Ketahanan Galur-Galur Harapan Padi Rawa terhadap Penyakit Tungro

Rudi Tomson Hutasoit (Badan Riset dan inovasi Nasional)
Muhammad Jihad
Rohimatun Rohimatun
Susilawati Susilawati
Mahardika Puspitasari

Seminar Nasional Lahan Suboptimal
Vol 13, No 1 (2025): Prosiding Seminar Nasional Lahan Suboptimal ke-13 "Optimalisasi Lahan Suboptima

Hutasoit, R. T., Jihad, M., Rohimatun, R., Susilawati, S., & Puspitasari, M. (2025). Resistance of Promising Lines of Wetland Rice to Tungro Disease. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-13 Tahun 2025, Palembang 20 Oktober 2025. (pp. x–y).  Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Tungro is one of the primary diseases affecting rice plants in wetland areas. This study aimed to determine the resistance of 52 lines of wetland rice to tungro disease. The examination was using the artificial infection method on rice seedlings in glass tubes. The study results showed that the responses of the tested lines to the tungro virus isolate from Mamasa, West Sulawesi, were varied. The four lines showed resistance to the tungro virus of isolate Mamasa, West Sulawesi, with a disease index (DI) value ≤ 3 and an incidence of tungro disease <50%: lines B14299E-KA-41-LR-1-1-1, B14299E-KA-41-LR-2-1-1, B14315E-KA-4-LR-2-1-1, and B14366E-KA-26-LR-1-1-1. The incubation period showed a positive correlation with the disease index, based on observations during the onset of symptoms. The four lines with the lowest disease index showed long period of incubation or symptom emergence. Based on the response to the virus isolate Mamasa, West Sulawesi, the four lines can be used as parent material in the assembly of resistant varieties in wetland areas.