GENETIC EVALUATION OF ALSTROEMERIA GERMPLASM
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Date
2021-10
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Publisher
UHF,NAUNI
Abstract
ABSTRACT
The present investigation entitled, ‘Genetic evaluation of Alstroemeria germplasm’ was carried out at
the experimental farm of Department of Floriculture and Landscape Architecture, Dr. YSP University of
Horticulture and Forestry, Nauni, Solan, (H.P.) during 2019-2020 and 2020-2021. The experiment was laid out
under naturally ventilated polyhouse conditions in a randomized block design with three replications. 16 diverse
genotypes (in which 14 are open pollinated seedling selections of parent cv. ‘Riana’ and ‘Serena’) were
evaluated for various growth and flowering parameters to assess extent of variability, heritability and genetic
divergence for various traits and morphological characterization of these genotypes. Wide and significant
variations were present for all the parameters were observed among different genotypes. It was also observed
that genotypes performed better during the year 2020-2021 rather than during 2019-2020 for almost all the
parameters. With regards to performance of genotypes ‘UHFSAlst 1’, ‘UHFSAlst 4’, ‘UHFSAlst 5’, ‘UHFSAlst
11’, ‘UHFSAlst 29’, ‘UHFSAlst 33’, ‘UHFSAlst 41’performed better in terms of economical parameters. From
16 genotypes novel colour was observed in ‘UHFSAlst 1’, ‘UHFSAlst 11’, ‘UHFSAlst 40’ (magenta pink),
UHFSAlst 3’, ‘UHFSAlst 5’, ‘UHFSAlst 29’ (dark purple), ‘UHFSAlst 33’, ‘UHFSAlst 41’ (variegated). On the
basis of performance of genotypes ‘UHFSAlst 1’ and ‘UHFSAlst 5’ performed well w.r.t to earliness of
flowering, ‘UHFSAlst 29’ and ‘Serena’ w.r.t plant height and length of cut stems. Genotypes ‘UHFSAlst 1’
followed by ‘UHFSAlst 29’, ‘UHFSAlst 33’ produced more number of flowering shoots per plant as compared
to the parents ‘Riana’ and ‘Serena’. Characters such as umbel: length of branches, flower: length of pedicel and
weight of cut stem recorded high values for genotypic coefficient of variability (GCV). High heritability
estimates were recorded for all the sixteen characters under study. High heritability coupled with high genetic
advance was observed for characters such as plant height, length of cut stem, number of days taken to bud
formation, number of days taken to flowering and weight of cut stem. Significant positive phenotypic
correlation of yield parameter recorded with number of flowering shoots per plant was observed with length of
cut stem, leaf length, umbel: number of branches, flower size, stem thickness. Characters such as weight of cut
stem, leaf length, flower: length of pedicel, vase life, leaf width, number of days taken to bud formation, flower
size, stem thickness, length of cut stem, number of days taken to flowering umbel: length of branches showed
positive direct effect towards number of flowering shoots per plant. Morphological characterization of these
genotypes was done for 35 characters and the genotypes were categorized accordingly and the results were
summarized in the form of draft guidelines