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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5.2. GROUP 1 report<br />
Group members<br />
▪ Eva Zaake (Chair)<br />
▪ Lawrent Pungulani (Rapporteur)<br />
▪ Pedro Moçambique<br />
▪ Mauricio Francisco<br />
▪ Ibrahim Ben Amer<br />
1. Difficult <strong>seeds</strong><br />
Groups<br />
▪ Cereals<br />
▪ Legumes<br />
▪ Vegetables<br />
▪ O<strong>the</strong>r crops<br />
▪<br />
▪<br />
▪<br />
▪<br />
Bongo Nkosi<br />
Christopher Nyakiti<br />
Elizabeth Malebana<br />
Juan Fajardo<br />
Group/species<br />
Cereals<br />
Sorghum bicolor, Pennisetum glaucum,<br />
Eleusine coracana, Oryza sativa<br />
Legumes<br />
Arachis hypogaea, Glycine max, Phaseolus<br />
vulgaris, Mucuna pruriens<br />
Comments<br />
▪<br />
▪<br />
▪<br />
▪<br />
Orthodox<br />
Low viability<br />
Immature <strong>seeds</strong> (harvest well matured <strong>seeds</strong><br />
for <strong>storage</strong>).<br />
Maybe problems come from poor <strong>h<strong>and</strong>ling</strong><br />
before <strong>and</strong> during <strong>storage</strong> with exception <strong>of</strong><br />
wild relatives<br />
▪ Orthodox but short-lived<br />
▪ Problems from over drying<br />
▪ Mechanical treatment (some <strong>seeds</strong> are s<strong>of</strong>t<br />
such that mechanical processing leads to<br />
physical destruction <strong>of</strong> <strong>the</strong> seed).<br />
▪ **Oily <strong>seeds</strong> are sometimes dried with non<br />
oily <strong>seeds</strong><br />
Vegetables<br />
Amaranthus sp. ▪ Dormancy<br />
▪ Problems with <strong>h<strong>and</strong>ling</strong><br />
▪ Maybe immaturity<br />
▪ Cleaning<br />
Solanum nigra, Solanum villosum ▪ Dormancy<br />
Cleome gyn<strong>and</strong>ra ▪ Dormancy – needs Scarification,<br />
Abelmoschus esculentus ▪ Short-lived/ easily attacked by insects<br />
Allium cepa ▪ Problem with <strong>h<strong>and</strong>ling</strong><br />
▪ Conflicting results on viability<br />
O<strong>the</strong>r crops<br />
Helianthus annuus ▪ Orthodox<br />
▪ Mechanical damage<br />
▪ Oily seed (short lived)<br />
▪ Toxicity during viability testing<br />
Carica papaya ▪ Intermediate<br />
▪ Dormancy<br />
▪ **Dry <strong>the</strong> <strong>seeds</strong> with ash
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