Regeneration of plantlets from leaf and petiole explants of Pelargonium x hortorum
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The in vitro plant regeneration potential of vegetatively propagated geraniums (Pelargonium x hortorum) has been investigated. Using various combinations of growth regulators and a choice of different explants, a regeneration protocol has been developed to raise in vitro plantlets from young petiole and leaf explants from three different cultivars of geraniums. In all three cultivars, very young petiole explants exhibited a higher regeneration potential as compared with leaf explants. Regeneration efficiencies were found to be highly dependent on the cultivar, with cv. Samba showing the highest regeneration potential, followed by cvs. Yours Truly and then Sincerity. Samba also showed the highest number of shoots from both the petiole [57 shoot buds per petiole explant in the presence of 3 μM zeatin and 1 μM indole-3-acetic acid (IAA) and leaf explants (43 shoots per leaf explant with 10 μM zeatin and 2 μM IAA). Shoot buds transferred to Murashige and Skoog (MS) medium supplemented with 0.44 μM N6-benzyladenine and 0.11 μM IAA grew vigorously and attained 1–2 cm in length in 3–4 wk. These shoots rooted with 100% efficiency on MS basal medium, and plants developed that showed normal growth and flowering under greenhouse conditions.
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- Regeneration of plantlets from leaf and petiole explants of Pelargonium x hortorum
In Vitro Cellular & Developmental Biology - Plant
Volume 36, Issue 5 , pp 392-397
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