Jitendra S. Butola , Hemant K. Badola

Abstract

To meet mass multiplication demand in ex-situ cultivation of Heracleum candicans (Apiaceae), a threatened medicinal herb of Himalaya, presoaking treatments of plant growth regulators and other chemicals examined to achieve improved seed germination. In laboratory condition, of 15 treatments tried, GA₃ (250uM), KNO₃ (100 mM) and NaHCIO₃ (15,30 and 45 minutes) significantly stimulated the seed germination over control. NaHCIO₃ (30-min) proved significantly best treatment for achieving highest germination (81.3%) and reducing mean germination time over control. Authors recommended the use of KNO₃ and NaHCIO₃ as effective and cheep stimulants to seed germination in mass multiplication and conservation programme for H. candicans in Himalaya.

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Hemant K. Badola , Mohinder Pal

Abstract

The paper analyses 133 rare, sensitive and threatened medicinal plant species of Himachal Himalayas for their status with the help of use pattern, nativity and endemism and explores possibilities for their conservation. These species constitute 17% trees, 23 % shrubs and 60 % herbs distributed over 59 families. The listed species include those that have been considered prone to endangerment or referred as endangered in literature and through experts' group exercises. These include 34 % endemism (Indian Himalayan Region) of the total defined taxa in the paper. The above total assessed taxa show high nativity (>53 %) to Himalayan region. A higher percentage of species (> 50 %) under ethno-medicinal as well as commercially medicinal use category indicate high pressure on the same. Destructive nature of use pattern, i.e. ischolar_main (60 %), whole plant (16 %), bark/wood/resin (19 %) further indicates threats from harvesting. Special stress is made on 45 threatened species assessed under IUCN and other experts' criteria for Himachal Himalaya. Species prioritization using differcnt exercises is given high value in wide scale conservation strategies, either by means of in-situ or ex-situ methods.

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Hemant K. Badola , Arun K. Badoni , S. P. Sharma

Abstract

Tbe cuttings of Holoptelea integrifolia and Pyrus pashia trees receiving STIK as well as GA₃ at 0.1,0.2,0.5, 1.0 and 2.0 mgmt^-1 levels showed that the stimulalion of lenlicels is more or less paralleled in the two taxa. The higher concentrations of STIK proved more effective in inducing new lenticels, whereas GA₃ showed a pronounced influence at lower concentrations.

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Hemant K. Badola , Arun K. Badoni

Abstract

Various concentrations of Stik (0.1, 0.2, 0.5, 1.0,2.0 mgml^-1) initiated higher percentage of ischolar_maining as well as sprouting of nodes, but only less subsequent shoot growth in the stem cuttings of Vitex nigundo. Similar concentrations of GA₃ have hardly shown any ischolar_maining initiation, but also lower sprouting percentage, although, it exhibited greater subsequent shoot growth than that of Stik. Stik at 0.5 and 1.0 mgml^-1 level have given maximum percentage of moisture content of the ischolar_mains, with 100% ischolar_maining response in cuttings.

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Hemant K. Badola , Arun K. Badoni , G. S. Paliwal

Abstract

The lenticel meristems of stem cuttings of Cedrela toona exhibited pronounced cell division activity after exogenous application of Stik, in weaker concentrations.

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