Identification of Resistance to Rhizoctonia Limb Rot in a Core Collection of Peanut Germ Plasm

Franke, Maximilian; Brenneman, T. B.; Holbrook, C. Corley

doi:10.1094/pdis.1999.83.10.944

Cited by 48 publications

(41 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The core collection is comprised of 831 entries selected at random (1%), at random by country of origin (26%), and by multivariate clustering of phenotypic descriptor information (73%) to minimize repetitiveness in the collection while representing the collection's genetic diversity (16,18). The peanut core collection has been previously evaluated for resistance to tomato spotted wilt virus (TSWV), Rhizoctonia limb rot, late leaf spot, peanut root knot nematode, preharvest aflatoxin contamination, early leaf spot, and Cylindrocladium black rot (2,13,16,17,19). To our knowledge, the core collection has not been previously evaluated for reaction to Sclerotinia blight.…”

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…Hence screening of various germplasm sets, such as core and mini core collection accessions, is important for the identification of resistant sources. Previous researchers have demonstrated that valuable genes in germplasm collections can be effectively identified by using a core or mini core collection (Anderson et al 1996a;Franke et al 1999;Holbrook and Anderson 1995;Holbrook et al 2000a;Isleib et al 1995). Mini core germplasm accessions have been widely screened in several crops, including groundnut, for identifying resistant sources to different biotic (Kusuma et al 2007) and abiotic stresses (Vadez et al 2007).…”

Section: Discussionmentioning

confidence: 99%

Resistance to pre-harvest aflatoxin contamination in ICRISAT’s groundnut mini core collection

Waliyar

Kumar

Diallo³

et al. 2016

Eur J Plant Pathol

View full text Add to dashboard Cite

Aflatoxin contamination in groundnut byAspergillus flavus has assumed global significance and is considered a potential threat to human and animal health. The present study focused on the screening and identification of stable and reliable resistance sources to pre-harvest aflatoxin contamination in ICRISAT's groundnut mini core germplasm accessions. . In total, 31 accessions had less aflatoxin accumulation than the resistant check, 55-437. The seven best accessions, ICGs 13,603, 1415ICGs 13,603, , 14,630, 3584, 5195, 6703 and 6888, over six years (2008ICGs 13,603, -2013 consistently accumulated very low levels of aflatoxin (<4 μg kg −1). These seven accessions could be potential sources for understanding the resistant mechanisms and can be further used in developing resistant cultivars or introgressing resistance in popular released varieties.

show abstract

“…Isleib et al, 1995Isleib et al, 1995Hammond et al, 1997Holbrook et al, 2000a,b Holbrook,1997Holbrook et al, 1998Holbrook et al, 1997Franke et al, 1999Anderson et al, 1996 Reference Table 5. Germplasm evaluations for the peanutcore collection.…”

Section: Evaluation Of the Core Collection Theorymentioning

confidence: 99%

Status of the Arachis Germplasm Collection in the United States

Holbrook

2001

Peanut Science

Self Cite

View full text Add to dashboard Cite

An extensive working collection of Arachis germplasm is maintained by the USDA at the Southern Regional Plant Introduction Sta. in Griffin, GA. Much of this collection is maintained also under long-term seed storage at the Nat. Seed Storage Lab. in Ft. Collins, CO. The working collection consists of 9027 accessions of A. hypogaea and 684 accessions of Arachis species. About half of the A. hypogaea accessions are unimproved landraces collected in the crop's centers of diversity in South America. The other half is comprised of germplasm obtained from countries outside of South America. The U.S. germplasm collection of peanut was the first major germplasm collection to have a working core collection. Research has verified that this core collection can be used to improve the efficiency of germplasm utilization. This has stimulated a great amount of germplasm evaluation work and has resulted in the identification of numerous sources of resistance to several economically significant pathogens. Considerable efforts in the U.S. also have been devoted to the use of wild species of Arachis for sources of resistance to pathogens. Programs are ongoing to introgress high levels of resistance or immunity to early (Cercospora arachidicola Hori) and late (Cercosporidium personatum Berk. & M.A. Curtis) leaf spots, nematodes, and viruses. Genetic resources have been particularly useful in adding disease resistance to peanut cultivars. This has had a significant economic impact on U.S. peanut farmers. The largest impacts have been from the development of cultivars with resistance to Sclerotinia blight (Sclerotinia minor Jagger), the peanut root-knot nematode [Meloidogyne arenaria (Neal) Chitwood race 1], and tomato spotted wilt Tospovirus. Use of these resistant cultivars has an estimated economic impact of more that $200 million annually for U.S. peanut producers.

show abstract

Identification of Resistance to Rhizoctonia Limb Rot in a Core Collection of Peanut Germ Plasm

Cited by 48 publications

References 24 publications

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

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

Resistance to pre-harvest aflatoxin contamination in ICRISAT’s groundnut mini core collection

Status of the Arachis Germplasm Collection in the United States

Contact Info

Product

Resources

About