Author(s): S. Ghosh, M. Ganga and A. J. Joel

Abstract: A research study was conducted on Jasminum spp. during 2017-18 to optimize the suitable propagation environment for large scale multiplication. Propagation environments such as low poly-tunnel and mist chamber were used in the study to judge the suitability of the propagation environment. In this study, three different Jasminum species namely, J. grandiflorum, J. auriculatum and J. nitidum were used.Terminal and semi hardwood cuttings of 15-20 cm length were planted in polybags filled with sandy soil and were kept in two different environments. Observations were recorded after 60 and 90 days of planting on rooting percentage, vegetative growth parameters and root parameters. The highest rooting percentage of 87.67% was recorded under poly-tunnel conditions while in mist chamber environment it was 49.00 per cent. The vegetative growth parameters namely, shoot length (26.80 cm), number of leaves (18.22), number of sprouts (3.22), shoot fresh weight (3.02 g), as well as the root parameters namely, length of longest root (17.57 cm), primary root number (14.56), secondary root number (46.11) and root fresh weight (1 g) were also found to be higher under poly- tunnel conditions compared to mist chamber condition for all the three jasmine species.

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