Analysis of Stability parameters in the bivoltine breeds of silkworm Bombyx mori L
Journal Title: Scholars Academic Journal of Biosciences - Year 2014, Vol 2, Issue 2
Abstract
Abstract: Genotype-environment (G-E) interaction and stability parameters were analyzed for ten each of oval and dumbbell silkworm bivoltine genotypes reared during three different seasons of the year. Quantitative economic traits viz., fecundity, cocoon yield / 10000 larvae by number, cocoon yield / 10000 larvae by weight, cocoon weight, shell weight, cocoon shell percentage, filament length, denier, raw silk percentage, renditta, neatness and boil-off loss were evaluated. The mean sum of squares (MS) for the breeds and environments was highly significant in both oval and dumb-bell breeds in respect of all the traits except for renditta clearly indicating substantial variation among the breeds and seasons. However, the G-E interaction was found to be non-significant for all the traits among oval breeds, while among the dumb-bells, only four traits, namely, yield by number, yield by weight, filament length and neatness showed significant G-E interaction. Two stability parameters, viz., regression coefficient (bi) and deviation from regression (s2di) were analyzed in both oval and dumb-bell breeds, which showed significant differences for most of the traits. Based on values of the two stability parameters for the 12 economic traits and cumulative ranking, CSR2, JPN8 (oval) and CSR16 (dumb-bell) were found to be stable genotypes, while, S5 (oval) and BBE267 (dumb-bell) were the least stable. Keywords: silkworm breeds, G-E interaction and stability analysis
Authors and Affiliations
Veeranna Gowda, Ashwath SK, Kalpana GV
Keywords
Related Articles
- EP ID EP377782
- DOI -
- Views 81
- Downloads 0
Prevalence of Erythroplakia and Leukoplakia among the tobacco users aged above 60 years in rural area of Pondicherry
Abstract: Tobacco is a potential risk for malignancy in oral cavity and is widely prevalent among all types of tobacco users. It is important to estimate the pre malignant lesions among the selected age group of tobacco...
Potential Aromatic Plants in Khandesh Region of Maharashtra (India): A Census
The present communication sheds light on the availability and potentiality of aromatic plants in Khandesh region of Maharashtra (India). A total of 75 angiospermic species belonging to 61 genera and 34 families have been...
Study Using Natural Ingredients in Polluted Water Filtration in the prototype SPL Up flow
Abstract: The research objective was to determine the effectiveness of the use of natural materials as filter and effectiveness of the thickness of the filter in the filtration of water contaminated with upflow SPL proto...
Biosynthesis of Silver Nanoparticles from Silver Resistance Bacteria Isolated From Metal Contaminated Soil
Nanotechnology involving synthesis and applications of nanomaterials is a rapidly growing field with significant applications in various areas. The attraction of silver nanoparticles (AgNPs) is mainly because of its appl...
Optimization of Chemical Disinfection Conditions to Reduce Microbes in Spice Products
Due to the environment in which they are grown, spices and herbs often harbor large numbers of bacteria and fungi, including potential spoilage organisms and occasionally organisms of public health significance. Although...