Study on New F1 Silkworm Hybrids with regards to the Values of Some Quantitative characters Influencing Silk Production
Keywords:
Bombyx mori L., hybrids, quantitative charactersAbstract
The present research paper aims at studying the newly created silkworm hybrids regarding some
important quantitative characters, which have influence on silk production. The study was conducted
in the Agricultural University of Plovdiv in the period 2020–2021. The following newly created F1
hybrids were examined: Vratsa 63хLine22 х Nig2хMerefa6 and Nig2хMerefa6 х Vratsa 63хLine22.
The industrial hybrid Super 1 x Hesa 2 was used as a control. The received results showed that the
new hybrids domineered over the regional hybrid Super 1 x Hesa 2 with relation to the values of the
following features: eggs hatchability, pupation rate, as well as shorter larval period duration and the
fifth instar duration. These four quantitative characters are of a great importance for receiving high
yields of cocoons with a lower own-value.
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