Rooting ability of stem cuttings on Rubus ellipticusvar. obcordatusin a greenhouse at Lam Dong province, Vietnam
Keywords:
Growt chemical substance,, Rubus ellipticusvar. obcordatus, cutting propagationAbstract
Research on cutting propagation of Rubus ellipticus var. obcordatus by
cuttings method to find the auxins and their suitable concentration .
This study evaluated the effects of plant growth regulators IAA and
NAA with different contents (0.5%; 1%;1.5%; 2%) on rooting of Rubus
ellipticus var. Obcordatus. The research results showed that using IAA 0.5%
for rooting rate reached to 70.00%, the roots number/cutting was 17.19
roots and the root length/cutting was 8.46 cm; using NAA 1.5% for
rooting rate reached to 70.00%, the roots number/cutting was 19.33 roots
and the root length/cutting was 8.70 cm; using NAA 2% for rooting rate
reached to 73.33%, the roots number/cuttings was 14.45 roots and the
root length/cuttings was 9.8 cm. Rooting ability is strongly influenced by
the growth regulators content. The recommended suitable contents for
cutting propagation were IAA (0.5%) and NAA were 0.5 to 2% with rooting
rate about 60 - 70%
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