Abstract
In vitro, germination is the most commonly used technique in pollen physiology. This provides a simple experiment method to study the pollen germination and pollen tube growth, in the endogenous as well as exogenous conditions. In vivo conditions (endogenous) can also apply to the study of pollen system. In the present investigation, the pollen germination of Spathodia companulata P. Beauv was studied in the different parts of the carpel viz., style, stigma, ovary, style-stigma, style-ovary and whole gynoecium. Spathodia companulata P. Beauv is planted for reforestation schemes, for soil conservation. In India, it is seen that there is a rare formation of fruit and seeds in this plant. Thus for the study of the growth of the plant for cultivation purposes, the growth of the pollen tube was studied which could be one of the reason for the less fruit and seed formation. Pollen tubes were found to be stimulated by those components present in the different selected parts of the carpel.
Highlights
Spathodea campanulata is an African plant introduced into South America and other tropical and subtropical areas for ornamental purposes
The aim of this study provides the details of formulation of an optimized pollen germination medium as an in vitro study with the association of the conditions of in vivo provided to study by observing the effect of different parts of carpels on the pollen tube growth in Spathodea companulata
To standardize the germination medium, for pollen germination and pollen tube development, the different extracts of female reproductive part viz., The percentage of pollen germination and pollen tube growth was assessed in the extract of different Female Reproductive parts (FRP) respectively
Summary
Spathodea campanulata is an African plant introduced into South America and other tropical and subtropical areas for ornamental purposes. The flowers bloom with great profusion, and the trees can be seen from great distances. It is not browsed by domestic animals and a popular decorative tree for avenues. It has shallow roots and a tendency for branches to break off in a storm. The seeds, flowers and roots are used as medicine in most of the African countries. The tree is planted for soil improvement, reforestation, erosion control and land rehabilitation
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