scholarly journals Identification of a new locus conferring antixenosis to the brown planthopper in rice cultivar Swarnalata (Oryza sativa L.)

2013 ◽  
Vol 12 (3) ◽  
pp. 3201-3211 ◽  
Author(s):  
Y.F. Qiu ◽  
L. Cheng ◽  
F. Liu ◽  
R.B. Li
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Brown Planthopper ◽  
Rice Cultivar

Screening of IR50 × Rathu Heenati F7 RILs and Identification of SSR Markers Linked to Brown Planthopper (Nilaparvata lugens Stål) Resistance in Rice (Oryza sativa L.)

2010 ◽  
Vol 46 (1) ◽  
pp. 63-71 ◽  
Author(s):  
Sanju Kumari ◽  
Jennifer M. Sheba ◽  
Maheshwaran Marappan ◽  
Shanmugasunderam Ponnuswamy ◽  
Suresh Seetharaman ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Ssr Markers ◽  
Oryza Sativa L ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Nilaparvata Lugens Stål ◽  
Rathu Heenati

scholarly journals Pengaruh sistem tanam dan tinggi genangan air terhadap produktivitas tanaman padi kultivar mekongga di kabupaten Karawang

Kultivasi ◽  
2018 ◽  
Vol 17 (2) ◽  
Author(s):  
Rommy Andhika Laksono ◽  
Yudi Irawan
Keyword(s):  
Oryza Sativa ◽  
Research Method ◽  
Oryza Sativa L ◽  
Block Design ◽  
Rice Cultivar ◽  
Staple Food ◽  
Randomized Block Design ◽  
Experiment Method ◽  
Food Needs ◽  
Planting System

ABSTRAKProgram peningkatan ketahanan pangan diarahkan untuk dapat memenuhi kebutuhan pangan masyarakat di dalam negeri dari produksi pangan nasional. Salah satu bahan pangan nasional yang diupayakan ketersediaannya tercukupi sepanjang tahun adalah beras yang menjadi makanan pokok bagi sebagian besar penduduk Indonesia. Penelitian ini bertujuan untuk mendapatkan sistem tanam dan tinggi genangan air yang mampu memberikan produktivitas tertinggi pada tanaman padi varietas Mekongga di Kabupaten Karawang. Penelitian dilaksanakan di sawah teknis Desa Tanjung Bungin, Kecamatan Pakisjaya, Kabupaten Karawang, Provinsi Jawa Barat. Ketinggian tempat percobaan adalah 5 meter di atas permukaan laut. Penelitian dilaksanakan dari bulan September 2016 sampai dengan bulan Desember 2016. Metode penelitian yang digunakan adalah metode eksperimen dan rancangan percobaan yang digunakan adalah Rancangan Acak Kelompok faktor tunggal, dengan sembilan perlakuan yang diulang sebanyak tiga kali. Terdapat sembilan kombinasi perlakuan sistem tanam dan tinggi genangan air. Hasil penelitian menunjukkan sistem tanam dan tinggi genangan air tanaman padi (Oryza sativa L.) varietas Mekongga berpengaruh nyata terhadap tinggi tanaman 42, 56, dan 70 hst.  Jumlah anakan umur 42, 56, dan 70 hst,  jumlah malai per rumpun, jumlah gabah per malai, persentase gabah isi, dan hasil gabah kering giling. Sistem tanam Legowo 4:1 dan genangan air 5 cm memberikan hasil gabah kering giling tertinggi sebanyak 15,2 kg/petak atau setara dengan 7,20 ton/ha.Kata Kunci : Sistem Tanam, Tinggi Genangan Air, Varietas Mekongga ABSTRACTThe program that increase food security is government target to supply national food needs. Rice is the staple food for most of Indonesia's population whose productivity must be increased. This study aims to obtain planting system and flooding that is able to provide the highest productivity in Mekongga rice cultivar in Karawang district. The research was conducted in the rice fields of Tanjung Bungin Village, Pakisjaya, Karawang Regency, West Java Province. It is 5 meters above sea level. This study was conducted from September 2016 until December 2016. The research method used was experiment method and experimental design used was Randomized Block Design, with nine treatments and repeated three times. There were combination of planting system and flooding for treatments. The results showed that planting system and flooding significantly affect crop height at 42, 56, and 70 day after planting (dap). Number of tillers at 42, 56, and 70 dap, number of panicles, number of grain per panicle, percentage of filled grain, and dried milled grain weight. Legowo 4: 1 planting system and 5 cm flooding gave highest yield of dried grain of 15.2 kg / plot or equal to 7.20 ton / ha.Keywords: Flooding, Mekongga Cultivar, Planting System

scholarly journals Enhancement of Regeneration Efficiency through Callus Induction Media Using 2,4-Dicholorophenoxyacetic acid in Indica Rice (Oryza sativa L. var. Ciherang)

2017 ◽  
Vol 18 (2) ◽  
pp. 91
Author(s):  
Kunti Anis Azizah ◽  
Didik Pudji Restanto ◽  
Bambang Sugiharto
Keyword(s):  
Oryza Sativa ◽  
Callus Induction ◽  
Embryogenic Callus ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Rice Variety ◽  
Rice Cultivar ◽  
Medium Composition ◽  
Regeneration Frequency ◽  
Optimum Result

Indica rice variety Ciherang is the most planted variety in Indonesia, but the micropropagation technique is restricted because it is known has low regeneration frequency and included as recalcitrant cultivar for tissue culture and tranformation activities. One of solution to resolve that problem is developing a technique of somatic embryogenesis in callus of ciherang rice cultivar. The aims of study were to determine medium composition for inducting embryogenic callus in Ciherang rice and to know the effectivity of rice regeneration using callus as explant. The methods were included induction of embryogenic callus in callus induction media (CIM) containing MS basal, Proline 600 mg/l, Casein Hidrolisat 300 mg/l, phytagel 2,5 g/l, BAP 0.25 mg/l, sukrosa 30 %, and 2,4-D in different concentration, from 2,4-D 0 mg/l as control (CIM 1), 2,4-D 2 mg/l (CIM 2), 2,4-D 3 mg/l (CIM 3), and 2,4-D 4 mg/l (CIM 4). It then be continued to regenerate the calli in RM 1 medium containing MS basal, NAA 0,2 mg/l, Kinetin 2 mg/l, Agarose 10 g/l, and sukrosa 30 %, pH 5,8 for six days in dark and RM2 medium containing MS basal , NAA 0,2 mg/l, Kinetin 2 mg/l, Agarose 8 g/l, sukrosa 30 %, pH 5,8 in light room. Results showed CIM 4 medium using 2,4-D 4 mg/l gave optimum result in calli induction with procentage 57,63% and CIM 3 using 2,4-D 3 mg/l gave optimum result in embryonic calli induction with procentage 53,63%. Result of embryonic calli gave regeneration frequency procentage is 9,6%. The total planlet obtained after five weeks old in regeneration medum were 11 planlets ready for aclimatization. Keywords: Somatic embryo, Indica rice (Oryza sativa L. var. Ciherang), Callus

scholarly journals The Development and Characterization of Near-Isogenic and Pyramided Lines Carrying Resistance Genes to Brown Planthopper with the Genetic Background of Japonica Rice (Oryza sativa L.)

Plants ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 498
Author(s):  
Cuong D. Nguyen ◽  
Holden Verdeprado ◽  
Demeter Zita ◽  
Sachiyo Sanada-Morimura ◽  
Masaya Matsumura ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Resistance Genes ◽  
Genetic Background ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Japonica Rice ◽  
Rice Varieties ◽  
Nilaparvata Lugens Stål

The brown planthopper (BPH: Nilaparvata lugens Stål.) is a major pest of rice, Oryza sativa, in Asia. Host plant resistance has tremendous potential to reduce the damage caused to rice by the planthopper. However, the effectiveness of resistance genes varies spatially and temporally according to BPH virulence. Understanding patterns in BPH virulence against resistance genes is necessary to efficiently and sustainably deploy resistant rice varieties. To survey BPH virulence patterns, seven near-isogenic lines (NILs), each with a single BPH resistance gene (BPH2-NIL, BPH3-NIL, BPH17-NIL, BPH20-NIL, BPH21-NIL, BPH32-NIL and BPH17-ptb-NIL) and fifteen pyramided lines (PYLs) carrying multiple resistance genes were developed with the genetic background of the japonica rice variety, Taichung 65 (T65), and assessed for resistance levels against two BPH populations (Hadano-66 and Koshi-2013 collected in Japan in 1966 and 2013, respectively). Many of the NILs and PYLs were resistant against the Hadano-66 population but were less effective against the Koshi-2013 population. Among PYLs, BPH20+BPH32-PYL and BPH2+BPH3+BPH17-PYL granted relatively high BPH resistance against Koshi-2013. The NILs and PYLs developed in this research will be useful to monitor BPH virulence prior to deploying resistant rice varieties and improve rice’s resistance to BPH in the context of regionally increasing levels of virulence.

Identification of QTLs Conferring Small Brown Planthopper Resistance in Rice (Oryza sativa L.) Using MR1523/Suyunuo F2:3 Population

2017 ◽  
Vol 43 (11) ◽  
pp. 1596
Author(s):  
Jie ZHONG ◽  
Pei-Zheng WEN ◽  
Zhi-Guang SUN ◽  
Shi-Zhuo XIAO ◽  
Jin-Long HU ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Brown Planthopper ◽  
Small Brown Planthopper ◽  
Brown Planthopper Resistance

Mapping Genetic Locus Linked to Brown Planthopper Resistance in Rice Oryza sativa L.

2009 ◽  
Vol 4 (1) ◽  
pp. 13-22 ◽  
Author(s):  
S. Santhanala ◽  
S. Saikumar ◽  
Shubhada Rao ◽  
A. SaiHarini ◽  
Pawan Khera ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Genetic Locus ◽  
Brown Planthopper ◽  
Brown Planthopper Resistance
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