PERCEPATAN KEMAMPUAN BERAKAR DAN PERKEMBANGAN AKAR STEK PUCUK Shorea platyclados MELALUI APLIKASI ZAT PENGATUR TUMBUH IBA

Abstract

Shorea platyclados is one of fast growing Dipterocarp species for enrichment planting in Logged Over Area (LOA) of tropical rain forests. One of the constrain to supply the seedling for support enrichment planting is the irregular flowering of S. platyclados. Moreover, the vegetative propagation is an alternative method to provide the sustainable seedling for enrichment planting in the LOA. This experiment was carried out to assess the effects of IBA concentrations on rooting ability, the primary and secondary root length, and the accumulated number of primary and secondary roots on shoot cutting of S. platyclados. The research was conducted in Completly Randomized Design (CRD) with 5 replications. The treatment was five concentrations of IBA, i.e. 0 ppm, 25 ppm, 50 ppm, 75 ppm, and 100 ppm. The data were analyzed using one-way analysis of variance (one way ANOVA) to determine the effect of IBA concentration variation among the treatments. The Duncan Multiple Range Test (DMRT) was used for multiple comparisons among the means of treatment at tα=5%, Results showed IBA concentrations significantly affected the rotting ability, the primary and secondary root length of shoot cutting (P < 0.05). On the other hand, the number of primary and secondary roots was not significantly different among treatment (P > 0.05). For rooting ability, 100 ppm of IBA concentration was the highest of all treatments. Meanwhile, 75 ppm of IBA concentration was the best treatment for development of root, i.e. the number of primary roots, the length primary and secondary roots.

The Success of Root Cuttings is Endangered Kalapi (Kalappia celebica Kosterm.) by Giving Rootone-F Growth Regulator

“…Keberhasilan stek sangat dipengaruhi oleh banyak faktor diantaranya ketersediaan auksin di tubuh tanaman (endogen) atau pemberian Zat Pengatur Tumbuh (ZPT) (eksogen) (Danu et al, 2010;Danu & Putri, 2014a,b;Kurniaty et al, 2016;Hardiwinoto et al, 2016;Rahayu & Riendriasari, 2016;Danu et al, 2017Danu et al, , 2018. Salah satu ZPT yang umum digunakan adalah Rootone-F. Pemanfaatan Rootone-F telah diaplikasikan pada berbagai jenis tanaman hutan seperti jabon (Putra et al, 2014), meranti bakau (Azwin & Sadjati 2018), manglid (Sudomo et al, 2013), pooti (Tuheteru et al, 2020) dan pucuk merah (Deselina et al, 2015).…”

The Success of Root Cuttings is Endangered Kalapi (Kalappia celebica Kosterm.) by Giving Rootone-F Growth Regulator

“…Keberhasilan stek sangat dipengaruhi oleh banyak faktor diantaranya ketersediaan auksin di tubuh tanaman (endogen) atau pemberian Zat Pengatur Tumbuh (ZPT) (eksogen) (Danu et al, 2010;Danu & Putri, 2014a,b;Kurniaty et al, 2016;Hardiwinoto et al, 2016;Rahayu & Riendriasari, 2016;Danu et al, 2017Danu et al, , 2018. Salah satu ZPT yang umum digunakan adalah Rootone-F. Pemanfaatan Rootone-F telah diaplikasikan pada berbagai jenis tanaman hutan seperti jabon (Putra et al, 2014), meranti bakau (Azwin & Sadjati 2018), manglid (Sudomo et al, 2013), pooti (Tuheteru et al, 2020) dan pucuk merah (Deselina et al, 2015).…”

Growth Evaluation of Red Meranti Species in Restoration Area of Gunung Dahu Research Forest, Bogor

“…On the contrary, S. pinanga grows better at its habitat in the ridge below 700 masl. It explains its lower growth than S. platyclados (Cao et al, 2009;Ng et al, 2013;Hardiwinoto et al, 2016).…”

“…Thus, both species are prospective to be planted and developed for various uses outside their natural habitat because of their high tolerance characteristics to different growing habitat. (Cao et al, 2009;Atmoko, Arifin, & Priyono, 2010;Ng et al, 2013;Hardiwinoto et al, 2016;Wardani & Susilo, 2017).…”

“…In their natural habitat, S. platyclados grows at an altitude ranging from 700-1,300 masl and sometimes grows at the bottom of the mountain valley, starting from 200 masl. In comparison, S. pinanga grows best at ridges below 700 m asl (Cao, Gailing, Siregar, Siregar, & Finkeldey, 2009;Ng, Lee, Lee, Tnah, & Ng, 2013;Hardiwinoto et al, 2016). The Shorea species' natural habitat has been facing serious problems, including forest fires, encroachment, and illegal loggings (Fiani, 2014).…”