Studies on the Mode of Action of the Diapause Hormone in the Silkworm, Bombyx Mori L. Vi. the Target Organ of the Diapause Hormone
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Studies on the Mode of Action of the Diapause Hormone in the Silkworm, Bombyx Mori L. I. the Action of Diapause Hormone Injected into Pupae of Different Ages
The effect of temperature on the voltinism of the silkworm, Bombyx rnori, was discovered by Watanabe (1918) over 45 years ago. This followed the rinding of the important role of photoperiod during the incubation period of silkworm eggs (Kogure, 1933). In brief, whether diapause or non-diapause eggs are laid depends on temperature and light experienced by the mother during her embryonic life. In...
متن کاملMolecular size of the diapause hormone of the silkworm Bombyx mori.
The diapause hormone (DH) responsible for arrested development of the silkworm Bombix mori consists of two active principles of peptide (A and B). Since both hormones form aggregates in aqueous phases, the molecular weights were determined by gel permeation chromatography of Merckogel OR 6000 using methanol-dichloromethane mixture as the developing agent. Gramicidins and modified peptides solub...
متن کاملSynergetic Effects of Potassium and Magnesium Chloride on Biochemical Contents of the Silkworm, Bombyx mori L.
The present study deals with the oral supplementation with (50, 100 and 150 ?g/ml) synergetic effect of potassium and magnesium chloride on the fat body glycogen, protein, total lipids and haemolymph trehalose, protein of fifth instar larvae of Bombyx mori L (Lepidoptera: Bombycidae). The observed parameters significantly increased in all the treated groups when compared with those of the corre...
متن کاملEffect of Salicylic Acid on Commercial Traits of the Bivoltine Crossbreed Races of the Silkworm, Bombyx mori L.
Topical application with 100, 200 and 300 ng/ml phytohormone salicyclic acid on commercial traits was analysed in bivoltine CSR2, CSR4 and CSR2XCSR4 crossbreed races of the silkworm, Bombyx mori L. The results showed that there was significant increase in larval weight female cocoon weight, male cocoon shell weight, and hatching percentage with 100 and 200 ng/ml, silkgland weight, female cocoo...
متن کاملThe Effects of Potassium Bromide on Biochemical Contents of the Fat Body and Haemolymph of Crossbreed Races of the Silkworm, Bombyx mori L.
Oral supplementation with potassium bromide (10, 20 and 40 ?g/ml) to fifth instar larvae of CSR2, CSR4 and CSR2xCSR4 crossbreed races of the silkworm, Bombyx mori resulted in a significant increase in the fat body glycogen in all the treated groups and in all the three races of the silkworm, B. mori. The fat body protein content was increased with 20 and 40 ?g/ml treated groups in CSR2 and CSR4...
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تاریخ انتشار 2005