PurposeSealing different parts of cassava stems by wax, and combined with zip lock and moisturizing treatment, we intended to provide a reference for extending the storage period and improving the storage vigor of the cassava stem.
MethodThe mature and fresh cassava stem of GR4 was cut into segments, then 3 treatments were carried out: wax sealing and zip lock, wax sealing with adding moisture (50% moisture wet sawdust was added in ziplock bag), and wax sealing and bared. Fresh segments of cassava stem were taken as contrast. All treated materials were stored in a dry, shady and cool condition. The water loss was measured at every 3 days. After 51 days, all processed cassava stems were planted in sandy land, and the survival rate and seedling growth were investigated after 60 days of planting.
ResultsAfter 51 days of storing, regarding to the treatment of wax sealing and bared, the relative moisture content were sealing the both ends (44.2%) > sealing the base end (36.3%) > sealing the top end (33.3%) > no sealing (26.0%). The survival rate after planting were sealing the both ends (78.1%) > sealing the top end (56.4%) > sealing the base end (44.2%) > no sealing (11.8%). The moisture content of cassava stems were ≥88.7%. At the treatment of wax sealing and zip lock, the survival rate after planting was 100% and there was no significant difference about seedling growth compared to sowing fresh stem segments. As the treatment of wax sealing with adding moisture, although the segments of cassava stem relative water content did not change significantly, but they were all mildewed.
ConclusionThe segments of cassava stem should be sealed by wax in the ends, zip lock and stored in a dry, cool and shady environment to keep storage vigor. It was simple and easy to operate in cassava’s germplasm preservation and plant.
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