KAJIAN PENGGUNAAN PACLOBUTRAZOL TERHADAP PERTUMBUHAN SEMAI AGATHIS LORANTHIFOLIA
ABSTRACT: Paclobutrazol is one
of hormone which able to inhibit the growth of tree seedling. This kind of hormone is usually used
extensively in horticulture in stimulating
flowering and enhancing fruiting. The
objective of the research was to know the effect of paclobutrazol on the growth
of Agathis loranthifolia seedlings during storage under different condition, in order to support seedling supply programs for
forest establishment and rehabilitation. There were two factors of the trial
i.e.) growth inhibitors (paclobutrazol,
NaCl and aquadest) and 2) storage conditions (growth house, heavy shading and
light shading). A complete randomized
design with two factors and 3 replication were used in this trial. The result
of the research showed that the treatment of paclobutrazol to the seedlings
stored at a green house gave an effect
to the height and diameter growth of Agathis loranthifolia seedlings which were
lower than those treated by NaCl and aquades.
While paclobutrazol treated seedlings
stored under light shading, gave
higher value of seedling height and diameter than those stored under green
house condition and heavy shading.
The highest value of seedling
survival Agathis loranthifolia achieved by paclobutrazol treated seedlings
which were stored at the green house and
under light shading. Field testing after 3 months plantation showed that paclobutrazol –
treated seedlings and seedlings, stored
under light shading gave a highest value of seedling survival (100%) and
seedling quality index (0,095).
Keywords: paclobutarazol
hormone, seedling storage technique, recalcitrant seed, seedling survival, seedling quality index
Penulis: OMBO SATJAPRADJA, L.
SETYANINGSIH, D. SYAMSUWIDA dan A. RAHMAT
Kode Jurnal: jpkehutanandd060035
