Availability of Germplasm for Resistance Against Rhizoctonia Spp.

Panella, Lee; Ruppel, E. G.

doi:10.1007/978-94-017-2901-7_47

Cited by 19 publications

(10 citation statements)

References 93 publications

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“…in other plant species generally is rare, and diseases caused by Rhizoctonia spp. usually are managed most effectively with disease management strategies other than planting resistant cultivars, e.g., appropriate crop rotations, fungicide seed treatments (Panella and Ruppel, 1996), fungicide soil treatments (Sharma-Poudyal et al, 2013c), cultural practices (Sharma-Poudyal et al, 2013a), etc.…”

Section: Resultsmentioning

confidence: 99%

Evaluation of Onion Genotypes for Resistance to Stunting Caused by Rhizoctonia solani AG 8

Sharma‐Poudyal¹,

Paulitz²,

Toit

2015

horts

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Thirty-five onion genotypes were evaluated for resistance to stunting caused by Rhizoctonia solani anastomosis group 8 (AG 8) in a growth chamber set at 15 ± 1 8C. The trial was repeated. Resistance to R. solani AG 8 was defined as a lack of significant difference in plant height, root length, and/or total dry biomass between inoculated and noninoculated plants of the same genotype. Plant height was not reduced significantly by R. solani AG 8 for 14 and 7 of the 35 genotypes in Trials 1 and 2, respectively. In Trial 1, plant height reduction caused by R. solani ranged from 24% for the cv. Lasalle to 62% for the experimental line R14882, and in Trial 2 plant height reduction ranged from 22% for the experimental line PX07713218 to 53% for the cv. Montblanc. However, the extent of reduction in plant height caused by R. solani did not differ significantly among genotypes in either trial. Onion root length was not reduced by R. solani AG 8 for 26 and 18 of the 35 genotypes in Trials 1 and 2, respectively. The degree of reduction in root length ranged from 9% (R14889) to 76% (Sterling and SN232) in Trial 1, and 14% (SN325) to 74% (Sterling) in Trial 2. Onion dry biomass was not reduced by R. solani AG 8 for 19 and 7 of the 35 genotypes in Trials 1 and 2, respectively, and ranged from 18% (Elbrus) to 69% (Sterling) in Trial 1, and 29% (SN232) to 79% (Sterling) in Trial 2. The reduction in onion root length and total biomass did not differ significantly among onion genotypes in Trial 1, but differed among genotypes in Trial 2. Of the 35 genotypes evaluated, 3, 16, and 3 demonstrated partial resistance to R. solani AG 8 for plant height, root length, and total biomass, respectively, in both trials. Only four genotypes displayed partial resistance to R. solani AG 8 for at least two of the three growth parameters: plant height, root length, and biomass of PX07713218 were unaffected by the fungus in either trial; and R14885, R14888, and SN307 displayed partial resistance in both trials for two of the three parameters, and in one of the two trials for the third parameter. These four genotypes could be used in onion breeding programs to develop cultivars partially resistant to stunting caused by R. solani AG 8.

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Section: Resultsmentioning

confidence: 99%

Evaluation of Onion Genotypes for Resistance to Stunting Caused by Rhizoctonia solani AG 8

Sharma‐Poudyal¹,

Paulitz²,

Toit

2015

horts

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“…and corn (Zea mays L.) susceptible to AG 2-2 IIIB (Engelkes and Windels, 1996;Ithurrart et al, 2004). For many years, Rhizoctonia-resistant cultivars were not widely used because of their lower potential yield compared to susceptible commercial cultivars (Panella and Ruppel, 1996). Growers typically used high yielding cultivars which were more susceptible to R. solani and relied on fungicides to protect sugar beet fields with a history of the disease.…”

Section: Rhizoctonia Solani Kühn [Teleomorphmentioning

confidence: 99%

Penthiopyrad applied in close proximity to Rhizoctonia solani provided effective disease control in sugar beet

Liu

Khan

2016

Crop Protection

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“…Schweizer (weed scientist), the research had grown to include development of germplasms with resistance to Rhizoctonia crown and root rot, beet curly top (caused by Beet curly top virus), and storage rots. Hecker and Gaskill's early releases, FC701 and FC702 (Table 2), provided the source of resistance in many Rhizoctonia-resistant cultivars in use today (Panella and Ruppel, 1996;Panella, 2005). The CLS resistance breeding program was expanded when G.A.…”

Section: Sugarbeet Breeding Fort Collins Coloradomentioning

confidence: 99%

USDA-ARS Sugarbeet Releases and Breeding Over the Past 20 Years

Panella¹,

Campbell²,

Eujayl³

et al. 2015

JSBR

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In 1995, Devon Doney published a comprehensive list of germplasm releases, breeding lines, and hybrids that had been developed by USDA ARS plant breeders. Doney's summary has been valuable in documenting the wide range of activities that resulted in useful germplasm resources as well as defining actual germplasm that has contributed to a sustained and profitable sugar beet industry. This report includes Doney's summary tables, as well as updates and extends the list of germplasm resources released over the past 20 years. The purpose and focus of the ARS public breeding effort has changed over the last 75 years from developing and releasing open pollinated cultivars and then hybrid cultivars to a focus on pre-breeding of enhanced germplasm. What has not changed is the close collaboration that the ARS public plant breeders have with private industry breeders. This report details the breadth of germplasm enhancement activities of the five ARS locations currently releasing enhanced germplasm (East Lansing, MI; Fargo, ND; Fort Collins, CO; Kimberly, ID; Salinas, CA). It places these activities in a broader context than often communicated in formal germplasm release notices or germplasm registration articles. Recent germplasm releases are freely available from their developers through the USDA-ARS National Plant Germplasm System. Some of the older germplasm described here may not be directly available, however much of this germplasm has been the foundation of current enhanced germplasm and the

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Availability of Germplasm for Resistance Against Rhizoctonia Spp.

Cited by 19 publications

References 93 publications

Evaluation of Onion Genotypes for Resistance to Stunting Caused by Rhizoctonia solani AG 8

Evaluation of Onion Genotypes for Resistance to Stunting Caused by Rhizoctonia solani AG 8

Penthiopyrad applied in close proximity to Rhizoctonia solani provided effective disease control in sugar beet

USDA-ARS Sugarbeet Releases and Breeding Over the Past 20 Years

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