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Title: Promoting Utilization of Saccharum spp. Genetic Resources through Genetic Diversity Analysis and Core Collection Construction

Journal Article · · PLoS ONE
 [1];  [2];  [1];  [1];  [3];  [1];  [4];  [5];  [3];  [5];  [1];  [5];  [6]
  1. Univ. of Florida, Gainesville, FL (United States). Agronomy Dept.
  2. Univ. of Florida, Gainesville, FL (United States). Agronomy Dept.; Dezhou Univ., Shandong (China). College of Life Sciences
  3. US Dept. of Agriculture (USDA), Miami, FL (United States). Agricultural Research Service (ARS). Subtropical Horticulture Research Station
  4. Univ. of Florida, Belle Glade, FL (United States). Everglades Research and Education Center
  5. US Dept. of Agriculture (USDA), Canal Point, FL (United States). Agricultural Research Service (ARS). Sugarcane Field Station
  6. Univ. of Florida, Gainesville, FL (United States). Agronomy Dept.; Univ. of Florida, Gainesville, FL (United States). Plant Molecular and Biology Program. Genetics Inst.; Fujian Agriculture and Forestry Univ., Fujian (China). FAFU and UIUC-SIB Joint Center for Genomics and Biotechnology

Sugarcane (Saccharum spp.) and other members of Saccharum spp. are attractive biofuel feedstocks. One of the two World Collections of Sugarcane and Related Grasses (WCSRG) is in Miami, FL. This WCSRG has 1002 accessions, presumably with valuable alleles for biomass, other important agronomic traits, and stress resistance. However, the WCSRG has not been fully exploited by breeders due to its lack of characterization and unmanageable population. In order to optimize the use of this genetic resource, we aim to 1) genotypically evaluate all the 1002 accessions to understand its genetic diversity and population structure and 2) form a core collection, which captures most of the genetic diversity in the WCSRG. We screened 36 microsatellite markers on 1002 genotypes and recorded 209 alleles. Genetic diversity of the WCSRG ranged from 0 to 0.5 with an average of 0.304. The population structure analysis and principal coordinate analysis revealed three clusters with all S. spontaneum in one cluster, S. officinarum and S. hybrids in the second cluster and mostly non-Saccharum spp. in the third cluster. A core collection of 300 accessions was identified which captured the maximum genetic diversity of the entire WCSRG which can be further exploited for sugarcane and energy cane breeding. Sugarcane and energy cane breeders can effectively utilize this core collection for cultivar improvement. Further, the core collection can provide resources for forming an association panel to evaluate the traits of agronomic and commercial importance.

Research Organization:
Univ. of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
FG02-00ER41132
OSTI ID:
1627736
Journal Information:
PLoS ONE, Vol. 9, Issue 10; ISSN 1932-6203
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

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Natural Allelic Variations in Highly Polyploidy Saccharum Complex journal June 2016
Cell wall metabolism and hexose allocation contribute to biomass accumulation in high yielding extreme segregants of a Saccharum interspecific F2 population journal October 2017
Fiber composition of a diversity panel of the world collection of sugarcane (Saccharum spp.) and related grasses journal December 2017
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Genetic Diversity Analysis of Sugarcane Germplasm Based on Fluorescence-Labeled Simple Sequence Repeat Markers and a Capillary Electrophoresis-based Genotyping Platform journal August 2015
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