Variation of brown planthopper population from major rice regions of Peninsular Malaysia

Habibuddin Hashim, . Variation of brown planthopper population from major rice regions of Peninsular Malaysia. pp. 218-224. ISSN 0128-0686

A field survey was conducted in 1986 to identify and monitor changes of the brown planthopper (BPH) (Nilaparvata lugens Stal.) population in major rice growing regions of Peninsular Malaysia. Results indicated a shift in their predominance. Biotype - 1 is still dominant in the east coast but in the west coast the population were of a mixture of biotype-1 biotype-2 and biotype-3 that could attack TN1 (no Bph-resistance gene) IR 26 or Seberang (Bph/gene) and IR 42 or IR 36 (bph2 gene). The susceptibility of Seberang IR 26 and IR 42 in the MADA region could be due to the presence of these newly developed biotypes as a result of extensive planting of varieties carrying those genes before and during the study period. The presence of mixture biotypes in Tanjong Karang could not be explained since the variety such as IR 42 was not widely planted there. The possibility of population migration from North Sumatera to the Peninsular could not be totally excluded. However the variety Rathu Heenathi (with Bph3 gene) still remains highly resistant to all the BPH colonies tested.

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Abstract

A field survey was conducted in 1986 to identify and monitor changes of the brown planthopper (BPH) (Nilaparvata lugens Stal.) population in major rice growing regions of Peninsular Malaysia. Results indicated a shift in their predominance. Biotype - 1 is still dominant in the east coast but in the west coast the population were of a mixture of biotype-1 biotype-2 and biotype-3 that could attack TN1 (no Bph-resistance gene) IR 26 or Seberang (Bph/gene) and IR 42 or IR 36 (bph2 gene). The susceptibility of Seberang IR 26 and IR 42 in the MADA region could be due to the presence of these newly developed biotypes as a result of extensive planting of varieties carrying those genes before and during the study period. The presence of mixture biotypes in Tanjong Karang could not be explained since the variety such as IR 42 was not widely planted there. The possibility of population migration from North Sumatera to the Peninsular could not be totally excluded. However the variety Rathu Heenathi (with Bph3 gene) still remains highly resistant to all the BPH colonies tested.

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Item Type:	Article
Additional Information:	1 ill.; 3 tables; 14 ref. Summary (En Ms)
AGROVOC Term:	ORYZA
AGROVOC Term:	NILAPARVATA LUGENS
AGROVOC Term:	RESISTENCIA A LAS PLAGAS
AGROVOC Term:	MALASIA PENINSULAR/ BIOTIPOS
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:55
URI:	http://webagris.upm.edu.my/id/eprint/19983

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