The Evaluation for Long Lasting Flower in F1 Hybrid American Marigold (Tagetes erecta L.)

Abstract

The flower durable life of American marigold (Tagetes erecta L.) F1 hybrid was evaluated in the experiment. The objectives of this research are to study the important characteristics related to flower extending life of the marigold and to select the F1hybrid with durable flowers for the vast flower utilization. Eleven F1 hybrid lines and eleven commercial F1 hybrid lines were tested for long flower’s vase life under laboratory of Maejo University in wet season of 2017 using Completely Randomized Design with 5 replications. The resulted found that commercial F1 hybrid lines Cana Gold Extra, Queen Yellow and Srisiam 636 had the logest vase flower life for 13.80 days. while Queen Yellow showed the least broken pedicel at the average 9.00 score. The new F1 hybrid No. 8 had the least withered petal wilting score and disease infection at the average 7.00 and 7.56 scores, respectively whereas the new F1hybrid No. 6 and hybrid No. 7 had the highest flower weight lost for average of 3.04 % and 3.16 %, repectively and the commercial F1 hybrid line, Mahachok Deep Gold Summer showed the lowest flower weight lost at 1 %. There was a positive correlation among the vase life of flower withered petal, disease infection and water absorptionrate. According to the results The new F1 hybrid No. 8 suitable for breeding in the marigold for longer vase life.