Genetic Diversity and Performance of Tuberose (Polianthes Tuberosa L.) Genotypes at Gazipur, Bangladesh

Abstract

Seven Tuberose genotypes viz. TR-001, TR-002, TR-003, TR-004, TR-005, TR-006 and BARI Tuberose-1 were studied to evaluate their performance at the Floriculture Research Field, Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI), Gazipur during the period from April, 2015 to January, 2016. The genotype TR-001, TR-004 and TR-005 produced strong scented flowers. The quantitative data revealed that BARI Tuberose-1 required the minimum days (17.67) to reach 50% germination of bulbs and also to reach 50% spike emergence (90 days). TR-001 produced the longest spike (86.49cm). The longest rachis (42.18cm) and the maximum number of florets/spike (47.23) were recorded by TR004. The longest (6.03cm) and the largest (3.80cm) florets were observed in TR-003 and TR-002, respectively. The largest (3.40cm) and the heaviest bulbs (30.0g) were recorded in TR-001. The maximum number of flower sticks/clump (4.33) as well as the maximum flower and bulb yield/ha (266,000 spikes and 582,270 bulbs/ha, respectively) were recorded in TR-003. TR-006 produced the highest bulblets weight/ha (6.60 t). BARI Tuberose-1 remained fresh for the longest time (14.83 days) in the field and also in the vase (7.07 days). The highest percentage of florets (65.63%) was opened by the genotype TR-004. Number of florets showed significantly positive association with rachis length. The spikes length showed significantly positive association with number of spikes and negative significant correlation with leaves/clump.