The Oxalidaceae comprise more than 500 species of herbaceous plants, shrubs and trees within about ten genera which provide edible fruits (e.g. Averrhoa carambola L., carambola). The fruits are either dry dehiscent capsules or fleshy and berry-like. Most, if not all, species are thought to show orthodox seed storage behaviour.
SEED DORMANCY AND GERMINATION
No detailed information on seed dormancy and germination is provided in this chapter, but it appears that problems in germination tests are comparatively minor. As a first step with a species of unknown characteristics RBG Kew Wakehurst Place suggests testing the seeds at a constant temperature of 16°C with light applied for 12h/d. If this technique does not result in satisfactory germination clues for alternative techniques could be sought from Table 52.1 which summarises other germination test recommendations.
TABLE 52.1 Summary of germination test recommendations for species within the Oxalidaceae
|
Species and Authority |
Substrate |
Temperature |
Duration |
Additional directions |
Source |
|
Averrhoa bilimbi L. |
|
|
21d |
pre-soak, 24h |
Riley |
|
Averrhoa carambola L.
|
S |
25°-30°C |
36d |
light, continuous |
CHML |
|
|
|
21d |
pre-soak, 24h |
Riley |
