Abstract:
Tuberose (Polianthes tuberosa L. Family: Amaryllidaceae) is one of the most
popular tropical ornamental bulbous flowering plant grown on a commercial scale
throughout different states of India. They are much adored by the aesthetic world for
their colour, elegance and fragrance. As the commercial cultivation of tuberose is
gaining importance, introduction and identification of high yielding varieties is
necessary. The quality and production of any crop or variety largely influenced by its
genetic makeup and climatic condition under which they are grown. Therefore, in order
to select suitable and high yielding cultivar for a particular region it is very much
necessary to collect and evaluate all the available genotypes.
The study entitled “Varietal evaluation of tuberose (Polianthes tuberosa L.) for
growth, yield and quality” was carried out at the Department of Floriculture and
Landscaping, College of Agriculture, Padannakkad, Kasaragod and RARS Pilicode
during 2019-2020. The experiment was laid out in Randomized block design with ten
treatments and three replications. The varieties were screened for vegetative, floral,
quality and post- harvest parameters.
The study clearly indicated that genotypic differences among varieties and variation
in environmental factors significantly influence vegetative and floral characters of
tuberose. Minimum number of days to 50 % flowering (108.38 days), longest spike
(111.80 cm) and maximum diameter of peduncle (3.05 cm) was recorded in variety
Arka Prajwal. Variety Arka Suvasini recorded maximum value for rachis length (47.60
cm), longevity of spike (13.60 days), days to complete opening of spikes (26.15 days),
diameter of floret (3.53 cm), weight of 100 florets (235.43 g), loose flower yield (131.31
g) and fresh weight of spike (133.52 g). Variety Arka Vaibhav recorded maximum
number of florets per spike (63.00). Longest floret was observed in variety Culcutta
Single (7.03 cm). Variety Culcutta Double found to be superior in terms of vase life
(8.53 days) of spike.
Concrete recovery found maximum in single petalled cultivars than semi double
and double type cultivars. Stage of harvest, growing environmental condition, season
and method of extraction have significant influence on the recovery of concrete. In the
present study concrete recovery ranges from 0.012 to 0.117 % and maximum concrete
obtained for the variety Arka Sugandhi.
Out of the ten genotypes of tuberose (Polianthes tuberosa L.) comprising single,
semi- double and double petalled cultivars, the variety Arka Prajwal, Arka Shringar,
Arka Sugandhi and Culcutta Single among single petalled type, Arka Vaibhav the only
semi petalled type and variety Arka Suvasini and Culcutta Double among double
petalled type were found to be superior in terms of growth, yield and quality of flower
under northern Kerala condition. Among these Arka Prajwal can be recommended for
loose flower production, Arka Suvasini for cut flower production and Arka Sugandhi
for oil extraction purpose.