Improving the identification, handling and storage of âdifficultâ seeds ...
Improving the identification, handling and storage of âdifficultâ seeds ...
Improving the identification, handling and storage of âdifficultâ seeds ...
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7.3. List <strong>of</strong> “difficult to conserve” species, as identified by <strong>the</strong> workshop<br />
Family Genus Species Issues/germination results<br />
ACANTHACEAE Barleria acanthoides Low germination<br />
ALLIACEAE Allium cepa 92.5% germination after 13 years <strong>storage</strong>.<br />
Problem with <strong>h<strong>and</strong>ling</strong>. Conflicting results on<br />
viability. Inherently short lived, small<br />
embryo.<br />
AMARANTHACEAE Amaranthus sp Low viability. Some dormancy. Problems<br />
with <strong>h<strong>and</strong>ling</strong>. Maybe immaturity. Cleaning<br />
issues<br />
AMARANTHACEAE Beta sp Germination problems - difficulties in<br />
evaluation <strong>of</strong> seedlings infected with fungi<br />
AMARANTHACEAE Celosia schweinfurthiana Low germination<br />
ANACARDIACEAE Lannea alata Low germination<br />
ANACARDIACEAE Lannea triphylla Low germination<br />
ANACARDIACEAE Mangifera indica Problems in germination. Have to wait for<br />
fruits to mature, <strong>the</strong>n remove pulp <strong>and</strong> wash<br />
<strong>seeds</strong> to avoid fungal infection (also use<br />
fungicide), <strong>the</strong>n dry. Can conserve for 5 to 6<br />
months, <strong>the</strong>n regenerate after this time. Seeds<br />
may germinate during drying due to high<br />
relative humidity.<br />
ANACARDIACEAE Ozoroa obovata Low germination<br />
ANACARDIACEAE Sorindeia madagascariensis Low germination<br />
ANNONACEAE Annona senegalensis Low germination<br />
ANNONACEAE Xylopia tettensis Low germination<br />
APIACEAE Daucus carota Variation in seed maturity<br />
APOCYNACEAE Hoodia curorii ssp lurgadii High germination % at <strong>storage</strong><br />
APOCYNACEAE Hoodia gordonii Problems in achieving germination rates<br />
above 50%. Improvement in germination %<br />
with pretreatment.<br />
APOCYNACEAE Hunteria zeylanica Low germination<br />
APOCYNACEAE L<strong>and</strong>olphia watsoniana Low germination<br />
APOCYNACEAE Orbeopsis sp Improvement in germination % with<br />
pretreatments<br />
APOCYNACEAE Stomatostemma monteiroae Improvement in germination % with<br />
pretreatments<br />
ARECACEAE Cocos nucifera Embryo rescue <strong>and</strong> <strong>storage</strong> as tissue culture<br />
possible. Storage in field genebanks.<br />
Recalcitrant.<br />
ARECACEAE Phoenix reclinata Improvement in germination % with<br />
pretreatments<br />
ARISTOLOCHIACEAE Aristolochia bracteolata Low germination<br />
ASCLEPIADACEAE Gomphocarpus stenophyllus Low germination<br />
BIGNONIACEAE Rhigozum brevispinosum High germination % at <strong>storage</strong><br />
BORAGINACEAE Cordia sinensis Low germination
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