Performance of silkworm

Understanding the genetic basis of phenotype variations during domestication and breeding is of great interest. Epigenetics and epigenetic modification enzymes (EMEs) may play a role in phenotypic variations; however, no comprehensive study has been performed to date.

11p vijeeni2711 30-06-2021 7 1   Download

The present investigation was carried out to assess the rearing performance of silkworm Bombyx mori L. on antibiotic supplemented feed at various concentrations. The study was conducted on the silkworm breed APS-45. The worms were reared upto 3rd moult by feeding on mulberry leaves without any treatment.

7p trinhthamhodang11 27-04-2021 6 1   Download

In the present study, susceptibility of the silkworm, Bombyx mori to the pathogens of mulberry pest Glyphodes pyloalis was ascertained. Silkworm, Bombyx mori inoculated with the pathogens isolated from G. pyloalis (Microsporidian and Nuclear Polyhedral Virus) showed high mortality at larval and pupal stages. Silkworms inoculated with Microsporidian showed mortality of 53.66% at larval stage whereas silkworms inoculated with Nuclear Polyhedral Virus showed mortality of 61.00% at larval stage.

10p trinhthamhodang11 27-04-2021 12 1   Download

Studies on different tree mulberry genotypes on rearing performance of silkworm (Bombyx mori L.) was carried out to identify the best performing genotypes based on the bioassay performance of silkworm cross breed PM x CSR2 during rainy, winter and summer seasons of 2018-19at the Department of Sericulture, University of Agricultural Sciences, GKVK, Bangalore. The present study comprised of six mulberry genotypes viz., MI-012, MI-79, MI-21, MI-139, MI-516, ME-05 and two check varieties V1 and M5.

9p trinhthamhodang9 16-12-2020 14 3   Download

The study revealed that, application of seriwaste bio-digester effluent to mulberry along with other organic manures increased the rearing and cocoon parameters providing all the essential nutrients for mulberry growth compared to application of sole inorganic fertilizers and in turn it contributed for quality cocoon production. Utilization of sericulture waste generated during mulberry cultivation and silkworm rearing leads to generate additional income, entrepreneurship development in sericulture and value addition in turn contributing to achieve sustainability in sericulture.

5p angicungduoc6 22-07-2020 7 1   Download

A comparative experiment study was carried out with chawki and direct brushing tasar silkworm on the tasar silkworm’s host plant Arjun leaves. The chawki method was carried out during I and II instars larva followed succeeding instars brushed in common plot whereas, direct brushing method was reared entire life cycles in common block plantation plots. The results indicated duration of silkworm larva was observed four days earlier with reared in chawki method than direct brushing method. Mortality rate of silkworm was found minimum under Chawki method.

5p angicungduoc6 20-07-2020 8 1   Download

The present investigation was carried out at Central Sericultural Research and Training Institute, Pampore, Jammu & Kashmir (J&K) during spring, summer and autumn, 2017 to study the performance of eleven silkworm, Bombyx mori L, breeds (CSR2, CSR6, CSR27, CSR26, CSR50, PAM114, PAM117, APS4, APS5, SK6 and SK7) of different origin under temperate climatic conditions.

10p gaocaolon5 14-06-2020 7 1   Download

The study was conducted to evaluate the performance of different fabricated mountages viz., spiral mountage, square mountage and zig-zag mountage in comparison with Thalaghattapura ribbon chandrike, plastic collapsible mountage and bamboo mountage on various cocoon reeling parameters by using two different silkworm hybrids viz., the cross breed (CB) (PM x CSR2) and the double hybrid (DH) (Krishnaraja) and data were recorded on various cocoon reeling parameters.

8p nguaconbaynhay4 22-03-2020 11 1   Download

Silkworm seed technology laboratory, Kodathi is producing P2 Dfls through Race maintenance programme in limited manner to supply selected Basic seed farms to rear and generate P1 seed cocoons for hybrid preparation to West Bengal in the event of seed crop failures. In the present investigation, Nistari ecotypes Chalsa, Balapur and Debra, M6DPC were evaluated almost for 5 years. The mean performance of these breeds was shown significant differences for the majority of the traits with excellent pupation rate.

7p quenchua2 15-12-2019 9 1   Download

A study was undertaken in farmer’s field condition by utilizing established five tree mulberry gardens of one-year-old and above and one bush mulberry garden as a control in each of the Chikkaballapura and Kolar Districts. The silkworm hybrids namely PM×CSR2 in Chikkaballapura cluster and double hybrid (FC1×FC2) in Kolar cluster were reared on leaves harvested from both tree and bush mulberry plantations and economic parameters were recorded.

6p quenchua2 15-12-2019 12 0   Download

The present investigation was carried out at Central Sericultural Research and Training Institute, Pampore, Jammu & Kashmir (J&K) during spring, summer and autumn, 2018 to study the performance of 24 bivoltine silkworm, Bombyx mori L, foundation crosses (12 Oval & 12 Constricted) under temperate climatic conditions. The rearing was carried out under uniformed laboratory condition by adopting standard method. These 24 bivoltine silkworm foundation crosses (FC) were evaluated for their performance in eight metric traits viz., fecundity (No.

11p nguaconbaynhay1 04-12-2019 10 0   Download