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Resistance of melon to the carmine spider mite, Tetranychus cinnabarinus (Boisduval) (Acari: Tetranychidae)*

Published online by Cambridge University Press:  10 July 2009

F. Mansour ,
Z. Karchi  and
N. Omari
F. Mansour
Affiliation:
Agricultural Research Organization, Newe Ya'ar Regional Experiment Station, P.O. Haifa 31999, Israel
Z. Karchi
Affiliation:
Agricultural Research Organization, Newe Ya'ar Regional Experiment Station, P.O. Haifa 31999, Israel
N. Omari
Affiliation:
Agricultural Research Organization, Newe Ya'ar Regional Experiment Station, P.O. Haifa 31999, Israel
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Abstract

The resistance of 32 melon lines to Tetranychus cinnabarinus (Boisduval) was studied in Israel. Average counts ten days after infestation, at the fourth-leaf stage, ranged from 3·5 to 57 mites per four leaf discs 1 cm in diameter; six lines had significantly low counts, ranging from 0·9 to 1·5 mites per four leaf discs. Fourteen of the lines were also tested at the flowering stage. No mites were found on two lines, and on a third line very few mites were observed. All three lines also had had significantly low mite counts at the fourth-leaf stage. The results suggest there is a definite variation among melon lines in resistance to mite infestation.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 77 , Issue 4 , December 1987 , pp. 603 - 607
Copyright
Copyright © Cambridge University Press 1987

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