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Structure of Stem and Cambial Variant in Spatholobus parviflorus (DC.) Kuntze. (Fabaceae)


Affiliations
1 Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, India
2 Botany Department, St. Xavier`s College, Palayamcottah, Thirunelveli, India
 

Spatholobus parvifloru (DC.) Kuntze. is a tropical woody climber which shows abnormal secondary growth in thickness, due to the formation and activity of successive cambia. By the dedifferentiation of groups of parenchyma cells outside the band of sclereid fibers, the cambial rings are formed. The sclereid band is formed between the primary bark fibers. Each successive cambium first produces a layer of sclereid fibers which separate the vascular tissue produced by cambial activity. The epidermis is replaced by the periderm. This periderm helps the vessel segments to remain undamaged when the woody stem twist around the support.

Keywords

Spatholobus partiflorus, Cambium, Fabaceae.
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  • Structure of Stem and Cambial Variant in Spatholobus parviflorus (DC.) Kuntze. (Fabaceae)

Abstract Views: 191  |  PDF Views: 132

Authors

V. S. Usha
Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Palode, India
L. Louis Jesudass
Botany Department, St. Xavier`s College, Palayamcottah, Thirunelveli, India

Abstract


Spatholobus parvifloru (DC.) Kuntze. is a tropical woody climber which shows abnormal secondary growth in thickness, due to the formation and activity of successive cambia. By the dedifferentiation of groups of parenchyma cells outside the band of sclereid fibers, the cambial rings are formed. The sclereid band is formed between the primary bark fibers. Each successive cambium first produces a layer of sclereid fibers which separate the vascular tissue produced by cambial activity. The epidermis is replaced by the periderm. This periderm helps the vessel segments to remain undamaged when the woody stem twist around the support.

Keywords


Spatholobus partiflorus, Cambium, Fabaceae.

References