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Triny S Kadir, Triny S
Balai Besar Penelitian Tanaman Padi, Jl. Raya 9, Sukamandi–Subang 41256

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VIRULENCE OF Xanthomonas oryzae pv. oryzae AND REACTION OF RICE GENOTYPES TO THE RACES OFTHE PATHOGEN [Vimlensi Xanthomonas oryzae pv. oryzae dan Reaksi Genotipe Padi Terhadap Ras Patogen] Suryadi, Y; Kadir, Triny S
BERITA BIOLOGI Vol 10, No 2 (2010)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v10i2.1973

Abstract

The objective of the trials is to study host-pathogen relationships under green house test and field experiment.The virulence of Xanthomonas oryzae pv. oryzae (XOO) isolates of races III, and VIII is characterized on rice genotypes with different resistance to bacterial blight (BB) disease. The result shows that the multiplication of the bacterial population on the resistant (IR 36) and susceptible (TN-1) rice genotype is almost similar at initial Aage of infection; however, BB symptom expression as indicated by lesion length and area under disease progress curve (AUDPC) are much faster on TN-1 than that on IR 36 genotype. Based on rice field trial in Pusakanagara Expt. St; W. Java; almost all rice genotypes tested shows susceptible (S) to highly susceptible (HS) against XOO race VIII at generative stage observation.
PENGAMATAN INFEKSI JAMUR PATOGEN SERANGGA Metarhizium anisopliae (Metsch. Sorokin) PADA WERENG COKLAT Suryadi, Y; Kadir, Triny S
BERITA BIOLOGI Vol 8, No 6 (2007)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (496.297 KB) | DOI: 10.14203/beritabiologi.v8i6.830

Abstract

Observation on infection of fungus entomopathogen Metarhizium anisopliae on insect brown plant hopper was carried out using scanning electron microscope (SEM).The infection of M. anisopliae on insect bodies was shown by conidia sporulation on divergent chain with conidia size of 1.6 x 7.8 urn. Based upon SEM observation, the results revealed that fungus hyphae of M.anisopliae was found on insect body i.e. on cuticle as well as on segment between abdomen, legs and insect facet eyes.In epizootic condition, the cadavers were shown can act as source of fungus dissemination on healthy insect when environment (temperature and humidity) was suitable for primary infection.