Characterisation of Erianthus sect. Ripidium and Saccharum germplasm (Andropogoneae - Saccharinae) using RFLP markers |
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Authors: | Pascale Besse C Lynne McIntyre Nils Berding |
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Institution: | (1) CSIRO Division of Tropical Crops and Pastures, 306 Carmody Road, St Lucia, Qld, 4067, Australia;(2) BSES, PO Box 122, Gordonvale, Qld, 4865, Australia |
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Abstract: | A collection of 65 Erianthus Michx. sect. Ripidium Henrard accessions (representing seven accepted species) and 14 Saccharum
L. representatives (S. officinarum L. and S. spontaneum L.) were studied by RFLP analysis using 14 dispersed nuclear single-copy
probes from maize. An intergeneric distance (1–F) of 0.748 was revealed between Erianthus and Saccharum. Within the Erianthus
collection, the greatest distances were found between E. elephantinus Hook f. or E. ravennae (L.) P. Beauv. (the two 2n=20
species), and the rest of the Erianthus collection. The smallest distances were found amongst the E. arundinaceus (Retz.)
Jeswiet clones collected in Indonesia ((1–F)=0.005). In addition, a partition based on the geographical origin and consistent
with the chromosome numbers, ie E. arundinaceus from Indonesia versus E. arundinaceus and E. procerus from India, was revealed.
E. bengalense was intermediate. The study of the Saccharum individuals confirmed the greater variability of S. spontaneum
compared to the so called noble cane, S. officinarum. The 2n=80 S. spontaneum genotypes were shown to be closely related to
S. officinarum. The implication of these results on the involvement of S. spontaneum and Erianthus sect. Ripidium in the origin
of S. officinarum is discussed.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | diversity Erianthus genetic distances RFLP Saccharum sugarcane |
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