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Doctorat
Inde
2009
Phytochemical investigation of some flowering parasitic plants of arid zone of Rajasthan growing in vivo and tissue culture
Titre : Phytochemical investigation of some flowering parasitic plants of arid zone of Rajasthan growing in vivo and tissue culture
Auteur : Yadav, Dayashree
Université de soutenance : Maharaja Ganga Singh University
Grade : Doctor of Philosophy (PhD) 2009
Sommaire partiel
The purpose of proposed study was to investigate the nature and effect
on hving organisms, analyzed for the quahty and quantity, nature and
biosynthesis of antimicrobial substances, primary products like amino acids,
ascorbic acids, nutritive content and secondary metabolites such as alkaloids,
steroids, flavonoids, sapogenins and effect of ethanol crude extract on
developmental stages of Rana cyanophlyctis and tissue culture studies from
flowering parasitic plant species of Rajashtan i.e. Cistanche tubulosa and
Orobanche aegyptiaca.
The following plant species are tentatively selected for the investigation :
1. Cistanche tubulosa Wight. (Orobanchaeae)
2. Orobanche aegyptiaca Pers.Syn.(Orobanchaceae)
These plants have been reported in Chinense medicine to have
therapeutic value in the treatment of a wide variety of disease conditions. All
the plants are indigenous to the arid zone and are available for research work
and also to the local people for use in the treatment of disease locally seen in
particular and at other places in general and thus form a base to go into the
details of scanning their medicinal values.
Arid zone plants of Rajasthan are good candidates for the production of
various types of secondary metabolites which makes them resistant from
drought, salinity and pathogens. I have worked on two genera of angiospermic
parasitic plant of Orobanchaceae family namely Cistanche tubulosa wight.
(Orobanchaceae) and Orobanche aegyptiaca Pers.Syn.(Orobanchaceae). Both
parasitic plants are widely distributed in the arid and semi arid areas of western
Rajasthan and are seen to grow on stabilized sand dunes and sandy plains as
complete root parasite on Acacia nilotica, Aerva tomentosa, Calligonum
polygonoides, Calotropis procera, Capparis deciduas, Echinops echinatus,
Laptadenia pyrotechnica, Prosopis cineraria, Salvadora persica and Brassica
campestris, Cicer arietenum and Eruca sativa etc.
The sudden appearance of the parasite in late winter months, its brief
hfe cycle, gregarious occurrence, wide distribution, extensive host range,
production of seeds in large number, stout and succulent stem densely packed
with starch grains preponderance of mucilaginous substances, abundance of
pigments (soluble in water, alcohol, acid and alkali) and medicinal utility
were some of the very interesting features which needed detailed
investigations.
Mots clés : Ascorbic acid Cistanche tubulosa Flowering parasitic plants Life Sciences,Plant and Animal Science,Plant Sciences Phytochemical investigation Tissue culture
Page publiée le 15 février 2021