Cross compatibility between Brassicoraphanus (Brassica oleracea x Raphanus sativus) and cruciferous crops, and rescuing the hybrid embryos through ovary and embryo culture

Cross compatibility between clubroot resistant Brassicoraphanus and susceptible or unsusceptible cruciferous crops was investigated. Pollen germination rate was high in all the crosses. Numbers of ovules survived were almost the same in all the outcrossings as those in self-pollinated Brassicoraphan...

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Published inJournal of the Faculty of Agriculture, Kyushu University Vol. 37; no. 1
Main Authors Long, M.H. (Kyushu Univ., Fukuoka (Japan). Faculty of Agriculture), Xing, G.M, Okubo, H, Fujieda, K
Format Journal Article
LanguageEnglish
Published 01.12.1992
Subjects
BRASSICA OLERACEA
CRUCIFERAE
CULTIVO DE EMBRIONES
CULTURE D'EMBRYON
FECONDATION
FECUNDACION
GINECEO
GYNECEE
POLINIZACION CRUZADA
POLLINISATION CROISEE
RAPHANUS SATIVUS
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Summary:Cross compatibility between clubroot resistant Brassicoraphanus and susceptible or unsusceptible cruciferous crops was investigated. Pollen germination rate was high in all the crosses. Numbers of ovules survived were almost the same in all the outcrossings as those in self-pollinated Brassicoraphanus seven days after pollination (DAP), whereas they decreased rapidly by 15 DAP. The hybrid embryos were observed 25 DAP and degeneration of the endosperms and embryo was initially observed 27 DAP. The crossability was different when different pollen parents were used. Hybrids of Brassicoraphanus with Raphanus sativus were obtained easily, whereas those with Brassica were not. It is suggested that the genome incompatibility may be one of the causes of the cross incompatibility between Brassicoraphanus and cruciferous crops. Hybrids difficult to obtain in vivo were effectively obtained through embryo culture
Bibliography:9302623
F63
F30
ISSN:0023-6152