Evaluation of bivoltine single and double cross hybrids of silkworm, Bombyx mori L. for grainage parameters

Autor:	K. C. Narayanaswamy, R. Govindan, B. L. Visweswara Gowda, M. C. Devaiah, T. K. Narayanaswamy
Rok vydání:	1991
Předmět:	Horticulture biology Pupal weight Bombyx mori Hatching Heterosis Insect Science Voltinism biology.organism_classification Fecundity Ecology Evolution Behavior and Systematics Hybrid
Zdroj:	International Journal of Tropical Insect Science. 12:433-437
ISSN:	1742-7592 1742-7584
Popis:	Grainage parameters, viz. pupal weight, rate of moth emergence, fecundity and hatching were studied among four bivoltine pure races and their five single and four double cross hybrids of silkworm Bombyx mori L. The significant increase in double cross hybrids over pure races was 11.72, 7.43,19.45 and 12.26% for pupal weight, rate of moth emergence, fecundity and hatching, respectively. The fecundity in double cross hybrids improved significantly over single cross hybrids to the extent of 16.03% whereas pupal weight, rate of moth emergence and hatching increased to the extent of 4.38, 5.90 and 5.76%, respectively. The extent of standard heterosis and heterobeltiosis was maximum in double cross hybrids and the heterosis was more pronounced for fecundity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de96a777489a1a5a1ee586bdeb114278 https://doi.org/10.1017/s1742758400011322 Zobrazit plný text záznamu Full text from SpringerLink