• International Journal of Industrial Entomology and Biomaterials
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• v.8 no.2
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• pp.181-187
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• 2004

Polyvoltine silkworm breeds/hybrids play an important role in tropical sericulture. In the process of synthesizing more potential polyvoltine hybrids(polyvoltine${\times}$bivoltine) of superior quantity and quality, the Andhra Pradesh State Sericulture Research and Development Institute (APSSRDI) has developed 8 promising polyvoltine breeding lines (SDMG2, APM16, APM15, APM14, APM5, RM2, APM3, APM13). In order to study their hybrid vigour and performance, these breeds were crossed with 4 potential bivoltine testers (SDD1, SDD2, SDD3, APS8), and 32 different hybrid combinations were prepared and evaluated for their mid parent heterosis (MPH) and better parent heterosis (BPH) of silk productivity. Since silk is the ultimate product required for commercial purpose, based on silk productivity and its heterosis, three superior polyvoltine hybrid combinations namely RM2${\times}$APS8 (24.3%), APM3${\times}$APS8 (12.4%) and APM15${\times}$SDD2 (10.8%) were adjudicated as potential heterotic hybrid combinations of superior silk yield and hence recommended for further large scale field trails and commercial exploitation.

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2001.05a
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• pp.104-104
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• 2001

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2003.10a
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• pp.123-125
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• 2003

We provide a molecular study intending to derive an estimate of the relationships within the genus Bombus, 10 species which span 6 subgenera common collected from several regions of Korea and B. terrestris imported from several foreign countries for pollination using a portion of mitochondrial 16S ribosomal RNA. (omitted)

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2003.10a
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• pp.76-76
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• 2003

We describe here the identification of a transcription factor, ATFC that regulates the UPR by binding to the UPRE only when the signaling pathway is activated. The data in this study cover the first set of results, showing that ATFC has a major role in the insect UPR. (omitted)

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2003.10a
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• pp.53-54
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• 2003

The silk fibroin has been widely used as industrial materials such as cosmetics and food l)-2). In this study, general hydrolysate of B. mori fibroin as a biomaterial, development of functional-cometics included hydrolysate of B. mori fibroin will be discussed. (omitted)

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2003.10a
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• pp.155-156
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• 2003

The Coleoptera is one of the most species-rich order of animals, adapted to most terrestrial and freshwater aquatic habitats. Among them, the mulberry longicom beetle, Apriona germari Hope, is widely distributed in eastern Asia and became one of the major pests of mulberry tree in Korea. To obtain genetic information on the mulberry longicorm beetle, we have constructed cDNA library from the larvae whole-body. Here, we report Apriona germari ESTs profiles determined the 5'most end of 3072 clones. (omitted)

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2003.10a
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• pp.141-142
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• 2003

Partial cDNA sequencing to generate expressed sequence tags (ESTs) is being used at present for the fast and efficient obtainment of a detailed profile of genes expressed in various tissues, cell types, or developmental stages. We describe here the construction, DNA sequencing and sequence profiles of cDNA library from Uroctea lesserti. (omitted)

• Proceedings of the Korean Society of Sericultural Science Conference
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• 2003.10a
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• pp.126-127
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• 2003

This study was investigated total flavonoid and phenolic contents, heavy metals, et al. fer standardization on the south Korean propolis. The propolis collected from the whole part of South Korea, such as central, southern and Jeju island. (omitted)

• International Journal of Industrial Entomology and Biomaterials
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• v.9 no.1
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• pp.107-109
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• 2004

The present investigation reports a phenomenon hitherto unknown in tropical sericulture, wherein dia-pause nature of bivoltine eggs is overcome through a cross with a non-diapausing race of silkworm, Bombyx mori, L. Eggs of bivoltine silkworm Bombyx mori, L. generally do not hatch under tropical conditions. To prevent diapause, they are subjected to acid treatment or low temperature hibernation scheduled. A race developed at KSSRDI is found to prevent the diapause nature of bivoltine eggs when crossed as male parent, without any acid treatment or hibernation schedule. This phenomenon is reported for the first time, being unique, opens up interesting area of research in silkworm genetics of commercial implications in the industry.

• International Journal of Industrial Entomology and Biomaterials
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• v.7 no.1
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• pp.87-91
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• 2003

BmNPV (Bombyx mori nuclear polyhedrosis virus) causes nuclear polyhedrosis in silkworms. The tolerance of silkworms to BmNPV is controlled by polygenes. This paper reports on the relative tolerance of silkworm breeds among the germplasm maintained at Andhra Pradesh State Sericultural Research ＆ Development Institute (APSSRDI), Hindupur, India. The silkworm larvae out of second moult were per orally inoculated with BmNPV polyhedra $(l{\times}l0^{th}//ml)$ and reared upto spinning. The response to BmNPV had been categorized into apparent tolerance, real tolerance and susceptibility. Among the 145 silkworm breeds screened, 18 bivoltines and 16 polyvoltines were found to have real tolerance to BmNPV.