Abstract

A procedure has been developed to obtain complete plants from meristems of three cultivars of Pisum sativum L., namely «Century», «Laxton's Progress» and «Afghanistan». Benzyladenine (BA) alone or in combination with naphthaleneacetic acid (NAA) at molar concentrations of 5 × 10−7 and 10−6, respectively, induced shoot differentiation in meristems cultured on B5 medium at 26° C, 60 % relative humidity and exposed to fluorescent light (4000 lux, photoperiod 18 hrs). When applied alone, NAA induced complete plant formation. Root formation, on the shoots produced by culturing meristems, was induced by reculturing the shoots, 2 cm long, on half strength B5 medium supplemented with NAA at a concentration of 10−6 M. Aus isoliertem Meristem von Pisum sativum L. cv. Century, Laxton's Progress und Afghanistan wurden in vitro Pflanzen herangezogen. Bei Verwendung des Nährmediums B 5 wurde Sproßbildung durch Zusatz von 5 × 10−7 M Benzyladenin allein oder in Kombination mit 10−6 M l-Naphthylessigsäure (NES) induziert. Weitere Kulturbedingungen: 26° C, 60% rel. Feuchtigkeit, Fluoreszenzlicht von 4000 lux in Höhe der Pflanzen, Photoperiode 18 h. Wurzeln bildeten sich, wenn Sprosse von 2 cm Länge isoliert und auf halb verdünntem B 5-Nährmedium mit 10−6 M NES kultiviert wurden. Übertragung von Meristemen auf unverdünntes B 5-Nährmedium mit 10−6 M NES führte zur Entwicklung bewurzelter Sprosse.

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