Full TGIF Record # 71146
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Bonos, S. A.; Meyer, W. A.
Author Affiliation:Rutgers University
Title:Evaluation and heritability of dollar spot resistance in creeping bentgrass genotypes
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Meeting Info.:Minneapolis, MN: November 5-9, 2000
Source:2000 Annual Meeting Abstracts [ASA/CSSA/SSSA]. 2000, p. 161.
# of Pages:1
Publishing Information:[Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
Keywords:TIC Keywords: Genetic resistance; Dollar spot; Sclerotinia homoeocarpa; Fungus control; Chemical control; Biological control; Cultural control; Disease resistance; Breeding; Agrostis stolonifera; Herbicide evaluation; Inheritance; Genotypes
Abstract/Contents:"Genetic resistance to dollar spot disease (Sclerotinia homoeocarpa F.T. Bennet) would be a promising alternative to chemical, cultural and bio-control methods. Heritable variation in disease resistance is the basis for breeding disease resistant varieties. The objective of this study was to (i) evaluate the response of 500 genotypes to the fungus S. homoeocarpa, in two locations, (ii) determine broad sense heritability of dollar spot in creeping bentgrass through replicated clonal material (iii) determine narrow sense heritability based on parent progeny regression. In the spring of 1998, 500 genotypes of creeping bentgrass, collected from New Jersey, New York, and Arizona, were arranged in a randomized complete block design with 6 replications in two locations. Five isolates of S. homoeocarpa were used to inoculate the field studies. Dollar spot resistance was evaluated weekly using a 1 to 9 scale. Ten resistant and ten susceptible genotypes were evaluated for lesion development throughout the growing season. Controlled crosses of two resistant and two susceptible genotypes were made to determine narrow sense heritability. Approximately 12 genotypes out of 500 maintained adequate resistance to dollar spot over 2 years and 2 locations. Genotype responses and heritability of dollar spot resistance will be discussed."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bonos, S. A., and W. A. Meyer. 2000. Evaluation and heritability of dollar spot resistance in creeping bentgrass genotypes. Annu. Meet. Abstr. p. 161.
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