ПРОУЧВАНЕ ВЪРХУ ХЕТЕРОЗИСНИТЕ ПРОЯВИ И ТИПА НА УНАСЛЕДЯВАНЕ В F1 НА ТЕХНОЛОГИЧНИ ПРИЗНАЦИ НА СУРОВИТЕ ПАШКУЛИ ПРИ МАРКИРАНИ ПО ПОЛ НА СТАДИИ ЛАРВА ПОРОДИ И ХИБРИДИ НА КОПРИНЕНАТА ПЕПЕРУДА (BOMBYX MORI L.)

ДИАНА АРКОВА ПАНТАЛЕЕВА, ЙОЛАНДА ВАСИЛЕВА, ПАНОМИР ЦЕНОВ

Abstract: During the period 2007 - 2011, at the Sericulture and Agriculture Experiment Station (SAES), Vratsa a study was conducted of silkworm hybrids, obtained from four sex-limited for larval markings breeds, /Vratsa 2003, Vratsa 2006, Vratsa 2007 and Vratsa 2012 and two ordinary breeds - Vratsa 54 and Vratsa 55. It was found out that the highest fresh cocoon weight and shell weight performed the hybrids Vratsa 2007 x Vratsa 2012 and the reciprocal cross and Vratsa 2006 x Vratsa 55. The hybrid Vratsa 2007 x Vratsa 2012 and the reciprocal cross are characterized with comparatively very high silk shell percentage - over 23%. There have been detected high heterosis expressions for the mid-parental value /MP/ as for the fresh cocoon weight and shell weight in the F1 hybrids, having as parents sex-limited for larval markings breeds. The inheritance in F1 of fresh cocoon weight and shell weight characters is in the type of positive overdominance.

Keywords: хетерозис; хибриди; полово ограничени породи; копринена буба; технологични признаци

Date published: 2023-02-01