STUDIES ON MORPHO-CHEMICAL VARIATION IN GYNODIOECIOUS Valeriana jatamansi JONES

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dc.contributor.advisorSHARMA, YASH PAL
dc.contributor.authorTHAKUR, PANCY
dc.date.accessioned2017-12-14T07:03:30Z
dc.date.available2017-12-14T07:03:30Z
dc.date.issued2017-12
dc.description.abstractABSTRACT The present investigation entitled “Studies on morpho-chemical variation in gynodioecious Valeriana jatamansi Jones” was carried out in the field and laboratory of the Department of Forest Products, College of Forestry, Dr. Y S Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.) during 2014-16. The study was conducted under five broad heads namely (i) Morphological features and isolation of morphovariants, (ii) Stability of morphological features of morpho-variants, (iii) Evaluation of different morphovariants for phytochemical content and yield, (iv) Progeny evaluation of female & and bisexual plants, and (v) Standardization of analytical method for quantification of valepotriates. Already existing plants of different germplasms i.e. IVth inbred generation of INGR 11036 (IC 05844665), IVth inbred generation of “A” germplasm and general plants of different populations of Valeriana jatamansi were utilized for the present study. Wide variation in the plants for plant habit, leaf characteristics and floral parameters was observed. Detailed morphological studies resulted in identification of 46 morpho-variants differing in atleast one distinct qualitative morphological feature. Out of 46 selected morpho-variants, 25 morpho-variants were female flowering plants and 21 morpho-variants were bisexual flowering plants. The distinct qualitative morphological features of morpho-variants were found stable in the vegetatively raised offsprings of all the morpho-variants. Significant variation was recorded among the morpho-variants with regard to leaf length, leaf width, ratio of leaf length and leaf width, plant height, petiole length, petiole diameter, rhizome diameter, fresh & dry aerial biomass, fresh & dry rootstock biomass and flowering initiation. Among female and bisexual morpho-variants, significant difference was observed for plant height, leaf width, petiole diameter and fresh and dry biomass of rhizomes. Phytochemical analysis revealed wide variation in concentration of valepotriate’s (valtrate, acevaltrate, Didrovaltrate & IVHD Valtrate) in roots, rhizomes & rootstocks of different morpho-variants. The valtrate content varied from 0.749% to 2.878% in rhizomes, 0.917% to 5.221% in roots and 0.927% to 3.267% in rootstock; acevaltrate content varied from 0.022% to 0.512% in rhizomes, 0.015% to 1.647% in roots and 0.260% to 0.909% in rootstock; didrovaltrate content varied from 0.187% to 1.688% in rhizomes, 0.053% to 0.365% in roots and 0.136% to 0.958% in rootstock; IVHD valtrate content varied from 0.179% to 1.491% in rhizomes, 0.176% to 0.755% in roots and 0.214% to 1.101% in rootstock of different morpho-variants. The total valepotriate’s content varied between 1.761% to 4.848% in rhizomes, 1.598% to 6.420% in roots and 1.845% to 4.875% in rootstock of different morpho-variants. The concentration of diene type of valepotriate’s was more in roots than rhizomes and monoene type of valepotriate’s were more in rhizomes than roots. On the basis of phytochemical content and morphological studies, promising morpho-variants has been identified which can be further used for breeding purpose for isolation of chemotype/variety with stable and distinct morphological features. Seasonal variation studies indicated that during September month, valepotriates content was maximum but due to higher rootstock biomass, valepotriate’s yield was maximum in November month. Analytical method for quantification of individual valepotriate’s through HPLC has been standardized and developed.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810037542
dc.keywordsgynodioecious Valeriana jatamansi Jones,morpho-chemical variation,Studiesen_US
dc.language.isoenen_US
dc.pages285+1en_US
dc.publisherUHF,NAUNIen_US
dc.research.problemMEDICINAL AND AROMATIC PLANTSen_US
dc.subForest Productsen_US
dc.subjectnullen_US
dc.themegynodioecious Valeriana jatamansi Jones,morpho-chemical variation,Studiesen_US
dc.these.typePh.Den_US
dc.titleSTUDIES ON MORPHO-CHEMICAL VARIATION IN GYNODIOECIOUS Valeriana jatamansi JONESen_US
dc.typeThesisen_US
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