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KMID : 0613819990090020121
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Journal of Life Science
1999 Volume.9 No. 2 p.121 ~ p.126
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Differences of the Honeydew Excretion in Growing Characteristics of the Brown Planthopper, Nilaparvata lugens St${\aa}$l, biotypes on different Cultives of Rice with Various Resistance Genes
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Abstract
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Some attempts were made to investigate the honetdew excretion of the brown planthopper(BPH), Nilaparvata lugens St${\aa}$l, biotypes in terms of instar nymph, days after emergence, macropterous and brachypterous mated and unmated female, and macropterous female with different sources fed on 60-day-old rice cultivars with different resistance genes. The feeding amount of the BPH biotypes was measured by using the honeydew excretion test. The feeding amount of fifith instar on Miryang 23 with no resistance gene was higher than that of Cheon-gcheongbyeo with Bph-1 gene by two times. Macropterous and brachypterous females showed low feeding amount at first day after emergence, but they showed high feeding amount from second days after emergence. Also the feeding amount of brachypterous female was higher than that of macropterous female. In addition, the feeding amount of BPH was in the order of nymph
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