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.

scholarly journals Respons Beberapa Varietas Padi (Oryza sativa L.) terhadap Wereng Batang Coklat (Nilaparvata lugens Stall) Koloni Karawang

Agrikultura ◽  
2018 ◽  
Vol 29 (2) ◽  
pp. 73
Author(s):  
Dedi Darmadi ◽  
Tuti Alawiyah
Keyword(s):  
Oryza Sativa ◽  
Rice Yield ◽  
Oryza Sativa L ◽  
Rice Variety ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Test Method ◽  
Rice Varieties ◽  
Directorate General ◽  
Population Origin

ABSTRACTResponse of rice varieties (Oryza sativa L.) to brown planthopper (Nilaparvata lugens Stall) of Karawang coloniesThe research was conducted to determine the resistant level of several rice varieties (Oryza sativa L.) against brown planthopper (Nilaparvata lugens Stall) Karawang colony. The experiment was done at the Entomology Laboratory of Pest Forcesting Institute, Jatisari, Directorate General of Food Crops, Ministry of Agriculture. It was conducted from February to June 2017. The resistant of rice varieties against brown planthopper was tested using honey dew test method with bromocressol green as indicator. Honey dew test method is one of methods to evaluate rice variety reaction against brown planthopper population origin of certain area. This is due to the production of honey dew by brown planthopper which positively correlated with the amount of liquid being drawn from the plant. This study used Duncan Test on 5% level. The result demonstrated the variation of rice resistant against brown planthopper based on the area of honey dew spot, brown planthover mortality, attacks intensity, the destruction level on plant, and the rice yield. Inpari 13 was the most toleranct rice variety against the infestation of brown planthopper of Karawang colony.Keywords: Brown planthopper, Honey dew, Paddy, Resistance, VarietiesABSTRAKPenelitian ini bertujuan untuk menilai tingkat ketahanan varietas padi (Oryza sativa L.) terhadap wereng batang coklat (Nilaparvata lugens Stall) koloni Karawang. Penilitian dilaksanakan di Laboratorium Entomologi Balai Besar Peramalan Organisme Pengganggu Tumbuhan (BBPOPT) Jatisari, Direktorat Jenderal Tanaman Pangan, Kementerian Pertanian. Penelitian berlangsung dari Bulan Februari sampai Bulan Juni 2017. Pengujian ketahanan varietas padi terhadap wereng batang coklat dilakukan dengan menggunakan metode uji embun madu (honeydew test) dengan memakai indicator bromocressol green. Metode uji embun madu merupakan salah satu metode untuk mengevaluasi reaksi suatu varietas terhadap populasi wereng batang coklat yang berkembang di suatu wilayah tertentu, karena jumlah embun madu yang dikeluarkan oleh wereng batang coklat mempunyai hubungan yang positif dengan jumlah cairan tanaman yang dihisap. Uji lanjut yang digunakan adalah uji lanjut Duncan pada taraf 5%. Hasil penelitian menunjukkan terdapat variasi ketahanan antar varietas padi yang diuji dilihat dari luas bercak embun madu yang dihasilkan pada masing-masing varietas padi, mortalitas wereng batang coklat, intensitas serangan, tingkat kerusakan tanaman, dan bobot hasil panen padi. BErdasarkan parameter tersebut di atas, Inpari 33 merupakan varietas padi yang tahan terhadap serangan wereng batang coklat koloni Karawang.Kata kunci : Embun madu, Ketahanan, Padi, Varietas, Wereng batang coklat

Feeding responses of the brown planthopper, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae), to resistant and susceptible host-plants

1989 ◽  
Vol 79 (2) ◽  
pp. 309-318 ◽  
Author(s):  
D. E. Padgham ◽  
S. Woodhead ◽  
H. R. Rapusas
Keyword(s):  
Resistance Genes ◽  
Host Plants ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Resistance Mechanisms ◽  
Population Development ◽  
Rice Varieties ◽  
Susceptible Host ◽  
Insect Activity ◽  
Nilaparvata Lugens Stål

AbstractThe feeding responses, growth and population development of Nilaparvata lugens (Stål) are quantified on a range of twelve susceptible or resistant host-plants. Paris of rice varieties carrying the Bph1, bph2 and Bph3 resistance genes are compared as hosts for N. lugens, and it is concluded that such notations do not adequately describe the diversity of plant resistance mechanisms. Evidence is presented for resistance mechanisms involving enhanced insect activity and gustatory responses to unacceptable phloem.

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 Uji Ekstrak Daun Tithonia diversifolia sebagai Penghambat Daya Makan Nilaparvata lugens Stal. pada Oryza sativa L. (Evaluation of Tithonia diversifolia Leaf Extract as Feeding Capacity Inhibitor of Nilaparvata lugens in Oryza sativa L.)

2013 ◽  
Vol 3 (2) ◽  
Author(s):  
Tri A. Mokodompit ◽  
Roni Koneri ◽  
Parluhutan Siahaan ◽  
Agustina M Tangapo
Keyword(s):  
Oryza Sativa ◽  
Leaf Extract ◽  
Oryza Sativa L ◽  
Feeding Activity ◽  
Insect Pest ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Tithonia Diversifolia ◽  
Feeding Inhibition ◽  
Nilaparvata Lugens Stål

AbstrakWereng Batang Coklat (WBC) (Nilaparvata lugens Stal.) merupakan serangga hama yang dapat merusak tanaman padi (Oryza sativa L.). Tanaman kipait (Tithonia diversifolia) berpotensi sebagai insektisida nabati karena memiliki senyawa toksik terhadap serangga. Penelitian ini bertujuan untuk mengkaji aktifitas makan akibat pemberian ekstrak daun kipait. Konsentrasi ekstrak daun kipait yang digunakan adalah 0% (kontrol), 1%, 3%,5% dan 7% dalam RAL (Rancangan Acak Lengkap) dengan 5 kali ulangan. Hasil penelitian menunjukkan bahwa pemberian ekstrak daun kipait berpengaruh terhadap penghambatan daya makan WBC. Penghambatan makan tertinggi terjadi pada konsentrasi 7% setelah 24 jam.Kata kunci : penghambatan daya makan, Nilaparvata lugens Stal., Tithonia diversifoliaAbstractBrown planthopper (BPH) (Nilaparvata lugens Stal.) Is an insect pest that can damage rice plants (Oryza sativa L.). Kipait (Tithonia diversifolia) is potential as a bioinsecticide because it is toxic to insects. This study aimed to evaluate the feeding activity that was influenced by kipait leaf extract. The concentration of kipait leaf extract were 0% (control), 1%, 3%, 5% and 7%. The experiment design was CRD (completely randomized design) with 5 replications. The results showed that the kipait leaf extract influenced the feeding inhibition of BHP. The highest inhibition occurred in the concentration of 7% after 24 hours treatment.Keywords : brown planthopper, feeding inhibition, Tithonia diversifolia

Variety-related feeding patterns in the brown planthopper, Nilaparvata lugens (stål) (Hemiptera: Delphacidae), on its host, the rice plant

1988 ◽  
Vol 78 (2) ◽  
pp. 339-349 ◽  
Author(s):  
D. E. Padgham ◽  
S. Woodhead
Keyword(s):  
Rice Variety ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Time Of Day ◽  
Rice Varieties ◽  
Sources Of Variation ◽  
Insect Populations ◽  
Honeydew Excretion ◽  
Nilaparvata Lugens Stål ◽  
Moderately Resistant

AbstractMajor potential sources of variation in the feeding of Nilaparvata lugens (Stål) which are not host-dependant are those related to time, i.e. the age of the insect, the length of time the insect is in association with the plant and the time of day. These parameters were investigated with a susceptible, a moderately resistant and a resistant rice variety using honeydew clocks for the collection of honeydew excretion data. It is concluded that there are non-circadian patterns of honeydew excretion which are related to the degree of resistance of the variety and that such feeding and excretion patterns can be used to characterize the relationship between insect populations and rice varieties.

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