Publisher: Bachudo Science Co. Ltd

Presence of Axillary Bud and Application of Plant Growth Hormones On Rooting and Tuberization of Yam (DIOSCOREA SP.) Vine C Uttings

Ndubisi Igwilo
KEYWORDS: Axillary buds, growth hormones, rooting and tuberi:zation., yam vine cutting

ABSTRACT:

Young cuttings of yam varieties Obiaoturugo (Dioscorea rotunda ta) and Um 680 (D. alata)- were grown in pots in the greenhouse. Half the cuttings bore axillary buds and half had none. The cuttings were sprayed with a factorial combination ofindole acetic acid (IAA), benzyladenine (BA) and giberellic acid (GA,). Cuttings of Obiaturugo survived better than those of Um680 and cuttings with lateral buds performed better than those without. IAA had no effect but GA, depressed rooting (p=0.05)and tuberization (p-0.01) of the cuttings. The results showed that in the presence of axillary bud in young cuttings, clean yamtubers can be raised in the greenhouse without recourse to use of mist chambers.


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