National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Characterization and evaluation of genotypes are essential to provide information on the traits of accession assuring its maximum utilization as well as for conservation of germplasm. India adopted a sui generis system in order to offer plant breeders rights for the newly developed varieties and to protect the existing germplasm. In the present study, a total of 109 rose collections were studied for morphological diversity using PPV&FRA formulated DUS test guidelines. Observations were recorded for a total of 59 morphological descriptors in two consequent years. Considerable amount of variation was noticed for all most all the descriptors, indicating higher diversity among released rose cultivars. The Neibour Joining (NJ) tree separated the 109 cultivars into 10 major clusters based on its morphological similarity. The cultivars are clustered mostly based on its flower colour, flower type and plant growth habit. Majority of the Floribunda and Hybrid Tea cultivars were grouped separately and some of them were intermixed based on the similarities found in few vegetative and reproductive characteristics. The grouping of cultivars in Principal component analysis (PCA) also showed certain degree of resemblance with NJ tree. Present study helps in identification and protection and conservation of Indian rose cultivars, also variability found among cultivars can be usedfor future rose improvement programmes.
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