Registration of ‘Tamrun 96’ Peanut

Smith, O. D.; Simpson, C. E.; Black, M. C.; Besler, Brent A.

doi:10.2135/cropsci1998.0011183x003800050054x

Cited by 38 publications

(31 citation statements)

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“…An accession of A. hypogaea (US 224) showed higher resistance than the others, also being located in the "a" group. It is interesting to mention that this peanut accession, from Rondonia State, in Brazil, which also presented some resistance to C. arachidicola, is the source of resistance to Tomato Spotted Wilt Virus/TSWV incorporated in the Tamrun 96 cultivar (Smith et al, 1998). The "b" group only includes one accession of A. stenosperma and six of A. hypogaea.…”

Section: Cercosporidium Personatummentioning

confidence: 99%

Characterization of rust, early and late leaf spot resistance in wild and cultivated peanut germplasm

Fávero

Moraes

Garcia³

et al. 2009

Sci. agric. (Piracicaba, Braz.)

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Groundnut (Arachis hypogaea) has an AB genome and is one of the most important oil crops in the world. The main constraints of crop management in Brazil are fungal diseases. Several species of the genus Arachis are resistant to pests and diseases. The objective of our experiments was to identify wild species belonging to the taxonomic section Arachis with either A or B (or "non-A") genomes that are resistant to early leaf spot (Cercospora arachidicola), late leaf spot (Cercosporidium personatum) and rust (Puccinia arachidis). For the identification of genotypes resistant to fungal diseases, bioassays with detached leaves were done in laboratory conditions, with artificial inoculation, a controlled temperature of 25°C and a photoperiod of 10 h light/14 h dark, for 20-42 days, depending on the fungi species. Most of the accessions of wild species were more resistant than accessions of A. hypogaea for one, two or all three fungi species studied. Arachis monticola, considered to be a possible tetraploid ancestor or a derivative of A. hypogaea, was also more susceptible to Cercosporidium personatum and Puccinia arachidis, as compared to most of the wild species. Therefore, wild germplasm accessions of both genome types are available to be used for the introgression of resistance genes against three fungal diseases of peanut. Key words: Puccinia arachidis, Cercospora arachidicola, Cercosporidium personatum, groundnut, Arachis spp. CARACTERIZAÇÃO DA RESISTÊNCIA À FERRUGEM, MANCHA PRETA E MANCHA CASTANHA EM GERMOPLASMA SILVESTRE E CULTIVADO DE AMENDOIMRESUMO: O amendoim (Arachis hypogaea) possui genoma AB e é uma das mais importantes culturas oleaginosas em todo o mundo. Os principais problemas da cultura no Brasil são as doenças fúngicas. Várias espécies do gênero Arachis são resistentes a pragas e doenças. Este trabalho visou a identificar espécies silvestres pertencentes à seção Arachis associadas aos genomas A ou B (ou "não-A") do amendoim que são resistentes à mancha castanha (Cercospora arachidicola), mancha preta (Cercosporidium personatum) e ferrugem (Puccinia arachidis). Para a identificação de genótipos resistentes a doenças fúngicas, bioensaios utilizando folhas destacadas foram realizados em condições de laboratório, com inoculação artificial, temperatura controlada de 25°C e fotoperíodo de 10h luz/14h escuro, por 20-42 dias, de acordo com a espécie fúngica. A maioria dos acessos das espécies silvestres foram mais resistentes que os acessos de A. hypogaea para uma, duas ou todas as espécies fúngicas estudadas. Arachis monticola, considerada como o possível ancestral tetraplóide ou como um derivativo de A. hypogaea, também mostrou-se mais suscetível a Cercosporidium personatum e Puccinia arachidis, quando comparado à maioria das espécies silvestres. Portanto, acessos de germoplasma silvestre com genoma A ou B estão disponíveis para serem utilizados na introgressão de genes de resistência a doenças fúngicas no amendoim.

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Section: Cercosporidium Personatummentioning

confidence: 99%

Characterization of rust, early and late leaf spot resistance in wild and cultivated peanut germplasm

Fávero

Moraes

Garcia³

et al. 2009

Sci. agric. (Piracicaba, Braz.)

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“…While Southwest Runner is partially resistant to Sclerotinia blight, it was never accepted by the shelling industry because of its small seed size. Alternatively, runner cultivars from the Texas A&M breeding program such as Tamrun 96 (33), Tamrun 98 (30), Tamrun OL01 (28), and Tamrun OL02 (29) have been released and grown in problem fields. The level of partial resistance in these cultivars is generally intermediate between the susceptible cultivars Florunner and Okrun (3) and the resistant cultivars Tamspan 90 and Southwest Runner, and is not sufficient to preclude the need for fungicide applications (8,10).…”

mentioning

confidence: 99%

Reaction of the Core Collection of Peanut Germplasm to Sclerotinia Blight and Pepper Spot1

Damicone¹,

Holbrook²,

Smith³

et al. 2010

Peanut Science

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In 2001, entries from the peanut core collection, a subset of the USDA peanut germplasm collection, were planted in non-replicated plots in a field with a history of Sclerotinia blight caused by Sclerotinia minor. Variability existed among entries for reaction to Sclerotinia blight. Of the 744 entries evaluated, 11% had no disease, nearly 30% had ,10% disease incidence, and only 21% had 50% disease incidence or more. Most of the resistant entries had an upright growth habit and were in early and mid-maturity groups. Many of the early maturing entries were susceptible to the foliar disease pepper spot which occurred throughout the study. Entries were selected for further evaluation in replicated plots based on a nil to low (,10% 208, 128, 804, 582, and 273 combined resistance to Sclerotinia blight, pepper spot, and web blotch with less than erect growth habits. Entry 103 had good Sclerotinia blight resistance and yield, but an upright growth habit. Entry 92 had an upright growth habit and low yield, but good Sclerotinia blight resistance. Entries 92 and 103 had upright growth habits but were among the best entries for resistant to pepper spot and web blotch. Entries 426, 184, and 562 were upright and susceptible to pepper spot, but had resistance to web blotch and the best resistance to Sclerotinia blight. These entries appear to be useful sources of resistance to Sclerotinia blight for breeding programs and for increasing the probability of finding additional sources of resistance in clusters of germplasm identified within the entire USDA collection.

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“…Six runner peanut genotypes were used to compare the three inoculation methods: the resistant cultivar Georgia-03L (Branch, 2004;Woodward et al, 2006) and breeding line ARSOK-R35 Chamberlin, 2014, 2015); moderately resistant cultivars Red River Runner (Melouk et al, 2012) and Tamrun 96 (Smith et al, 1998); and susceptible cultivars Okrun (Banks et al, 1989) and Tamrun OL02 (Simpson et al, 2006). Two seeds each were planted into a commercial potting soil (Metro-Mix 350, Sun Gro Horticulture, Agawam, MA) in 11 cm diam.…”

Section: Methodsmentioning

confidence: 99%

Three Inoculation Methods for Evaluating Sclerotinia Blight Resistance in Peanut

2016

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Laboratory-based assays for screening germplasm for resistance to Sclerotinia blight in peanuts can be conducted year-round, and thus may accelerate progress in breeding for resistant plants. Three previously proposed inoculation methods (using main stems of intact plants, detached main stems, or detached leaflets) were compared on six peanut genotypes known to represent range of resistance to Sclerotinia blight in the field or laboratory. The intact plant and detached main stem assays identified the most resistant and susceptible genotypes, but different results were obtained from either assay with Red River Runner, a cultivar with intermediate resistance to Sclerotinia blight. No differences among genotypes were observed with the detached leaflet assay. The sensitivity ratio was used to compare the three inoculation methods and identified the intact plant assay as the method with the smallest error variance. These results help identify the most efficient method for assaying physiological resistance to Sclerotinia blight in peanut.

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Registration of ‘Tamrun 96’ Peanut

Cited by 38 publications

References 0 publications

Characterization of rust, early and late leaf spot resistance in wild and cultivated peanut germplasm

Characterization of rust, early and late leaf spot resistance in wild and cultivated peanut germplasm

Reaction of the Core Collection of Peanut Germplasm to Sclerotinia Blight and Pepper Spot1

Three Inoculation Methods for Evaluating Sclerotinia Blight Resistance in Peanut

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