Uji Adaptasi Klon-Klon Kentang Transgenik Tahan Hawar Daun Pada Agroekosistem Jawa Barat Dan Jawa Tengah [Adaptation Test of Transgenic Potato Resistance to Late Blight Under Agro Ecosystem of West and Central Java]

Nfn Kusmana • Alberta Dinar Ambarwati
Journal article Jurnal Hortikultura • December 2018 Indonesia

Abstract

Adaptation test is one of the main requirements for variety registration. One of major problem of potato production is potato late blight disease caused by P. infestans. Through the breeding program has produced several candidates potato varieties resistance to late blight. Late blight resistant potato was obtained through crosses between Indonesian local potato variety of Granola and Atlantic with transgenic variety of Katahdin SP951. Adaptation test was conducted at confined field trials in potato production area in West Java (District of Bandung and Garut) and Central Java (Banjarnegara). The experiment was conducted from October 2013 to February 2014. The experimental design was Randomized Complete Block Design with three replications. The software of MSTATC was used for testing the stability of genotypes. To test of resistance to P.infestans, it was used P. infestans isolates that collected from each test site. Inoculation was conducted in a greenhouse at the plant was 30 days old after planting and performed five times inoculation with intervals of 4 days on the age (30, 34, 38, 42, and 46 days). The result showed that the stable genotypes were obtained from clone 20, 27, 62, and 65, as well as the varieties Atlantic, Granola, Katahdin, and Katahdin SP951. Whereas, clone 66 and 69, were unstable clone. Genotypes resistance to late blight were clone 27, 62, 65, 66, 69 and Katahdin SP951. Clone 20 has a moderate resistant to late blight, while Granola and Atlantic are genotypes that are susceptable to late blight. The results of the study can be used as a recommendation for the nomination of candidates potato varieties that have good adaptation in West Java and Central Java as well as resistant to late blight.

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Jurnal Hortikultura

Jurnal Hortikultura (J.Hort) memuat artikel primer yang bersumber dari hasil penelitian hortikul... see more