Breeding of silkworm races for obtaining flavonoid-rich cocoons

The pigment 'flavonoid' which has antioxygenation came to attract attention. With it, offers of colored cocoon races containing flavonoid came to be demanded as to silkworm, Bombyx mori. To reply to these offers we carried out breeding of Japanese and Chinese parental races for making Fsub...

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Bibliographic Details
Published inJournal of Dainippon Silk Foundation (Japan) no. 55
Main Authors Iida, N.(Institute of Sericulture, Ami, Ibaraki (Japan)), Tsurui, Y, Tanaka, Y, Tsuneyama, I
Format Publication
LanguageJapanese
Published 01.12.2007
Subjects
AMELIORATION DES ANIMAUX
ANIMAL BREEDING
BOMBYX MORI
CAPULLOS
COCON
COCOONS
COLOR
COLOUR
COULEUR
F1 HYBRIDS
FLAVONOIDE
FLAVONOIDES
FLAVONOIDS
HIBRIDOS F1
HYBRIDE F1
MEJORAMIENTO ANIMAL
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Summary:The pigment 'flavonoid' which has antioxygenation came to attract attention. With it, offers of colored cocoon races containing flavonoid came to be demanded as to silkworm, Bombyx mori. To reply to these offers we carried out breeding of Japanese and Chinese parental races for making Fsub(1) hybrid of green cocoon by using 'Daizo' which is a green cocoon race of genetical stock and is assumed to contain much flavonoid. As a result, an effect of the selection appeared in both of BNg and BCg parental races. Their cocoon color became darker and nearly uniform, and on the genotype which is related to the cocoon color, it was concluded that major genes are the dominant homozygote in both races, based on the result of test-cross for these ones. However, uneven dark color may come out in future depending activities of minor genes which are effective to cocoon color, if any. Therefore, it is important to continue selection for maintaining cocoon color. These Fsub(1) hybrids, BNg x BCg and BCg x BNg, were named as 'Ryokken 1 gou' and were tested at the farm for practical use.
Bibliography:L10
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