Vegetative propagation of Dryobalanops sumatrensis and Dryobalanops oblongifolia subsp. oblongifolia by shoot cuttings

Abstract

The existence of Dryobalanops sumatrensis and D. oblongifolia subsp. oblongifolia in Indonesia’s natural forest is increasingly threatened due to land use changes and illegal logging leading to the urgent need of conservation actions in the field. Vegetative propagation by shoot cuttings has been proposed as an alternative method, yet there have been still lacks of information regarding the suitable rooting media and the use of shoots from saplings as cutting materials. This study was to evaluate the survival rate, rooting and shoot sprouting abilites of D. sumatrensis and D. oblongifolia subsp. oblongifolia on two different media (mineral soil and peat). Saplings of the D. sumatrensis aged older than 7 years old and D. oblongifolia subsp. oblongifolia aged less than 2 years old were used as cutting materials. The results showed that the survival rate of D. sumatrensis in peat (43.75%) and mineral soil media (43.75%) was lower than D. oblongifolia subsp. oblongifolia in for peat media (54.55%) and minerals soil media (71.88%). The rooting and shoot sprouting percentage of D. sumatrensis in peat and mineral soil media was also lower than D. oblongifolia subsp oblongifolia. This pattern revealed that the media treatment (peat and minerals) did not affect the survival rate and rooting ability of D. sumatrensis shoot cuttings, but has an effect on D. oblongifolia subsp. oblongifolia.

Effects of two contrasting potting media on the leaf development index, photosynthetic rate, and metabolite profile of camphor (Dryobalanops aromatica) seedlings

“…Soil water content was measured using the gravimetric method [ 15 ], and peat maturity was assessed using the handheld method [ 16 ]. Based on the results, the mineral medium was classified as clay loam with a pH of 5.0 and 32.09% water content, whereas the peat medium was classified as fibric peat with a pH of 4.0 and 135.32% water content [ 9 , 13 ].…”

“…Each type of plant in different habitat has a different rate of photosynthesis depending on its habitat. Furthermore, plant photosynthates are translocated toward vegetative and generative growth, including leaf formation [ 13 ].…”

Managing and Reforesting Degraded Post-Mining Landscape in Indonesia: A Review

“…The vegetative propagation of Melaleuca cajuputi has been practiced in the nurseries and produced a large number of planting stocks for reforestation [134]. Furthermore, the needs for planting native stocks for reclamation has been supported by the availability of propagation techniques for many native tropical trees, such as Taxus sumatrana, Styrax spp., and various species within the genus of Shorea, Hopea, Dipterocarpus, Drybalanops, Vatica, Parashorea, Upuna, Anisoptera, and Cotylelobium [135][136][137][138][139][140][141]. Thus, reforestation using native tree species becomes more feasible than it was several decades ago.…”

“…genus of Shorea, Hopea, Dipterocarpus, Drybalanops, Vatica, Parashorea, Anisoptera, and Cotylelobium [135][136][137][138][139][140][141]. Thus, reforestation using native tree becomes more feasible than it was several decades ago.…”

De novo assembly of transcriptome dataset from leaves of Dryobalanops aromatica (Syn. Dryobalanops sumatrensis) seedlings grown in two contrasting potting media

“…However, it was recently discovered that this species also grows in peat swamp forest, as found in Singkil Wildlife Reserve (Suaka Margasatwa Singkil), Aceh, Sumatera. According to this finding, the former investigation was then concentrated on how to understand life-history characteristics such as comparing shoot cuttings ability of D. aromatica in peat and coco peat media [3]. In addition, due to lack of in-depth investigation of adaptive genetic variation of this species grown in mineral soil and peat media, an experiment was carried out through RNA sequencing (RNA-Seq) transcriptome analysis.…”