International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 1
First page : (210) Last page : (218)
Article doi: http://dx.doi.org/10.18782/2320-7051.4085
Genetic Divergence of Sugarcane under Waterlogging Conditions
Bal Krishna1*, Dharam Nath Kamat1, Juli Kumari2 and Divya Prakash1
1Department of Plant Breeding and Genetics, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar 848 125, India
2Department of Botany, Tilka Manjhi Bhagalpur University, Tatarpur, Bhagalpur, Bihar 812 007, India
*Corresponding Author E-mail: bk151219@gmail.com
Received: 17.06.2017 | Revised: 29.07.2017 | Accepted: 4.08.2017
ABSTRACT
Genetic divergence for twenty-five traits were studied in sixteen phenotypically diverse midlate maturing sugarcane genotypes, which were planted in RBD in three replications at D. R.P.C.A.U. Research Farm, Pusa, Bihar during spring season 2016-2017. The study indicated the presence of sufficient amount of diversity among the genotypes under study. The clustering of 16 clones into five clusters for morphological and quality characters revealed divergence between the genotypes. Five clusters were formed on grouping of clones based on Mahalanobis D2 distances. The result indicated that, higher estimate of inter cluster distance between cluster III and IV indicated wide genetic diversity between these two groups. Thus, genotypes with high index for specific characters that fall into different clusters could be intercrossed to have maximum hybrid vigor and good number of useful segregants while lower inter cluster distance was noticed between cluster IV and V. This might indicate the close relationship and likelihood between genotype groups within these clusters. The results also indicated that cluster III, IV and V involved highly diverse genotypes, can be chosen for recombination breeding and isolating desirable genotypes combinations. Cluster III (CoP11440) was found superior for quality characters. Among five clusters, cluster II was the largest with nine genotypes followed by cluster I with four genotypes. The study also revealed that, the cluster II (BO155, CoP2061, CoP14439, CoP15439, BO154, CoP12438, CoP09437, CoP14438 and CoP15441) performed superior for sugar yield and cane yield under waterlogging condition. Hence these genotypes can be selected and advanced through further breeding programme.
Key words: Sugarcane, Waterlogging, Genetic divergence, Mahalanobis’s D2 statistics, Cluster distanceFull Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Krishna, B., Kamat, D.N., Kumari, J. and Prakash, D., Genetic Divergence of Sugarcane under Waterlogging Conditions, Int. J. Pure App. Biosci.6(1): 210-218 (2018). doi: http://dx.doi.org/10.18782/2320-7051.4085
