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GrainGenes Reference Report: CRS-35-1195

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Reference	CRS-35-1195
Title	Genetic base of U.S. mainland sugarcane
Journal	Crop Science
Year	1995
Volume	35
Pages	1195-1199
Author	Deren C
Abstract	Evaluations of the genetic diversity of many crop breeding populations have been conducted in response to concern over their genetic vulnerability to diseases and insects The purpose of this study was to evaluate the genetic diversity of US mainland sugarcane (Saccharum L spp. cultivars. Eighty-eight cultivars from Florida, Louisiana, and Texas were traced back to seventeen original ancestors. Coefficients of parentage (r X 100) were calculated among cultivar and ancestors. Cytoplasmic genetic sources were also traced. Ten ancestors contributed germplasm to 90% or more of Florida cultivars whereas only two ancestors contributed germplasm to 90% or more of Louisiana cultivars. Mean coefficients of parentage for current commercial cultivars in Florida ranged from 8.2 to 18.6. For Louisiana commercial clones, coefficients of parentage ranged from 16.3 to 25.8. Cytoplasmic sources traced to three S. officinarum L. clones. The ancestor Black Cheribon (S. officinarum) contributed the greatest amount of nuclear and cytoplasmic germplasm. In comparison with many crops, sugarcane is probably relatively well buffered genetically.
Keyword	ancestry [ Show all 12 ]

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