Lưu ý: Bản dịch của mục này hiện đang được kiểm tra chất lượng, vì vậy một số nội dung tạm thời chỉ hiển thị bằng tiếng Anh.
Mục từ này chưa được dịch sang ngôn ngữ của bạn, vì vậy nội dung gốc được hiển thị bên dưới.
phellogen
This term is a highly specialized botanical descriptor used almost exclusively in plant anatomy and histology. It describes the cork cambium, a lateral meristem that allows woody plants to increase the girth of their stems and roots by producing protective outer layers.
Because it refers to a specific type of biological tissue, it is treated as an uncountable noun in most scientific contexts, referring to the substance or tissue type rather than individual units. It is rarely used outside of academic textbooks or professional botanical research.
Ý nghĩa
Ví dụ
The phellogen is responsible for the production of the cork layer in woody stems.
The phellogen is responsible for the production of the cork layer in woody stems.
Look at this slide to see where the phellogen divides to form the periderm.
The phellogen produces phellem toward the outside and phelloderm toward the inside.
I wonder if the phellogen remains active throughout the entire life of the tree.
Secondary growth in the bark is driven by the activity of the phellogen.
Does the phellogen originate from the cortex or the phloem parenchyma?
The phellogen acts as a lateral meristem in woody plants.
The thickness of the bark depends largely on how rapidly the phellogen divides.