‐related amplified polymorphisms (SRAPs) (Ariss and Vandemark, 2007) has revealed that M. falcata is the most divergent of these nine sources of germplasm. In the field, M. falcata is very fall dormant and winter hardy (Melton et al. , 1990; Bingham, 1993; Pennycooke et al.…”

Section: Introductionmentioning

confidence: 99%

System responses to long‐term drought and re‐watering of two contrasting alfalfa varieties

et al. 2011

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SUMMARYSystems analysis of two alfalfa varieties, Wisfal (Medicago sativa ssp. falcata var. Wisfal) and Chilean (M. sativa ssp. sativa var. Chilean), with contrasting tolerance/sensitivity to drought revealed common and divergent responses to drought stress. At a qualitative level, molecular, biochemical, and physiological responses to drought stress were similar in the two varieties, indicating that they employ the same strategies to cope with drought. However, quantitative differences in responses at all levels were revealed that may contribute to greater drought tolerance in Wisfal. These included lower stomatal density and conductance in Wisfal; delayed leaf senescence compared with Chilean; greater root growth following a drought episode, and greater accumulation of osmolytes, including raffinose and galactinol, and flavonoid antioxidants in roots and/or shoots of Wisfal. Genes encoding transcription factors and other regulatory proteins, and genes involved in the biosynthesis of osmolytes and (iso)flavonoids were differentially regulated between the two varieties and represent potential targets for improving drought tolerance in alfalfa in the future.

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Registration of Alfalfa Germplasm Representing Eight Diversity Groups and a Very Fall Dormant Population

Cited by 9 publications

References 0 publications

Estimating genetic relationships among historical sources of alfalfa germplasm and selected cultivars with sequence related amplified polymorphisms

Estimating genetic relationships among historical sources of alfalfa germplasm and selected cultivars with sequence related amplified polymorphisms

Population structure and combining ability of diverse Medicago sativa germplasms

System responses to long‐term drought and re‐watering of two contrasting alfalfa varieties

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