Keragaan Penyakit Padi Pada Varietas Unggul Baru Untuk Agroekosistem Rawa Dan Lahan Kering

Abstract

<p><em>Swampand dryland agroecosystems has the potential tobe used as acomplementary effort to improve national food security. This effort washamperedby the disruption of plant disease in new improved varieties of riceasone of the technology to increase rice production. This study aims to determine the performance of rice diseases at new improved varieties for swamp and dryland agro eco systems. Research conducted in 2013 growing season in ICR Rusinga randomized block design with 3 replications. The treatments were13new improved varietiesi.e. Inpara 1, Inpara 2, Inpara 3, Inpara 4, Inpara 5, Inpara 6, Inpara 7, Inpago 4, Inpago 4, Inpago 5, Inpago 6, Inpago 7, Inpago 8, and Inpago 9. For disease survei llance drawn diagonalline in each experimental plot, each diagonalline taken10 samples of plant clumps. Each sample clumps was observed the disease severity that were found by scoring method (IRRI, 2002).The results showed there were six diseases that infect new improved varieties for swampand upland agro ecosystems name lystem rot, sheath blight, red stripe, cercosporaleaf spot, bacterial leaf blight,and bacterialleafstreak. Stem rot with the highest severity found in Inpara3(35.18%) and Inpago4(32.96%). Sheath blight with the highest severity found in Inpara1(6.11%) and Inpago7(5.74%). Red stripe withthe highests everity found in Inpara6 (47.78%) and Inpago9 (40.74%). Cercosporaleaf spotwiththe highestseverity found in Inpara5(40.37%) and Inpago6 (14.82%). Bacterial leaf blight with the highest severity found in Inpara3(24.26%) andInpago9 (32.04%). Bacterial leaf streak with the highest severity found in Inpara3(9.26%) and Inpago6 (30.56%).</em></p><p> </p>

Selection of Soybean Cultivars: Preparation the Plant Breeding With Microspore Culture Method

“…Kata kunci: seleksi, kedelai, mikrospora PENDAHULUAN Peningkatan produksi kedelai dapat dilakukan dengan menambah luas lahan penanaman, menambah produktivitas dan meningkatkan potensi hasil genetik tanaman melalui persilangan galur untuk memperoleh calon varietas unggul baru (Adisarwanto, 2010). Penggunaan varietas unggul merupakan teknologi yang lebih nyata kontribusinya terhadap peningkatan produktivitas tanaman (Yuliani, et al, 2017). Upaya mendapatkan kultivar unggul yang baru merupakan bagian dari pekerjaan pemuliaan tanaman.…”

Effect of Corynebacterium Against Xantomonas Campetric Causes of Bacterial Leaf Blight in the Paddy Plant (Oryza sativa L.) Varieties Inpari 13

“…The results of dried grain varieties of Situbagendit range from 8.10 tons ha-1, Ciherang 8.08 ton ha-1, Inpari 13 8.07 ton ha-1, Inpari 7 7.52 ton ha-1, Inpari 10 6.7 ton ha-1 [4], Dianawati and Sujitno added that Inpari 13 had a relatively high production of Inpari 4 [5]. Some research results showing the resilience of some rice varieties that are susceptible to bacterial leaf blight disease, namely Inpari 30, Situbagendit, Cibogo, Luk-Ulo [6], Inpari 3 and Inpago 9 [7]. The bacterial leaf blight resistant varieties Inpari 1, Inpari 10, Limboto, Lekat Tombot lineut, Rommokot, Paki Gajah, Tomboen, BO 100, Sipasie, BO Minyak, Bontok, Sirendeh Semantuk Wayla, Sambei [8], IRBB 27, IR-64, Inpari 16, Ciherang, Inpari 30, Inpari 31 [9].…”