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Agriculture 2017, 7(7), 55;

Phenotypic Variability Assessment of Sugarcane Germplasm (Saccharum officinarum L.) and Extraction of an Applied Mini-Core Collection

Department of Agronomy and Plant Breeding Sciences, Agricultural College of Aburaihan, University of Tehran, Emam reza Blvd, Pakdasht, Tehran 3391653755, Iran
Systems Biology Department, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), 31359-33151 Karaj, Iran
Department of Biotechnology, Cane Development and Sidelong Industrial Research and Education Institute, Golestan Blvd, Khuzestan 1465834581, Iran
Authors to whom correspondence should be addressed.
Academic Editors: Eva Johansson and Les Copeland
Received: 30 April 2017 / Revised: 21 June 2017 / Accepted: 26 June 2017 / Published: 6 July 2017
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The sugarcane germplasm collection located in Khuzestan, Iran, is one of the most important genetic resources with valuable accessions from different continents. However, this collection has not been properly used by breeders due to the extremely large population. The aim of this study was to phenotypically characterize the sugarcane germplasm and form a mini-core collection. Hence, 13 morphological traits were evaluated on 253 accessions. The primary germplasm was grouped into 10 clusters based on partial repeated bisection (RB) data, where the smallest cluster contained three accessions from two breeding centres (USA and Cuba). Using principal component analysis (PCA), the first two PCs (principal component) explained 59.5% of the total variation. A mini-core of 21 accessions was created by using the maximization strategy, with a low mean difference percentage (MD = 2.31%) and large coincidence rate of range (CR = 93.96%). The sugarcane mini-core represented the major diversity of the primary collection. The means and medians between the mini-core and the primary collection did not differ significantly. Accessions with high sugar and cane yield, originating from the USA, Cuba, Argentina, and South Africa, were in the mini-core collection. In this paper, we established, for the first time, an applied mini-core collection in sugarcane germplasm. The mini-core collection, as a breeding collection, is a highly suitable, manageable, and efficient subset for the enhanced use of sugarcane germplasm in breeding programs. View Full-Text
Keywords: breeding collection; cluster analysis; coincidence ratio; diversity; mini-core collection breeding collection; cluster analysis; coincidence ratio; diversity; mini-core collection

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Shadmehr, A.; Ramshini, H.; Zeinalabedini, M.; Parvizi Almani, M.; Ghaffari, M.R.; Izadi Darbandi, A.; Fooladvand, M. Phenotypic Variability Assessment of Sugarcane Germplasm (Saccharum officinarum L.) and Extraction of an Applied Mini-Core Collection. Agriculture 2017, 7, 55.

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