Author(s):

Aman Dabral, BS Butola, VP Khanduri, CM Sharma and Dhanush C

Abstract: The present study deals with parameters that could influence early recruitments including germination and seedling growth with emphasis on the establishment of Quercus leucotrichophora in Garhwal Himalaya, because plant secondary compounds (terpenoides and or phenolic compounds) may direct competition. Autotoxicity study in different plant part extracts concentration in laboratory and nursery. In this experiment, germination%, mean germination time, germination index were taken in laboratory while in nursery, germination%, mean germination time, germination index, different growth attributes and biomass estimation were done by giving different plant part extract treatments. Study reveals that the significant effect of different concentration of bark, green leaves and litter extract of Q. leucotrichophora on both germination and growth of its own seedling indicating an auto toxic effect in laboratory as well as in pot culture experiment. Both stimulatory and inhibitory effect of various extracts was marked and found more pronounced during early stage of germination. The study reveals that phytochemicals present in plant parts exerts positive as well as negative effect on seed germination parameters and growth parameters. The purpose of study was to examine Autotoxicity against seed germination and seedling emergence of Q. leucotrichophora, the patterns of seed germination and seedling establishment under varied condition.

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