(19) | |
| (11) | EP 0 244 211 A3 |
(12) | EUROPEAN PATENT APPLICATION |
(88) | Date of publication A3: | | 23.08.1989 Bulletin 1989/34 |
(43) | Date of publication A2: | | 04.11.1987 Bulletin 1987/45 |
(22) | Date of filing: 28.04.1987 |
| (51) | International Patent Classification (IPC)4: C12N 5/00 // A01N65/00 |
|
(84) | Designated Contracting States: | | CH DE FR GB LI |
(30) | Priority: | 28.04.1986 JP 99165/86
|
(71) | Applicant: NOYAKU BIOTECHNOLOGY KAIHATSU
GIJUTSU KENKYU KUMIAI | | Tokyo-to (JP) |
| (72) | Inventors: | | - Kawamura, Michio
Inashiki-gun
Ibaraki-ken (JP) - Yamazaki, Kiyomi
Inashiki-gun
Ibaraki-ken (JP)
|
(74) | Representative: Hildyard, Edward Martin et al | | Frank B. Dehn & Co.,
European Patent Attorneys,
179 Queen Victoria Street London EC4V 4EL London EC4V 4EL (GB) |
|
| |
(54) | Process for mass propagation of plant tissue in vitro |
(57) A process for mass propagation of
Phrymaleptostachya Linne which comprises culturing plant tissue of said plant
invitro using a culture medium comprising, as active ingredient, an effective amount of auxin and/or cytokinin. A preferred culture medium for propagating
Phrymaleptostachya Linne
invitro for the subsequent isolation of the insecticide
Haedoxane A obtainable therefrom is disclosed.