VARIATION STUDIES IN AUTUMN OLIVE (Elaeagnus umbellata Thunb.) IN HIMACHAL PRADESH
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Date
2021-10
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UHF,NAUNI
Abstract
ABSTRACT
The present study was confined to six populations selected from three districts comprising of
Elaeagnus umbellata Thunb. in Himachal Pradesh. There was significant variation in the
morphological characters of E. umbellata Thunb. in six natural populations. The fruits of E. umbellata
Thunb. were collected during the month of September, and their characteristics were studied. The
fruit weight and seed weight was observed maximum in Kalaghat population and TSS was
noted maximum in Kujji population. The repeatability coefficient of population was highest
in TSS. The phytosociological survey was conducted in Elaeagnus growing and non-
Elaeagnus growing sites. In Elaeagnus present sites E. umbellata Thunb. was dominating
shrub, it was due to the invasive nature of this shrub. The account of herb species was also
highest in these sites as compared to where this shrub was absent. The nitrogen content found
in the Elaeagnus growing sites was greater than other sites because E. umbellata Thunb. has
ability to fix nitrogen especially in infertile soils due to the presence of nodules on its roots
that houses nitrogen fixing actinomycetes.