Flowering and fruiting phenology of Kemenyan toba (Styrax sumatrana J.J.Sm.) in AekNauli forest, North Sumatra

International Conference on Agriculture, Environment, and Food Security

农业科学;生态环境科学

Kholibrina, C.R.^1 ; Aswandi^1 ; Susilowati, A.^2

Forestry and Environment Research Development, Institute of Aek Nauli, Jl Raya Parapat Km 10.5, Sibaganding Parapat, Simalungun North Sumatra

21174, Indonesia^1

Faculty of Forestry, Universitas Sumatera Utara, Kampus USU, Jl. Tridarma Ujung No. 1, Medan North Sumatra, Indonesia^2

关键词: Breeding activities;    Catchment area;    Cycle periods;    Non-timber forest products;    Sumatra;    Tree improvement;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/122/1/012061/pdf
DOI  :  10.1088/1755-1315/122/1/012061

来源: IOP

【 摘 要 】

The observation on flowering, fruiting phenology and germination of Kemenyan toba (Styrax sumatrana) has not been widely reported. It isrequired to support the breeding activities for this tree improvement, the most Non-Timber Forest Product commodity in Lake Toba Catchment Area, North Sumatra. The objectives of the research were to identify the development of flowering, fruiting andto calculate the number of fruits that germinate for S. sumatrana in certain cycle period. The flowering and fruiting observation were conducted on ten sample trees in Aek Nauli forest from July 2012 to February 2013. The seeds viability was observed from January to November 2014 in the greenhouse. The study showed that the flowering development occurred for 30 to 152 days, began from the growing of generative buds, the flower's shoots and bursts were developed, and young fruits were matured. All of processes proceeded for 30 to 152 days. The average percentage of flowering is 53.5%, and 72.8% for flowering to fruiting, and 47.3% for young to mature fruit. The percentage of mature fruit to germinate was 89.3%.