European Journal of Biotechnology and Bioscience

European Journal of Biotechnology and Bioscience

ISSN: 2321-9122

Article Icon NAAS Rating: 3.04
Vol. 1, Issue 3 (2013)

D2 analysis in sugarcane

Author(s): V Anbanandan
Abstract: Genetic divergence is an efficient tool for the selection of parents used in hybridization programme. In the present study, twenty sugarcane genotypes consisting of high yielding sugarcane varieties/clones and related species and genera were raised. These were evaluated for ten cane yield and sugar yield and its attributing characters using Mahalanobis D2 analysis, to study the diversity pattern among the genotypes. Based on the analysis, the genotypes were grouped into five clusters. Maximum number of genotypes (11 genotypes) was grouped in cluster I. Cluster II consists of five genotypes followed by cluster III with two genotypes. Cluster IV and V were represented by one genotype each. The maximum inter cluster distance was observed between cluster I and cluster V followed by cluster II and V. The greater distance between the two clusters indicates wider genetic diversity between genotypes. Hence, the genotypes in cluster I viz., Saccharum officinarum cv. Badila, Co 6907, Co 8021, Co. Si 95071, CoC 671, Co 86032, CoC 92061, Co G 93076, Co 99012 and Co 99008, cluster II viz., Co 8371, Co 99004, Co 7219 and CoC 90063 had wider diversity with Erianthus arundinaceum in cluster V and these lines may be utilized in further breeding programme. The intra cluster distance was maximum in cluster II (1060.89) followed by cluster I (1050.00) indicates hybridization involving genotypes within the same clusters may result in good cross combinations. Among the ten characters studied, maximum contribution was made by sugar yield (50.00%) followed by brix per cent (20.00%), cane yield (8.42%) and cane weight (5.26%). Hence, these characters should be given importance during hybridization and selection in the segregating population.
Pages: 59-61  |  276 Views  94 Downloads
European Journal of Biotechnology and Bioscience
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