Genotypic Variation for Resistance to Phytophthora cactorum in a California Strawberry Breeding Population
نویسندگان
چکیده
منابع مشابه
Components of genetic variation for resistance of strawberry to Phytophthora cactorum estimated using segregating seedling populations and their parent genotypes
Strawberry ( Fragaria × ananassa ) seedlings from 50 bi-parental crosses among 20 elite genotypes were evaluated for resistance to Phytophthora cactorum after artificial inoculation. Plots of seedlings or runner plants were rated using a disease severity score and the percentage of stunted plants per plot. The distribution of cross means for percentages of plants with stunting was highly skewed...
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Understanding the genetic architecture of traits in breeding programs can be critical for making genetic progress. Important factors include the number of loci controlling a trait, allele frequencies at those loci, and allele effects in breeding germplasm. To this end, multiparental populations offer many advantages for quantitative trait locus (QTL) analyses compared to biparental populations....
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R. G. Bhat, Department of Plant Pathology, University of California, Davis 95616; P. M. Colowit and T. H. Tai, United States Department of Agriculture–Agricultural Research Service (USDA-ARS), Crops Pathology and Genetics Research Unit (CPGRU), Department of Plant Sciences, University of California, Davis 95616; M. K. Aradhya, USDA-ARS National Clonal Germplasm Repository, University of Califor...
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Two methods to induce a symptomless infection of crown rot (Phytophthora cactorum) in stolons of three strawberry (Fragaria×ananassa) cultivars were evaluated. Spraying a 10−4 ml zoospore suspension was the most effective method, producing a mean infection rate of 12%. Meristem cultures were subsequently established from all of the inoculated stolons and tested eight weeks later for the presenc...
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Crown rot (Phytophthora cactorum) causes significant economic losses in strawberry production. The best control strategy would be to use resistant cultivars, but polygenically inherited resistance makes the breeding of the garden strawberry (Fragaria × ananassa) challenging. The diploid wild strawberry Fragaria vesca Hawaii 4 genotype was shown previously to have resistance against crown rot. T...
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ژورنال
عنوان ژورنال: Journal of the American Society for Horticultural Science
سال: 2006
ISSN: 0003-1062,2327-9788
DOI: 10.21273/jashs.131.5.687