Study on propagating of Diospyros vaccinioides in Quang Ninh province
Keywords:
Diospyros vaccinioides, cutting, seedling, hoormonAbstract
Diospyros vaccinioides has medicinal value and is also popular as bonsai
but they grow very slowly, seed germination rate in the wild is very low. It
is ranked in the Convention of International Trade of Endangered Species
of Flora and Fauna because of the extent of habitat destruction and illegal
harvesting. This research aims to identify some methods of propagating D.
vaccinioides from seeds and cuttings. Seedling experiments using 03
formulas treatment temperature of water (40, 70 and 100
o
C), 03 formulas of
N3M concentration (10,000, 15,000 and 20,000 ppm) to stimulate seed
germination, 03 types of seedling substrate (100% soil, 90% soil + 10%
compost and 90% soil + 9.5% compost + 0.5% NPK). Cutting experiments
were conducted to identify the efficacy of N3M concentration (5.000,
10,000, 15,000 and 20,000 ppm), rooting substrate (100% river sand, 50%
river sand + 50% soil and 100% soil). The results showed that seeds treated
with 70
o
C of water for 12 hours had the highest germination rate (75.93%);
soaking seeds with N3M at a concentration of 15,000 ppm for 1 hour gives
germination rate of 70.00%; best seedling substrate is 90% soil + 9.5%
compost + 0.5% NPK. Treatment of cuttings with N3M at a concentration
of 10,000 ppm had the best rooting rate reaches (46.91%); river sand is best
suited for D. vaccinioides cuttings
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