Record Details

Understanding genetic diversity, structure and population differentiation in selected wild species and cultivated Indian and exotic rose varieties based on microsatellite allele frequencies

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Understanding genetic diversity, structure and population differentiation in selected wild species and cultivated Indian and exotic rose varieties based on microsatellite allele frequencies
Understanding genetic diversity, structure and population
 
Creator Aparna Veluru*, K. V. Bhat1 , T. Janakiram2 , K. V. Prasad3 , D. V. S. Raju3 , C. Bharadwaj4 , Gayacharan1 , Kanwar P. Singh, Namita and Sapna Panwar
 
Subject Rose, Indian roses, wild species, population structure, genetic diversity, microsatellite markers
 
Description Not Available
Roses are the most important commercial ornamental plants
grown for flowers, perfumery and nutraceutical
compounds. Commercially cultivated roses (Rosa × hybrida
L.) are complex interspecific hybrids probably derived from
8-10 wild species among the large diversity of 130-200
species in genus Rosa. Wild germplasm is a primary source
of variability and plays a major role in improving existing
varieties by broadening their genetic base. In the present
investigation, we have utilized the previously identified SSR
primers for studying the diversity among 148 selected rose
genotypes, including wild species and cultivated varieties
of Indian and exotic origin. A total of 88 alleles was scored
using 30 polymorphic loci; they produced average 2.9±1
alleles per locus. Polymorphism information content (PIC)
values for different SSR loci ranged from 0.08 to 0.8 with a
mean value of 0.5±0.2. The neighbor-joining tree generated
based on Nei’s (1978) genetic distance values grouped the
population into three major clusters. Cluster-I & II consists
of all modern rose cultivars (Rosa × hybrida L.) originated
from India and cluster-III consists of all exotic cultivars,
wild species and a few cultivars from India. STRUCTURE
analysis based on microsatellite allelic data, partitioned
the total rose genotypes into four different sub-populations
with some individual genotypes having genomic admixture.
Population subdivision estimates, FST between different
subpopulations ranged from 0.01-0.15 indicates low to
moderate level of divergence existing among the rose
cultivars and germplasm. Population differentiation in rose
cultivars and wild species corresponds to their geographical
origin and lineages. Analysis of molecular variance (AMOVA)
results revealed that 83.12 % of the variance was accounted
for by within sub-groups followed by significant levels of
variation among the populations (10.42%) and least variance
(6.46%) was noticed among individuals within groups
Not Available
 
Date 2019-11-16T06:40:07Z
2019-11-16T06:40:07Z
2019-08-01
 
Type Journal
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/24829
 
Language English
 
Relation Not Available;
 
Publisher ISGPB