Seasonal Effects on the Performance of Newly Evolved BivoltineHybrids of the Silkworm (Bombyx mori L) Under Tropics
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Abstract
Seasonal effects of the newly evolved bivoltine hybrids namely CSR2 × SR5, SR1 × SR4 and control hybrid KA × NB4D2 along with their parents SR1, SR4, SR5, CSR2 KA and NB4D2 were evaluated during different seasons of the year to understand genotype and environment interactions. Data were collected on five economic importance namely, pupation rate, cocoon yield, cocoon weight, cocoon shell ratio and filament length of the lines, hybrids and the control breeds/ hybrid in three different seasons i.e., Pre-Monsoon, Monsoon and post-monsoon and subjected to relevant statistical methods. Seasonal performance of CSR2, SR1, SR4 and SR5 revealed superiority over control breeds KA and NB4D2. Both the hybrids i.e., CSR2 × SR5 and SR1 × SR4 performed well under diversified environmental conditions of tropical climate in a year indicating overall stability. These hybrids revealed highly significant (P < 0.01) variations for majority of the traits studied over the control hybrid KA × NB4D2.
참고문헌 (20)
- Alister,Mc. L, "Heat shock proteinsand thermal resistance in yeast. Biochem. Biophys.Commun. 93", pp.819~824 (1980)
- Basavaraja, H. K., "Studies on the synthesis of productive bivoltine strains of Bombyx mori L. through hybridisation, selection and genetic evaluation." (1996)
- Carretero, "Thermo-tolerance and heat shock proteins in Chironmus. J.Insect Physil. 37", pp.239~246 (1991)
- Das, "Seasonaleffect on the relative performance of five bivoltine breeds ofsilkworm Bombyx mori L in Malda. U. P. J. Zool.", 15, pp.91~96 (1995)
- Datta, "Guidelines for bivoltine rearing" (1992)
- Gamo,T, "Genetic analysis ofgrowth rate", bombyx mori l. jpn. j.breed. 33, pp.178~190 (1983)
- Griffing,B, "Heterosis associated withgenotype environment interactions. Genetics 68", pp.443~445 (1971)
- Harada,C, "On the heterosis of quantitative charactersin Silkworm. Bull. Seric. Expt. Stn. 17", pp.50~52 (1961)
- Kalpana, G. V., "Seasonal studies on theperformance of the new multivoltine breed MU 953 in thetropics. Sericologia", 38, pp.451~456 (1998)
- Kempthorne,O, "The design and analysis of experiments.John Wiley and Sons Inc." (1952)
- Krishna Rao, S.,, "Evolution of newproductive bivoltine races for tropical conditions. Abstract inNational Conference on Tropical Sericulture for GlobalCompetitiveness 5-7 November", pp.19~ (2003)
- Krishnaswami,S, "Large scaletrials of bivoltine hybrids in Mysore state Indian J. Genet. Pl.Breed. 34", pp.229~236 (1974)
- Ren,L. L. L. Mini, "Stability of double crosshybrid combined with current silkworm varieties for springand early autumn under normal rearing condition. ActaSerica Sinica 14", pp.42~44 (1988)
- Mal Reddy, N.,, "Performance of newly evolved bivoltine silkworm hybrids of Bombyx mori with reference to hybrid vigour.", 7, pp.59~63 (2003)
- Maribashetty,V. G, "Evolution of superior bivoltineraces of silkworm Bombyx mori L. for tropics. Ph. D. Thesis" (1991)
- Narasimhanna,M. N, "Contributions to the genetics ofsilkworm. Ph. D. Thesis" (1976)
- Pillai,S .V, "Adaptability of silkwormBomyx mori L. to tropical conditions. III. Studies onthe effect of high temperature during later developmentalstages of silkworm. Indian J. Seric. 26", pp.63~71 (1987)
- Subramanya,G, "Eco-genetic approach for determinationof high yielding breeds of silkworm", university of mysore (1985)
- Sudhakara Rao, P.,, "Evaluationand identification of promising bivoltine hybrids of silkwormBombyx mori L.", 3, pp.31~35 (2001)
- Sudhakara Rao, P.,, "Evolution of a productive bivoltine hybrid of silkworm Bombyx mori L. (SD7 × SD12) with shorter larval duration.", 8, pp.27~32 (2004)
