KARAKTERVEGETATIF DAN PRODUKSI AWAL TANAMAN JARAK PAGAR (JATROPHA CURCAS L.) AKIBAT PERLAKUAN MUTAGEN COLCHICINE

Abstract

Mutation and polyploidization represent some of plant breeding method exploited to increase
genetic diversity of physic nut. The result of mutation polyploidization process obtainable superior
physic nut polyploid. This research was aimed to study the appearance of physic nut effected by
concentration and frequency of colchicine treatment. The type of physic nut used in this research is
IP-1A. The combination of concentration colchicine (0,1%; 0,2%; 0,3%; 0,4%; 0,5%; 0,6%) and
frequency of colchicine solution (6 times, 8 times, 10 times) treated to get a mutant of physic nut.
Plant without colchicine as a control. The result of this research indicated that the colchicine cause
variation at vegetatif character. There is 3-5 crops having vegetatif size higher than control crop.
Treatment of colchicine 0,5% 6x; 0,3% 10x and 0,2% 8x yields higher maximum fruit that is 95-
168 fruits compared to control crop yielding 89 fruits.

Key words : Physic nut, polyploid, mutation, colchicines