Penggunaan Indole Butirat Acid untuk Setek Pucuk Kantong Semar (Nepenthes ampullaria Jack.) Hijau Polos

Application of Indole Butirat Acid to Cuttings of Plain Green Pitcher Plant (Nepenthes ampullaria Jack.)

Abstract

The pitcher plant (Nepenthes ampullaria Jack.) is an endemic species distributed in Sumatra and Kalimantan. This species has a least concern status due to the lack of recent research data on its abundance and distribution. Exploitation for trade and deforestation have led to population decline. In addition, the long time to reach the generative phase and dioecious flowering type also contribute to the reduction of Nepenthes sp. Conservation programs in situ and ex-situ are very essential to preserve N. ampullaria. Plant propagation through cuttings can support conservation activities. The success of cuttings is determined by the concentration of growth regulators (ZPT) to induce the formation of roots and shoots, so it is important to study the concentration of ZPT. This study aims to determine the best IBA concentration to induce roots and shoots in N. ampullaria. The study was arranged based on a completely randomized design with IBA concentration treatment consisting of 5 levels, namely: 0, 5, 10, 15, and 20 mg L^-1. The results showed that IBA concentration did not significantly affect the growth of N. ampullaria shoot cuttings with the percentage of live cuttings ranging from 70-100%, shoot height increase ranging from 5.01-9.53 cm, the number of primary roots ranging from 5.89-9.56 strands and the number of primary roots ranging from 3.52-6.29 cm. All treatments can stimulate the formation of roots and shoots, indicating that the endogenous phytohormone content was sufficient for the growth of shoot cuttings in N. ampullaria.

Keywords: biodiversity, conservation, endemic, extinct, plant growth regulator