Evaluation of tuberose (Polianthes tuberosa) genotypes (Double) for yield and genetic variability

An experiment was laid out in Randomized Block Design (RBD) with three replications to evaluate the performance of five tuberose genotypes viz., Calcutta Double, Hyderabad Double, Pearl Double, Suvasini and Vaibhav under tropical conditions during 2011–2012. Results revealed that Suvasini showed its superiority for days taken for sprouting of bulbs, plant height, number of leaves per plant, flowering duration, spike length, number of florets per spike, length of the floret, weight of florets per spike, number of spikes per m² and yield of florets/plot. The parameters viz., number of florets per spike recorded high phenotypic and genotypic coefficient of variation. High heritability coupled with high genetic advance as per cent of mean was observed for number of florets per spike, number of spikes per m², rachis length, yield of florets/plot, spike length, flowering duration, days taken for sprouting and plant height.