Effect of pretreatment methods on germination of Garcinia kola heckel seeds
2000
Gyimah, A.
Garcinia Kola is a non-timber product found in the tropical moist forest of West Africa. The wood is used as chewing stick and over exploitation of the tree in Ghana is leading to its decline. The cultivation of the species has therefore become imperative but the seed takes a long time to germinate. A study was therefore initiated to find effective pretreatment options that could improve the germination of the seed. Pretreatment options that were studied included soaking seeds in water for 24 h, treating seeds in varying concentrations of hydrogen peroxide, alternate soaking in water and drying for a number of times, and warm and cold stratification using moistened sand. Soaking in water and in hydrogen peroxide enhanced germination by hastening the start of germination between 5 to 6 weeks. Warm stratification improved germination of the seeds by 40 to 45 % and shortened the germination period by 20 weeks. Freshly processed seeds had between 65 to 70 % germination as against between 5 to 15 % for dry seeds.
显示更多 [+] 显示较少 [-]