Influence of storage duration and thiourea on bulb dormancy and flower yield of tuberose (Polianthes tuberosa L.) cv. Prajwal

Tuberose is a commercially important flower crop propagated through bulbs. Presence of dormancy in the bulbs for 6-8 weeks restricts its immediate use in the next season. Hence the present experiment was conducted by storing the bulbs for 0, 15, 30, 45 and 60 (farmers’ practice) days and subsequently treating with three concentrations of thiourea (3, 4 and 5 per cent). The results showed that minimum number of days taken for sprouting (8.0 days) and the highest number of florets per spike (66.53) and flower yield per plot (4.18 kg) were recorded in 30 days stored bulbs treated with 3 per cent thiourea (T10).