The Effect of Interstock on The Development of Huanglongbing Disease and Vegetative Growth of Three Commercial Citrus Varieties in Indonesia

Abstract Huanglongbing (HLB) disease, causes a 60-95% decline in Indonesia citrus production almost all centers. The use of suitable interstocks can increase fruit and quality, improve compatibility, also tolerance to HLB with tolerant interstocks. Potential interstock, providing an alternative for farmers be able save their plants from the destruction HLB. purpose this study was determine effect several inhibiting development disease growth plants. Eight interstock combination treatments ( JC, JC+Rough lemon, JC+Carrizo citrange, JC+citrumelo, JC+Poncirus trifoliata, JC+Volkamer JC+Troyer citrange JC+ Kanci kumquat ) on 3 commercial varieties C. reticulata var. Batu 55, nobilis Pontianak aurantifolia Nimas Agrihorti). affects plant In three upper limit tested, mildest symptoms healthiest found P.trifoliata , Candidatus Liberibacter asiaticus were detected after inoculation using conventional PCR amplification second test. Based index severity symptoms, JC+P. trifoliata classified as mild against C Las infection scion tested Vegetative varied, them could grow well except shoot which stagnant at 5-6 months inoculation.