RESPON VARIETAS CABAI TERHADAP PENULARAN VIRUS KUNING KERITING ASAL BABANDOTAN (AGERATUM CONYZOIDES) MELALUI SERANGGA VEKTOR BEMISIA TABACI (HEMIPTERA: ALEYRODIDAE)
Daftar Isi:
- Maya Indah Sari. Response of Chilli Varieties to the Transmission of Yellow Leaf Curl Virus from Ageratum (Ageratum conyzoides) by Bemisia tabaci (Hemiptera: Aleyrodidae) (Supervised by Suparman SHK) Yellow leaf curl disease of chili is a great obstacle faced by Indonesian farmers. The virus could cause yield losses up to approximately 20% to 100%. Yellow leaf curl virus has qute wide host range includes ageratum (Ageratum conyzoides). The infected ageratum can bee easily found surrounding cropping areas. The virus can be transmitted by grafting and through insect vektor Bemisia tabaci. The efficiency of transmission is influenced by the virulence of the virus itself, environmental conditions and the variety of the host. Chili varieties have different resistance to virus transmission. This research was aimed at knowing the efficiency of virus transmission of yellow leaf curl virus b from Ageratum conyzoides to chili by B. tabaci and find out the most susceptible variety to the virus transmission. Method used in this research is an experimental method arrange in a completely randomized design with 3 treatments and 10 replications and each treatment unit consisted from 3 plants, resulted in 90 plants grown in 10 kg polybags. The experiment was located in the backyard of Department of Plant Pest ad Disease Faculty of Agriculture, Sriwijaya University from August to December 2019. The results showed that yellow leaf curl virus could be transmitted from ageratum (Ageratum conyzoides) to chili varieties of C.frutescens, C. annuum, and C.annuum by B. tabaci. The first symptom appeared at the same time, 30days after inoculation, in all the three varieties tested but with different disease intensity. The symptoms also varied. The disease incidence in C .frutescens was 84.03 % with 46.86% disease intensity, 75.94% in C.annum and C. annuum hybrid with disease intensity 27.23% and 27.74% respectively. The infection of yellow leaf curl also influenced the crop yield. Keyword : Chili varieties, Pepper yellow leaf curl virus, Babandotan (Ageratum Conyzoides), Bemisia tabaci