Tolerância á dessecação em plântulas de cerejeira (Amburana acreana Ducke)

Abstract

The aim of this study was induction of desiccation tolerance in cherry seeds collected in northern Mato Grosso. Collected seeds is in the city of Sinop, during the months from August to November 2015, stored for a maximum period of three months until the start of the experiment in December 2015. The seeds were scarified with sandpaper iron number 50, rehydrated in a humid environment, without direct contact with water and incubated in BOD germination chamber at 30 ° C. P / evaluate the desiccation tolerance. The scarified seeds were incubated at 30 °, and reaching the primary root of 2 mm were subjected to different drying times on silica gel, 06h; 12h; 24h and 48h. P / every time the humidity was determined in oven at 105 ° C for 24 hours with three replications of 10 seeds. The reinduction was taken again hydrating a sample of 20 seeds four repetitions in gerboxes boxes prepared with agar (0.7%). A completely randomized design-DIC, and submitted the results to the Tukey 5%. The Amburana seeds Acre Duke were classified as orthodox as the ability to desiccation tolerance, remaining viable after dehydrated at low moisture levels and water stress, and even then, when hydrated resume their growth, without major damage to the plant.