Germination and its inhibition in coffee
When fresh and dried coffee fruits and seeds were germinated in sand, the initial germination of fresh seeds without seed coat was obtained about one month after planting; seeds in fresh whole fruits germinated 20 days later. Besides having a late start, the latter germinated more slowly (versus 10 per cent per day). Except the seeds without seed coat, the dried material germinated later and slower than their fresh counterparts. Much of the dried berries and seeds rotted. A germination inhibitor was extracted with 80-per cent methanol from the seed coat of coffee. When partitioned in ethyl acetate-water and chromatographed on filter paper in a system of isopropanol-ammonia-water (10:1:1), its Rf-value was 0.85 to 0.90. It exhibited properties which differed from those established for abscisic acid
| Format: | biblioteca |
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| Published: |
Mar
|
| Subjects: | GERMINACION, INHIBIDORES DE LA GERMINACION, ENSAYO DE SEMILLAS, |
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