(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

(21)Application number: 87303778.2

(22)Date of filing:  28.04.1987
(51)International Patent Classification (IPC)4C12N 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)


(56)References cited: : 
  
      


    (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.





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