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

Atena Shadmehr, Hossein Ramshini, Mehrshad Zeinalabedini, Masoud Parvizi Almani, Mohammad Reza Ghaffari, Ali Izadi Darbandi and Mahmoud Fooladvand
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Atena Shadmehr: Department of Agronomy and Plant Breeding Sciences, Agricultural College of Aburaihan, University of Tehran, Emam reza Blvd, Pakdasht, Tehran 3391653755, Iran
Hossein Ramshini: Department of Agronomy and Plant Breeding Sciences, Agricultural College of Aburaihan, University of Tehran, Emam reza Blvd, Pakdasht, Tehran 3391653755, Iran
Mehrshad Zeinalabedini: Systems Biology Department, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), 31359-33151 Karaj, Iran
Masoud Parvizi Almani: Department of Biotechnology, Cane Development and Sidelong Industrial Research and Education Institute, Golestan Blvd, Khuzestan 1465834581, Iran
Mohammad Reza Ghaffari: Systems Biology Department, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), 31359-33151 Karaj, Iran
Ali Izadi Darbandi: Department of Agronomy and Plant Breeding Sciences, Agricultural College of Aburaihan, University of Tehran, Emam reza Blvd, Pakdasht, Tehran 3391653755, Iran
Mahmoud Fooladvand: Department of Biotechnology, Cane Development and Sidelong Industrial Research and Education Institute, Golestan Blvd, Khuzestan 1465834581, Iran

Agriculture, 2017, vol. 7, issue 7, 1-15

Abstract: 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.

Keywords: breeding collection; cluster analysis; coincidence ratio; diversity; mini-core collection (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2017
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