VARIABILITY STUDIES AND DUS CHARACTERIZATION OF DIFFERENT TUBEROSE [Agave amica Medik.] GENOTYPES
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Date
2023-08-24
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DEPARTMENT OF FLORICULTURE AND LANDSCAPE ARCHITECTURECOLLEGE OF HORTICULTUREBANDA UNIVERSITY OF AGRICULTURE & TECHNOLOGY BANDA-210001, UTTAR PRADESH (INDIA)
Abstract
Tuberose (Agave amicaMedik) is one of the most significant tropical ornamental bulbous flowering plants belongs to the family Amaryllidaceae.It is a half-hardy bulbous perennial. The flower has delightful fragrance and are a source of tuberose oil, that can be used in the preparation of various perfumes and cosmetics.
A field experiment was conducted during 2022-23 to study the Variability studies and DUS characterization of different Tuberose (Agave amicaMedik.) genotypes" at the Instructional Farm of the Department of Floriculture and Landscape Architecture, College of Horticulture, Banda University of Agriculture and Technology, Banda, Uttar Pradesh. The experiment was laid out in randomized block design with twenty treatments replicated thrice. All the genotypes possess wide and significant differences for all the parameters studied ie. their growth, quality and yield. Twenty genotypes were evaluated for vegetative growth, flowering, yield and postharvest life during 2022- 23 revealed that the genotypes Prajwal, GKTC-4, Hyderabad single were found promising for highest plant height (69.0, 65.13, 63.93) and number of leaves. These cultivars Prajwal and GKTC- 4 also having promising flower yield per plot which can be used for cut flower production. High GCV were observed for diameter of spike, number of bulbs per plant, weight of individual bulb and high PCV were observed number of leaves per plant, weight of individual bulb, number of leaves per plant, number of bulbs per plant, diameter of spike, number of leaves per plant, number of florets per spike, days taken to spike emergence, high heritability associated with high genetic advance % of mean were obtained for nuinber of bulbs per plant, diameter of spike, weight of bulb, number of floret per spike, days taken to spike emergence, leaf length, days taken to 1 floret opening, flowering duration, diameter of lowest floret, spike length, length of floret showed presence of additive gene action. Plant height, number of leaves per plant, leaf length, spike length, rachis length, number of florets per spike were highly significant and positive correlated with the number of flowers per plant.
Path coefficient analysis revealed that the number of leaves per plant, number of florets per spike, day's taken to spike emergence, leaf length, leaf breadth, spike length, highest direct effect on
number of flowers. A total of 20 tuberose genotypes were characterized for 13 traits by adopting DUS test gaidelines developed by PPV & FRA, New Delhi, Out of 5 visually assessed DUS characters, 4
were monomorphic, 7 dimorphic and 2 polymorphie. Six traits were identified for grouping of
genotypes vir leaf length, bud colour, inflorescence length, flower type, flower shape, and days
taken to flowering
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KHUSHBOO VERMA {2023} VARIABILITY STUDIES AND DUS CHARACTERIZATION OF DIFFERENT TUBEROSE [Agave amica Medik.] GENOTYPES, M.Sc. (Ag.), DEPARTMENT OF FLORICULTURE AND LANDSCAPE ARCHITECTURECOLLEGE OF HORTICULTUREBANDA UNIVERSITY OF AGRICULTURE & TECHNOLOGY BANDA-210001, UTTAR PRADESH (INDIA)