Tunas Air: Variasi Kemunculan dan Pengaruhnya terhadap Pertumbuhan Tanaman Jati (Tectona grandis)
Abstract: Epicormic shoot is
an adventitious shoot appearing from the dormant buds. The formation of the
shoots is influenced by environmental conditions such as drought, excessive
crown opening (by thinning) or by shoot death, but genetic factor also plays a
role. Epicormic shoot is assumed to negatively affects plant growth. The study
aims to identin) family variation in tendency to form epicormic shoots and to
examine the effect of epicormic shoots on seedling growth of teak.
The study was conducted in 2006 on teak plantation in compartments 37b,
38c, and 38d, RPH Mangkang, BKPH Mangkang, KPH Kendal. Plant materials used
were 6-month teak plantation named as prospective teak plantation (Jati
Prospektip. The research was done in Randomized Completely Block Design using
28 seedlots/families (clone number 1 to 28), 3 treeplots, and 3 blocks as
replication; and 2 silvicultural treatments i.e. with epicormic shoots and
without epicormic shoots (shoots being cut).
Results showed that seedlots with the highest tendency to form epicormic
shoots were number 5, 18, and 25, while those with the lowest tendency were 6,
10 and 12. The existence of epicormic shoots negatively affected plant growth
both on height and stem diameter. In two months, height and stem diameter
growth of plants without epicormic shoots were 81.0 cm and 1.29 cm
respectively, while those with epicormic shoots were only 69.1 cm and 1.13 cm
respectively. Two families showing the highest growth performance were families
14 (with height and diameter growth of 95.6 cm and 1.50 cm) and 22 (94.2 cm and
1.47 cm).
Keywords: epicormic shoots,
teak, seedlots, plant growth
Penulis: Eny Faridah, Sapto
Indrioko, Tuharno
Kode Jurnal: jpkehutanandd090003
