Indian Journal of Plant Genetic Resources
Year : 1997, Volume : 10, Issue : 1
First page : ( 11) Last page : ( 15)
Print ISSN : 0971-8184.

Genetic divergence studies in wheat germplasm using non-hierarchical euclidean cluster analysis

Garg D.K.¹, Gautam P.L.

Deptt. of Plant Breeding, G.B.P. University of Agriculture & Tech., Pantnagar 263 145 (Uttar Pradesh).

¹Present address: NARP, Deptt. of Plant Physiology, S. K. N. College of Agriculture, Jobner 303 329 (Jaipur).

Abstract

Four hundred and forty-one wheat germplasm collections including important varieties and exotic and indigenous accessions were evaluated for 15 metric characters using non-hierarchical Euclidean cluster analysis. All the genotypes were grouped into 12 different clusters showing existence of high genetic diversity in the material. The genotypes of heterogeneous origin were grouped in the same cluster indicating non-parallelism between genetic and geographic diversity. The intra-cluster distance was maximum (2.90) in cluster II and minimum (2.10) in cluster V. Cluster IV and X were highly diverse (6.66) from each other. Genotypes of cluster IV were the highest yielders (X = 48.57 g, C.V. 23.80%). Several collections which may serve as good genetic donors for high spikelet fertility, dwarfness, long ear, bold grain, high number of ears and good source for multiple resistance against rusts and powdery mildew were identified.

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Keywords

Wheat, germplasm, divergence, cluster analysis.

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