Pertumbuhan Stek Batang Jarak Pagar (Jatropha curcas L.) dengan Perendaman Larutan Bawang Merah (Allium cepa L.) dan IBA (Indol Butyric Acid)
Abstract: Jatropha (Jatropha curcas L.)
need to be propagated since this plant has many benefits, it can be
applied to produce fuel, biodiesel and traditional medicine. The cultivation of
this plant can be utilized by stem cuttings, however the process can be failed if the root was not formed. The use
of Indole Butyric Acid (IBA) and onion extract which contain natural and synthetic growth regulators are needed to stimulate
the growth of cutting roots. The purpose
of this study was to investigate the effects
of onion extracts and Indol Butyric Acid (IBA) for
the growth of stem
cuttings of jatropha. The study
was conducted in a greenhouse at
the Department of Biology,
Faculty of Mathematics
and Natural Sciences
in University of
Tanjungpura fromOctober 2012
to January 2013.
This study employed
a randomized factorial
design of 2
factors. The first factor was
onion extracts and the second one was IBA. The concentrations in onion extracts
were 0% , 40%, 60%, 80%, 100% and IBA were
0 ppm, 10 ppm, 20 ppm, 30 ppm, 40 ppm.
Each treatment was repeated 3times as a result there were 75
experimental units. The treatment with
100% of onion extracts produced
the highest number of leaves (10.46 strands), air dried basis of shoots (44.91 g) and dry basis of shoots (7.39 g), while
the effect of treatment with IBA produced the best number of roots (16.93 strands), air dried basis of roots
(1.23 g) and dry basis of roots (0.51 g)
Penulis: Elly Siskawati, Riza
Linda, Mukarlina
Kode Jurnal: jpbiologidd130421
