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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
 
Creator N S, MAMATHA
 
Contributor FATIMA SADATULLA
 
Subject inorganic acid salts, limes, farmyard manure, fractionation, acidity, iron, additives, poultry equipment, inorganic compounds, soil sciences
 
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.
 
Date 2016-10-25T13:56:04Z
2016-10-25T13:56:04Z
2014-07-08
 
Type Thesis
 
Identifier TH-10778
http://krishikosh.egranth.ac.in/handle/1/81836
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences GKVK, Bangalore