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Assessment of genetic diversity and population structure of fragrant rose (Rosa × hybrida) cultivars using microsatellite markers

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Title Assessment of genetic diversity and population structure of fragrant rose (Rosa × hybrida) cultivars using microsatellite markers
GENETIC VARIABILITY STUDIES IN FRAGRANT ROSES
 
Creator APARNA V1, K V BHAT2, T JANAKIRAM3, K V PRASAD4, D V S RAJU5, SAPNA P6, NAMITHA7 and KANWAR P SINGH8
 
Subject Characterization, Genetic diversity, Fragrant roses, Population structure, SSR markers
 
Description Not Available
Rose (Rosa × hybrida L.) is a commercially important ornamental crop which represents major share in world
floriculture market and essential oil industry. In the present investigation, genetic diversity among 25 fragrant rose
cultivars belonging to exotic and Indian origin was studied during 2016–17 at New Delhi. Thirty one SSR markers
were used for characterization. A total of 96 alleles were identified among the genotypes with an average of 3.9 alleles
per loci. Diversity among populations of different origins was analysed and it revealed that, cultivars from Indian
origin exhibited higher diversity as compared to the selected cultivars from American and European origin. Effective
number of alleles (Ne) and expected heterozygosity (He) values were more in Indian population (Ne=1.93, He=0.49) as
compared to selected populations of American (Ne=1.45, He=0.45) and European (Ne=1.29, He=0.29) origin. Matching
coefficient values ranged from 0.55– 0.86 indicated the existence of moderate variability among fragrant roses of
different origin. Unweighted Pair Group Method using Arithmetic Mean (UPGMA) dendrogram clearly separated all
the 25 genotypes into 7 different clusters. Cultivars, Rose Sherbet, Century Two Seedling and Brandy showed distant
relationship with other cultivars and were found in three different individual clusters V, VI and VII respectively. The
highest and lowest similarity values were noticed between the cultivar sets, Jawahar and Double Delight (86%) and
Century Two Seedling and Brandy (55%). The molecular data generated in present investigation would be highly
helpful for cultivar identification, conservation and for breeding fragrant roses.
Not Available
 
Date 2024-04-05T13:45:27Z
2024-04-05T13:45:27Z
2019-08-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/81842
 
Language English
 
Relation Not Available;
 
Publisher ICAR