title: [Proteolytic enzymes as markers of productivity and heterosis of silkworm].
abstract: A positive correlation between the activity level of cysteine proteinases in developing eggs of common silkworm moth (Bombyx mori L.), on the one hand, and a set of commercial characteristics, on the other, was found. This allows the determination of cysteine proteinase activities (pH optima of 3.0, 3.6, and 8.6) to be recommended as a biochemical test for an early prediction of potential productivity of silkworm breeds. A positive correlation between the activity level of acid cysteine proteinases in eggs of parental breeds and a set of commercial characteristics of their hybrids was detected, indicating a principal possibility of predicting the degree of heterosis.
authors.forename: I D
authors.initials: ID
authors.lastname: Krylova
authors.forename: D V
authors.initials: DV
authors.lastname: Iarygin
authors.forename: Iu B
authors.initials: IuB
authors.lastname: Filippovich
mesh_terms: D000818:Animals; D012831:Bombyx / Q000201:enzymology*; D003546:Cysteine Endopeptidases / Q000378:metabolism*; D006823:Hybrid Vigor; D006868:Hydrolysis; D012697:Serine Endopeptidases / Q000378:metabolism*
chemical_list: D012697:Serine Endopeptidases; D003546:Cysteine Endopeptidases