phloem nghĩa là gì

phloem là gì,phloem nghĩa là gì,phloem dịch,phloem là gì,phloem nghĩa là gì,phloem dịch.

Ý nghĩa của phloem bằng tiếng Việt

0 a system of very small tubes that carries food from the leaves to other parts of a plant -- mạch phloem
- The phloem carries these sugars to parts of the plant that cannot photosynthesize, like the roots.

Another explanation could be the lack in maize of specific signal sequences for the transport to phloem sap.
It feeds on the phloem in leaf sheaths, causing wilting and drying of the leaves.
Analysis of these sequences demonstrated high similarity among the phloem-restricted isolates and confirmed the existence of 2 main groups.
The term bark is used here to refer collectively to vascular cambium, phloem, cortex and periderm.
By contrast, the developmental changes in phloem sap composition were consistent between years, indicating a role for phloem sap quality in the aphid population crash.
This was attributed in part to a lowered concentration of phloem amino acids and in part to difficulties in achieving phloem ingestion.
Aphids and other pests are obligatory phloem sap feeders, and they represent important prey for beneficial insects such as predators and parasitoids.
Another open question is whether the transgene product could be transported in the phloem sap.