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All Journal Buletin Plasma Nutfah Jurnal Agro Jurnal Perlindungan Tanaman Indonesia
Sudir Sudir
Balai Besar Penelitian Tanaman Padi
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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Ketahanan Galur Isogenik IRBBN dan Galur Harapan Padi terhadap Patotipe Xanthomonas oryzae pv. oryzae Dominan pada Tanaman Padi di Indonesia Dini Yuliani; Untung Susanto; Sudir Sudir
Buletin Plasma Nutfah Vol 23, No 1 (2017): June
Publisher : Balai Besar Penelitian dan Pengembangan Bioteknologi dan Sumberdaya Genetik Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/blpn.v23n1.2017.p23-32

Abstract

Galur isogenik IRBB introduksi dari International Rice Research Institute (IRRI) telah diketahui gen ketahanannya dan dapat digunakan sebagai sumber ketahanan terhadap patotipe Xanthomonas oryzae pv. oryzae (Xoo) dominan di Indonesia. Kegiatan penelitian ini bertujuan untuk mengevaluasi ketahanan galur isogenik dan galur harapan terhadap patotipe Xoo dominan di Indonesia, yaitu patotipe III, IV, dan VIII. Penelitian dilaksanakan di Kebun Percobaan Sukamandi, Subang, Jawa Barat pada musim kemarau (MK) 2012 dan musim hujan (MH) 2012/2013. Penelitian dilakukan dengan Rancangan Faktorial Acak Kelompok dengan tiga ulangan. Faktor pertama adalah tiga patotipe Xoo, yaitu patotipe III, IV, dan VIII, sedangkan faktor kedua yaitu materi yang diuji sebanyak 20 galur IRBB, 6 galur harapan padi, dan 6 varietas pembanding, yaitu Conde, Lusi, Logawa, Java 14, Angke, dan Inpari 1. Hasil penelitian menunjukkan bahwa galur isogenik IRBB 21, IRBB 50, dan IRBB 52 bereaksi tahan terhadap Xoo patotipe III, IV, dan VIII pada MK 2012. Pada MH 2012/2013 diperoleh lima galur isogenik IRBB 52, IRBB 53, IRBB 54, IRBB 56, dan IRBB 57 bereaksi tahan terhadap Xoo patotipe III, IV, dan VIII. Galur isogenik IRBB 52 konsisten tahan terhadap Xoo patotipe III, IV, dan VIII pada dua musim tanam. Oleh karena itu, galur tersebut dapat direkomendasikan untuk dijadikan tetua tahan untuk perakitan varietas tahan HDB.
Keragaan Hama, Penyakit, dan Musuh Alami pada Budidaya Padi Organik Dini Yuliani; Sudir Sudir
Jurnal Agro Vol 4, No 1 (2017)
Publisher : Jurusan Agroteknologi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/1335

Abstract

Organic rice cultivation intents to minimize the use of inorganic fertilizers and chemical pesticides, but in fact not apart from the disruption of pests and diseases. The study aimed to determine the pests, diseases, and natural enemies on organic rice cultivation. The research was conducted at Screen Field of ICRR at WS 2015/2016 and DS 2016, using Split Plot research design with three replications. The main plot was varieties of: 1). Inpari 25, 2). Inpari 33, and 3). Sintanur. The sub-plot was application of leaf extract of: 1). Mindi, 2). Soursop, 3). Mahogany, and 4). Control. Applications were performed on 4, 6, 8, and 10 weeks after planting (WAP). Observations of pests, diseases, and natural enemies on 5, 7, 9, and 11 WAP as many as 20 clumps/plots. The results showed that varieties and leaf extract applications significantly affected on severity of stem rot disease at 5 and 7 WAP in WS 2015/2016. In the rainy season found Yellowing on Inpari 25 and Inpari 33 varieties. However, Sintanur was more resistant to Yellowing with LCC value on two growing seasons was highest compared to the other varieties. Sintanur had the lowest Cercospora Leaf Spot disease severity compared to the other varieties. The severity of disease generally increased with the age of rice increase, while the pest population density and natural enemies were fluctuate. The density of the pest was quite high in the control plot, while the natural enemy density was high enough in the application plots of Mindi, Mahogany, and Soursop extracts.
Sclerotia of Rhizoctonia solani, their Production on Infected Rice Plants and their Population in Different Soil Types H. Utami; Sudir Sudir
Jurnal Perlindungan Tanaman Indonesia Vol 3, No 2 (1997)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jpti.12965

Abstract

Production of sclerotia of Rhizoctonla solani on infected rice plants and their population in different soil types were evaluated during the year of 1992/1993 and 1993/1994. The production of sclerotia was estimated on 20 diseased rice plants and plant debris (rice straw) placed on soil surface, in 10 cm depth, and in 20 cm depth. The population of sclerotia in the soil was estimated by separating the sclerotia from soil samples collected from different soil previously planted with different crops. Data indicated that during the rainy season of 1992/1993, the mean sclerotia produced were 14.85 and 10.95 per hill on the variety of IR64 and non-lR64, respectively. While during the dry season of 1993 the mean sclerotia produced on these varieties were 7.50 and 7 .25 per hill. On both varieties, the production of sclerotia was positively correlated with disease  severity of sheath blight, as indicated by the correlation coefficient of 0.90 and 0.70, for the variety of IR64 and non-IR64, reepectively. Their close relationship was estimated by the model of Y=-29.00+1.16x (R^2=0.82) and Y=-2.94+0.35x (R^2=0.45), for the variety of IR64 and non-IR.64, respectively. The production of sclerotia on the infected rice straw was significantly affected by the soil depth where the diseased straw were kept. On the straw of IR64, the sclerotia produced were 7.00, 5.25, and 1.25, when the straw were kept in the depth of 0, 10, and 20 cm, respectively. While on the straw of non-IR.64 variety, the sclerotia produced were 7.75, 5.25, and 0.50. when the straw were kept in the depth of 0, 10, and 20 cm, respectively. Highest number of sclerotia was observed in Ultisol soil previously planted with corn, while the smallest was in Ultisol previously planted with mungbean.
Co-Authors Dini Yuliani H. Utami Untung Susanto