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Developmental and Structural Section

Jegede, Adeola [1].

determination of the nature of dormancy in bauhinia rufescens seeds.

bauhinia rufescens [family ceasalpiniacea] ,is an economic, ornamental and medicinal plant with fruits edible to humans and animal.thecrude bark is used to treat dysentry smallpox and diarhoea in nigeria.the mature seeds of the plant were investigated to determine the nature of the domancy.acid scarification of seed cot,mechanical means . wet heat [parboiling] alternating temperatures,light treament ,weathering.and treatmaet with organic solvents were the various estaglished techniques used.the most effetive method was acid scarification using suphuric acidfor 25,120 & 240 minutes.this gave 100% germination at day 2 at 30 degree centigradeout of the different mechanical methodsscarification methoda used abrasion with emery cloth[sandpaper] stimulated highest % of germinationof 97%; followed by nail scissors 93%;razor blade57%;needle application0% after day 222222 of incubation at 30 degree centigrade.the following methods were not effective:wet heat; immersion in alcohol,dry and wet storagethe rate of water uptake correlated with % germination.the main cause of dormancy was found tobe impermiable seed coat

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1 - nat. inst, for pharm. res. and dev.[ niprd], med. plant res. & trad. med. [mpr&tm], pmb 21, garki, abuja, abuja, fct, 900213, nigeria

dormancy,bauhinia rufescens,seeds.

Presentation Type: Oral Paper
Session: 16-6
Location: 400/Hilton
Date: Monday, August 15th, 2005
Time: 3:30 PM
Abstract ID:206

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