PHƯƠNG PHÁP BẢO QUẢN KÉN GIỐNG LƯỠNG HỆ TẰM DÂU
Chuyên mục
Tạp chí thường kỳ
Tên bài
PHƯƠNG PHÁP BẢO QUẢN KÉN GIỐNG LƯỠNG HỆ TẰM DÂU
Tên tác giả
Phạm Thị Phương, Bùi Mạnh Thắng, Lê Hồng Vân, Trần Thị Bích Vân
Category
Monthly Journal
Title
Preservation of mulberry bivoltine seed cocoon methods
Author
Abstract
Mulberry bivoltine silkworm is very popular in Vietnam. The results showed that, after harvesting of cocoons from 1 day to 2 days they have to preserved seed cocoon on temperature 240C, so that pupation rate is higher and hibernaating eggs rate is lower than natural condition. Especially, no difference about economic index and biological index in next circlelife of silkworm between preservated in 240C and natural condition. In Ha Noi, preservation of seed cocoon pupation rate is higher and hibernating eggs rate is lower in summer season than spring season and autumn season.
Từ khoá / Keywords
bivoltine
seed cocoon
preservation
pupation rate
hibernating eggs.