Studies on propagation of some cultivars of Mulberry (Morus spp.) through stem cuttings under Kashmir climatic conditions
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Date
2002
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SKUAST Kashmir
Abstract
Mulberry (Morus spp.) is a perennial tree of economic importance in Sericulture industry. Raising mulberry plants particularly temperate genotypes by cutting method with relative ease in the valley of Kashmir till recently have been ignored because of recalcitrant climatic conditions and prevalence of mulberry cultivars with inherent poor rooting ability. In view of this, an experiment was undertaken at the Division of Sericulture, Mirgund to study the possibility of propagating six promising cultivars of mulberry viz., Ichinose, Kokuso-27, *Chinese white (M. alba L.) Goshoerami, Rokokyaso (M. latifolia P.) and Enshutakasuke (M. bombycis K.) through stem cuttings under Kashmir Climatic conditions. In the first part of the experiment, three growth regulators viz., IAA, IBA and NAA in three concentrations of 100 , 200 and 400 g ml-1 each in two sets, one under natural conditions and other under polyhouse conditions were used. In the 2nd part of experiment, the influence of ringing of cuttings on rooting under natural as well as polyhouse conditions was studied, whereas in 3rd part of the experiment, the cuttings of test cultivars were planted during different growth periods of Kashmir beginning from 1st March to 16th April with 151 days intervals in between under natural conditions. In the last part of the experiment different portion of shoot viz., Terminal, Middle and Basal cuttings of the test cultivars were assessed for their rooting ability. The analysis of data in the first part of the experiment showed significant variation in rooting percentage and other growth traits amongst the genotypes. Rokokyaso registered maximum rooting (69.49%) followed by Chinesewhite (63.49%), Goshoerami (41.99%) and Kokuso-27(40.16%). An interaction between Varieties Growing conditions Hormones revealed that the application of 200 200 g ml-1 NAA improved rooting in Enshutakasuke, Kokuso-27 and Chinesewhite, 100 g ml-1 NAA in Goshoerami whereas IBA 200 g ml-1 proved effective in Rokokyaso under polyhouse conditions. IAA was found to be the least effective. In second part of the experiment, the ringing of cuttings significantly improved rooting and other growth traits even in Ichinose which showed least response to hormonal treatments, besides other test varieties. Analysis of data in third part of experiment revealed that best period of plantation of cuttings was somewhere between second fortnight of March to first fortnight of April, where as in the last part of experiment, it was observed that basal portion of shoot proved to be the best plant material for clonal propagation
Description
M.Sc Thesis submitted to SKUAST Kashmir
Keywords
Mulberry (Morus spp.), Kashmir climatic conditions., Sericulture