COMPARATIVE PERFORMANCE OF MULTIVOLTINE × BIVOLTINE CROSS BREED OF SILKWORM (BOMBYX MORI L.) ON DIFFERENT VARIETIES OF MULBERRY
KrishiKosh
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Title |
COMPARATIVE PERFORMANCE OF MULTIVOLTINE × BIVOLTINE CROSS BREED OF SILKWORM (BOMBYX MORI L.) ON DIFFERENT VARIETIES OF MULBERRY
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Creator |
N S, MAMATHA
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Contributor |
FATIMA SADATULLA
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Subject |
inorganic acid salts, limes, farmyard manure, fractionation, acidity, iron, additives, poultry equipment, inorganic compounds, soil sciences
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Description |
The “Comparative performance of multivoltine × bivoltine cross breed of silkworm (Bombyx mori L.) on different varieties of mulberry” was studied under field condition at the Department of Sericulture, UAS, GKVK, Bangalore- 65 during 2013-14. The results revealed that, out of seven popular mulberry varieties (viz., V1, S36, S34, S30, S13, MR2 and RFS175), V1 recorded maximum leaf moisture content (75.34%), leaf moisture retention (69.31%, 68.13% and 66.34% at 06, 09 and 12 hours after harvest, respectively), plant height (52.02cm, 78.88cm and 182.06cm on 30th, 40th and 60th day after pruning, respectively), shoots per plant (13.33), number of leaves (146.33/plant) and leaf yield (3.56MT/ha/crop) compared to other varieties. Further, total soluble proteins (23.74%), carbohydrates (23.87%), starch (12.23%) and total soluble sugars (13.41%) were also found significantly higher in V1 mulberry leaves. While the chlorophyll – a, b and total chlorophyll contents were recorded significantly maximum in S36 leaves (1.45mg/g, 0.63mg/g and 2.08mg/g) followed by V1 leaves (1.446mg/g, 0.625mg/g and 2.071mg/g). Significantly higher third, fourth and fifth instar larval weight (0.118g, 0.62g and 3.89g), effective rate of rearing (98.30%), cocoon weight (1.897g), pupal weight (1.559g), shell weight (0.337g), shell ratio (17.75%), silk productivity (4.67cg/day) and cocoon filament length (875.92m) with significantly minimum fourth and fifth instar larval durations (4.12 and 7.21 days), filament denier (2.01) and larval mortality (0.17%) were observed when PM×CSR2 larvae were fed on V1 mulberry leaves. The silkworm hybrid (PM×CSR2) performed excellently when provided with V1 mulberry leaves compared to other mulberry varieties raised through UAS-Seri Suvarna Technology with protective irrigation. |
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Date |
2016-10-25T13:56:04Z
2016-10-25T13:56:04Z 2014-07-08 |
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Type |
Thesis
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Identifier |
TH-10778
http://krishikosh.egranth.ac.in/handle/1/81836 |
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Language |
en
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Format |
application/pdf
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Publisher |
University of Agricultural Sciences GKVK, Bangalore
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