Production and Physiology Characteristics of Some Rubber Clones in Early Tapping with Growth Regulator

Abstract

The study was aimed to study latex production and physiology character of some rubber clones in early tapping with the use of Plant Growth Regulators (PGR) and the relationship between production and latex yield characters. The research was conducted in KarangInong Farm, PTP-N I Kso PTP-N III, East Aceh. The research was prepared using two factors Nested Design, namely 5 clone factors and 7 hormone factors. The treatment was repeated twice, but nested in the clone factor, so the number of experimental units was 7 x 5 x 2 = 70. Each experimental unit consists of 4 plants with the total is 280 plants. The results showed that response of each clone and hormone was different for production parameters and latex yield character. Treatment of clone PB 340 and hormone H6 (600 ppm IAA + Kinetin 60 ppm) yield the highest production (g/p/s). The best Interaction of clone and hormone treatment is K4H4 (IRR 107 clone with IAA 500 ppm + Kinetin 60 ppm) as indicated by production parameters (38.04 g/p/s), sucrose content (9.14 mM, phosphoric acid (6.84 mM), Thiol (0.50 mM) and plugging index (16.34%)