Phloem fibres (bast fibres) are sclerenchymatous cells, generally absent in primary phloem but found in secondary phloem; they are elongated, unbranched, with needle like apices and have thick cell walls.
Le fibre del floema (fibre del libro) sono sclerenchimatiche, generalmente assenti nel floema primario ma presenti nel secondario; sono allungate, non ramificate, con apici aghiformi e la loro parete cellulare รจ spessa.
| Text | Phloem fibres (bast fibres) are made up of
sclerenchymatous cells. These are generally absent in the primary phloem but are found in the secondary phloem. These are much elongated, unbranched and have pointed, needle like apices. The cell wall of phloem fibres is quite thick. At maturity, these fibres lose their protoplasm and become dead. Phloem fibres of jute, flax and hemp are used commercially |
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| Extra | Jute Corchorus olitorius Hemp Cannabis sativa Flax Linum usitatissimum |
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