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Developmental study on tendrils ofCardiospermum halicacabum L

  • Published:
Proceedings / Indian Academy of Sciences

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.

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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

References

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  • Johansen, D. A...Plant Microtechnique, McGraw-Hill, New York, 1940.

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  • Rendle, A. B...The Classification of Flowering Plants. Vol. II:Dicotyledons, University Press, Cambridge, 1952.

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  • Sass, J. E...Botanical Microtechnique, 3rd Edn., Iowa State College Press, Ames., 1958.

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Author information

Authors and Affiliations

  1. Department of Botany, Sardar Patel University, Vollabh Vidyanagar, Gujarat, India

    Y. S. Dave & J. J. Shah

Authors
  1. Y. S. Dave
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  2. J. J. Shah
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Additional information

Communicated by Professor V. Puri, Meerut University, Meerut

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Dave, Y.S., Shah, J.J. Developmental study on tendrils ofCardiospermum halicacabum L. Proc. Indian Acad. Sci. 74, 217–226 (1971). https://doi.org/10.1007/BF03050688

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  • DOI: https://doi.org/10.1007/BF03050688

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