Acta Entomologica Sinica (1998) 41, 275-279

Yingfang Xiao, Zhengyuan Gu, Guang Qiu, Ban Lu and Yaoqun Wang (1998)
[Track monitoring of the biotype of brown planthopper (Nilaparvata lugens) immigrating into rice field in Jiang-Huai region]
Acta Entomologica Sinica 41 (3), 275-279
Abstract: The nature of the biotype of the brown planthopper (BPH) immigrating into rice field was recently studied. Results indicated that no obvious differences in virulence, rate of survival, honeydew excretion, zymograms of the esterase isozyme had been found between the immigrant populations and the primitive population of BPH on susceptible cultivar Nanjing 11. Therefore, the immigrant populations of BPH were still of biotype I in Jiang-Huai rice region, but their virulence to Mudgo had developed a little bit. The virulence to Mudgo decreased down to scale 1.0 when the BPH biotype II fed on susceptible varieties for 8 generations, showing its virulent unstability.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Chinese)

Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Nilaparvata lugens	Rice (Oryza)