DUS CHARACTERIZATION AND GENETIC STUDIES IN ROSE (Rosa hybrida)
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Date
2019-09
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UHF,NAUNI
Abstract
ABSTRACTDUS
The present investigation entitled “S Characterization DUS and Genetic studies in Rose (Rosa
hybrida)” was carried out at experimental farm of Department of Floriculture and Landscape
Architecture, Dr YS Parmar University of Horticulture and Forestry, Nauni, Solan (HP) during 2017
to 2018. The experiment was laid out in a RBD with three replications and data was recorded for two
years.Forty five diverse genotypes were evaluated for various growth and flowering parameters to
assess the extent of variability, heritability, genetic divergence and the morphological characterization
of these genotypes. Wide and significant variations for all the parameters were observed among the
different miniature rose genotypes. Among the tested genotypes Royal Midnette had very high
number of flowering stem per plant and genotype Dazzler had maximum number of flower per bunch.
Maximum duration of flowering was found in MaigoldSweet Dream. Maximum plant spread was in
Wild Fire thus is suitable for bedding purpose.Genetic diversity among 45 genotypes was
grouped into 19 clusters in which Maximum number of 14 genotypes was accommodated in
cluster 2, followed by cluster 1 accommodating 8 genotypes, cluster 3 having 7 genotypes,
whereas, rest of the clusters consisted of only one genotype each.The study generated
information regarding Distinctness Uniformity and stability as well as the relationship between 45
different genotypes of rose on the basis of DUS descriptor.On the basis of DUS descriptors 45
genotypes were grouped into 7 distinct clusters and the divergence contribution among the varieties
by different characters were ranked.This study will aid in identification of genotypes studied. The
Database of morphological data was prepared for further use as reference collection.The genetic
information will help for making crosses or planning breeding programs for developing superior
cultivars of miniature roses.
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