COMBINING ABILITY EFFECTS IN SILKWORM, Bombyx mori L. BY DIALLEL CROSS
نویسندگان
چکیده
منابع مشابه
Vertical transmission of nucleopolyhedrovirus in the silkworm, Bombyx mori L.
Nucleopolyhedrovirus (NPV) was tested for vertical transmission in the silkworm, Bombyx mori. Fifth instar larvae were exposed to four different dosages of BmNPV (830, 1300, 1800, and 2000OBs/larva) and a dosage of about 2000OBs/larva was found suitable for obtaining infected adults. Histopathological studies revealed the infection in susceptible tissues and organs initially, and at later stage...
متن کاملHeterosis and combining ability estimates for the total number of eggs laid per female in silkworm, Bombyx mori L
Heterosis and combining ability for total number of eggs laid per female silkworm Bombyx mori L were investigated in a six parent diallel crossing programme in four rearing seasons. Magnitude of heterosis varied from seasons to season and was not consistent over characters. Effect of season was important in the expression of genetic variances and other parameters studied. Considerable amount to...
متن کاملBlastoderm formation in the silkworm egg (Bombyx mori L).
Embryogenesis in the egg of the silkworm. Bombyx mori, up to 24 h after oviposition was studied by light microscopy with special reference to nuclear migration and blastoderm formation. In Bombyx eggs blastoderm cells seem to form in a mechanism different from that usually seen in many other insect species; that is, in Bombyx eggs no typical cleavage furrows were seen. Cleavage nuclei which had...
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Context: To gain a better understanding of the nature of gene action involved in the inheritance of quantitative characters can be obtained through the use of diallel cross analytical approach for the choice of desirable parents and the formulation of an effective breeding programme. Objectives: The aim was to study the nature and magnitude of gene action of inheritance for quantitative traits,...
متن کاملCharacterization of Klebsiella granulomatis pathogenic to silkworm, Bombyx mori L.
Bacterial disease of silkworm causes significant reduction of silk production leading to huge economic loss. This study aims to isolate bacteria from diseased silkworm and to determine its pathogenicity and antibiotic resistance. A strain of Klebsiella granulomatis has been isolated from silkworm haemolymph which was later identified on the basis of biochemical tests and 16S rRNA gene sequencin...
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ژورنال
عنوان ژورنال: Journal of Agricultural Chemistry and Biotechnology
سال: 2013
ISSN: 2090-3707
DOI: 10.21608/jacb.2013.52986