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Developmental study on tendrils ofCardiospermum halicacabum L

  • Y. S. Dave
  • J. J. Shah
Article
  • 11 Downloads

Abstract

InC. halicacabum the main bud meristem which develops into an inflorescence is axillary and distinct at the second node below the shoot apex. In its further development two opposite bract primordia develop at its first node and they bear two axillary tendril primordia. The inflorescence axis at its terminal region develops into three floral branches with three subtending bracts. Two or three accessory buds are associated with the inflorescence at the axil.

The trace procambium of the inflorescence axis develops acropetally. Frequent periclinal divisions at tendril apex followed by rapid elongation of the cells and the general intercalary growth considerably increase the length of the tendril primordium. There is a single bract trace and the nature of the vascular supply to the peduncle is similar to that of the tendril. Ontogenetically the tendril is a lateral floral branch.

Keywords

Shoot Apex Leaf Trace Inflorescence Axis Rapid Elongation Inflorescence Branch 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Key to Abbreviations

A

axis

AB

abaxial side

AC

accessory bud

AD

adaxial side

AT

accessory bud trace

AX

axillary bud

BA

basal portion

BM

bud meristem

BR

bract

BT

bract trace

CA

cambium

CL

chlorenchyma

CO

collenchyma

FA

floral apex

FL

flower

FR

fruit

IA

inflorescence axis

IT

branch trace of inflorescence axis

IT1, IT2, IT3

traces for three terminal branches of inflorescence axis

L

leaf

LC

laticifer

LT

lateral leaf trace

MI

middle portion

MT

median leaf trace

N1, N2, N3

number of nodes from below in a seedling

PB

prophyll bud

PC

procambium

PH

phloem

PI

pith

PR

prophyll

RM

residual meristem

SA

shoot apex

SL

sclerenchyma

T

tendril

TE

terminal portion

TT

tendril trace

V

vacuolated region

VB

vascular bundle

VS

vascular strand

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References

  1. Hooker, J. D...Flora of India, L. Reeve and Co., Ashford, Kent, 1872.Google Scholar
  2. Johansen, D. A...Plant Microtechnique, McGraw-Hill, New York, 1940.Google Scholar
  3. Rendle, A. B...The Classification of Flowering Plants. Vol. II:Dicotyledons, University Press, Cambridge, 1952.Google Scholar
  4. Sass, J. E...Botanical Microtechnique, 3rd Edn., Iowa State College Press, Ames., 1958.Google Scholar

Copyright information

© Indian Academy of Sciences 1971

Authors and Affiliations

  • Y. S. Dave
    • 1
  • J. J. Shah
    • 1
  1. 1.Department of BotanySardar Patel University, Vollabh VidyanagarGujaratIndia

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