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Effect of soil less culture on growth, yield and forskolin content of coleus - Plectranthus barbatus Andr

KrishiKosh

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Title Effect of soil less culture on growth, yield and forskolin content of coleus - Plectranthus barbatus Andr
 
Creator Sharma, Yashaswini
 
Contributor M, Vasundhara
 
Subject planting, vegetative propagation, nutrients, solutes, yields, drying, fungi, biological development, harvesting, concentrates
 
Description The present investigation "effect of soil less culture on growth, yield and forskolin
content of coleus" was carried out at Sugandhavana, Medicinal and Aromatic Section,
Department of Horticulture, University of Agricultural Sciences, GKVK, Bangalore
(Zone- 5), during the year 2010-12.
Among the media and nutrients, the plants grown in cocopeat with 150 per cent of
Recommended Dose of Fertilizers (RDF) responded with high vegetative growth such as
plant height, number of leaves, plant spread, fresh and dry weight of shoot. Among the
different root parameters, root diameter, fresh and dry weight of roots and dry matter
accumulation was significantly higher in cocopeat media with 80 per cent RDF.
Significantly higher yield parameters, fresh and dry weight of roots (410 and 114 g
plant-1, respectively), yield per m2 and per hectare (1.71 kg m-2 and 17.10 t ha-1,
respectively) were recorded in M2F3 (cocopeat with 80 % RDF). Forskolin content (1.00
%) and benefit cost ratio (4.25) was also found to be maximum in M2F3.
Further screening of coleus varieties/ mutants under cocopeat media and 80 per
cent of RDF resulted in maximum growth parameter values in the mutant, MV2 compared
to other varieties while significantly higher root length and diameter was noticed in MV4
(41.83 and 2.52 cm, respectively). Maximum root to shoot dry weight ratio (3.12), dry
matter (148.14 g plant-1), fresh (356.63 g) and dry weight of roots per plant (112.14 g)
was observed in MV4. The dry tuber yield was also found to be maximum (1.68 kg m-2
and 16.82 t ha-1) in MV4 compared to check variety K-8 (1.00 kg m-2
and 9.99 t ha-1). The
forskolin content in tuberous roots of various coleus varieties was maximum (1.04 %) in
MV4 followed by MV7 (0.92 %). The study highlights the effect of cocopeat with 80 per
cent RDF to be the best fir commercial cultivation of coleus mutants (MV4 and MV7).
 
Date 2016-05-17T15:17:05Z
2016-05-17T15:17:05Z
2012-08-13
 
Type Thesis
 
Identifier Th-10313
http://krishikosh.egranth.ac.in/handle/1/66037
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences, Bengaluru