scholarly journals KELIMPAHAN POPULASI PARASITOID Trichogramma sp DAN SERANGAN HAMA PENGGEREK BATANG PADI SAWAH DI KABUPATEN MINAHASA

EUGENIA ◽  
2011 ◽  
Vol 17 (1) ◽  
pp. 28
Author(s):  
R. T. D. Maramis ◽  
E. Senewe ◽  
V. V. Memah
Keyword(s):  
Stem Borer ◽  
Sampling Location ◽  
Adult Size ◽  
Female Antenna ◽  
Rice Stem Borer ◽  
Percentage Data

This research was aimed to identify morphological charactersofparasitoid Trichogramma sp. at eachsampling location, to assess parasitoidsabundance, and to get attacking percentage data of rice stemborer. The sampling location is in Minahasa Region namely Tondano, Tompaso, Langoan and Kakas.The result revealed that adult size of the parasitoid was from 0.4 to 0.5. The female antenna was macewith short and rare hair. The male parasitoid had straight antenna, and had a lot of hair.The totalnumber of parasitoid Trichogramma spcollected from Langowan, Tompaso, Kakas, and Tondanowas322. The abundance of parasitoid Trichogramma sp was different in each sampling location. Thehighest was collected in Langoan (115) followed by Kakas (86), Tompaso (64) and Tondano (57).Attacking percentage of rice stem borer wasvaried between sampling location. The average of attackingpercentage on each location was 3,51%.The highest of attacking percentage was Langowan (4.53%)followed Kakas (4.24%), Tompaso (3.40%)and Tondano (2.27%.). ABSTRAKTujuan penelitian ini adalah untuk mengetahui karakter morfologi parasitoid Trichogramma sp padamasing-masing lokasi pengambilan contoh, mengetahui kelimpahan parasitoid, dan mendapatkan datapersentase serangan hama penggerek batang padi. Hasil identifikasi didapatkan tubuh seranggadewasa parasitoid berukuran 0,4 – 0,5 cm, antenna betina berbentuk ganda, berbulu pendek dantumbuh jarang, antenna jantan bentuk lurus dan banyak ditumbuhi bulu/ rambut-rambut. Hasil koleksikelompok telur hama penggerek batang padi sawah di Wilayah Langowan, Tompaso, Kakas, danTondano muncul parasitoid Trichogramma sp. dengan total 322 parasit. Terdapat perbedaankelimpahan parasitoid Trichogramma sp. yang ditemukan dimasing-masing lokasi studi. Kelimpahanpopulasi parasitoid tertinggi di wilayah Langowan (115), kemudian diikutio berturut-turut Kakas (86),Tompaso (64), dan Tondano (57). Persentase serangan hama penggerek batang padi sawahberfluktuasi dimasing-masing lokasi studi..Rata-rata persentase serangan pada keseluruhan lokasipengamatan mencapai 3,51%. Wilayah langowan merupakan persentase tertinggi serangan hamapenggerek batang padi mencapai 4,53%, diikuti berturut-turut Kakas 4,24%, Tompaso 3,40% danterendah Tondano hanya 2,27%.

Electron microscope study of the effects of radiation on insect fertility

1990 ◽  
Vol 48 (3) ◽  
pp. 72-73
Author(s):  
Judy Ju-Hu Chiang ◽  
Robert Kuo-Cheng Chen
Keyword(s):  
Electron Microscopy ◽  
Germ Cell ◽  
Germ Cells ◽  
Electron Microscope Study ◽  
Radiation Treatment ◽  
Light And Electron Microscopy ◽  
Stem Borer ◽  
Metabolic Energy ◽  
Rice Stem Borer ◽  
Effects Of Radiation

Germ cells from the rice stem borer Chilo suppresalis, were examined by light and electron microscopy. Damages to organelles within the germ cells were observed. The mitochondria, which provide the cell with metabolic energy, were seen to disintegrate within the germ cell. Lysosomes within the germ cell were also seen to disintegrate. The subsequent release of hydrolytic enzymesmay be responsible for the destruction of organelles within the germ cell. Insect spermatozoa were seen to lose the ability to move because of radiation treatment. Damage to the centrioles, one of which is in contact with the tail, may be involved in causing sperm immobility.

Double ryanodine receptor mutations confer higher diamide resistance in rice stem borer, Chilo suppressalis

2021 ◽  
Author(s):  
Jing‐Mei Huang ◽  
Hao Sun ◽  
Lin‐Feng He ◽  
Chong Liu ◽  
Wen‐Chao Ge ◽  
...  
Keyword(s):  
Ryanodine Receptor ◽  
Stem Borer ◽  
Chilo Suppressalis ◽  
Rice Stem Borer

scholarly journals Metabolism of the optical isomers of cyanofenphos in rice stem borer larvae.

1978 ◽  
Vol 42 (2) ◽  
pp. 445-450 ◽  
Author(s):  
Hideo OHKAWA ◽  
Nobuyoshi MIKAMI ◽  
Junshi MIYAMOTO
Keyword(s):  
Stem Borer ◽  
Optical Isomers ◽  
Rice Stem Borer

Knockdown of the GABA receptor RDL genes decreases abamectin susceptibility in the rice stem borer, Chilo suppressalis

2019 ◽  
Vol 153 ◽  
pp. 171-175 ◽  
Author(s):  
Xiangkun Meng ◽  
Xuemei Yang ◽  
Nan Zhang ◽  
Heng Jiang ◽  
Huichen Ge ◽  
...  
Keyword(s):  
Gaba Receptor ◽  
Stem Borer ◽  
Chilo Suppressalis ◽  
Rice Stem Borer

scholarly journals Effectiveness Test of Parasitization by Parasitoid Tricogramma japonicum in Controlling White Rice Stem Borer (Scirphopaga innotata)

2021 ◽  
Vol 2 (1) ◽  
pp. 25-30
Author(s):  
Susilawati Astrodjojo ◽  
Suratman Sudjud ◽  
Sri Soenarsih DAS
Keyword(s):  
Block Design ◽  
Stem Borer ◽  
Plant Age ◽  
High Yield ◽  
Intensity Parameter ◽  
Factor B ◽  
White Rice ◽  
Rice Stem Borer ◽  
Randomized Block Design ◽  
Essential Food

Rice is an essential food crop besides corn and soybeans. The need for rice each year increases along with population growth. One of the pests affecting rice is the white rice stem borer. The present research aimed to test the effectiveness and to examine the interaction between plant age and the number of Tricogramma japonicum parasitoid. The research was carried out at the Agrotechnology Laboratory of the Faculty of Agriculture, Khairun University, Ternate, and the rice fields of Bumi Restu village SP I, East Wasile district. The research design operative was a randomized block design where factor A (A1 = 21 DAS, A2 = 42 DAS, A3 = 56 DAS) was the age of the plant, and factor B (B0 = 0, B1 = 50, B2 = 100, B3 = 150) was the number of eggs of Corcyra cephalonica. Biological control using different amounts of Trichogramma japonicum parasitoid led to different interactions and results for each tested parameter. For the number of egg groups, there was no interaction with plant age, but the treatments which were found effective in suppressing stem borer populations were B2 and B3 (100 and 150). The most effective pias as indicated by damage intensity parameter was B3 (150), which was applied to plants aged 21 DAP. Furthermore, for plant height, different number of parasitoids poses significantly effective results. Percentage unhulled grain of pias B3 (150) causes insignificant damage. For production there is no interaction with plant age, but pias B2 (100) shows high yield. The conclusion is that pias B3 (150) applied to 21 days of plants is very effective in controlling white rice stem borer.

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