A B C E G I K L M N O P R S T V W Z
PE PH PI

Phylloxera

Grape phylloxera (Daktulosphaira vitifoliae, family Phylloxeridae), commonly just called Phylloxera, is a pest of commercial grapevines worldwide, originally native to eastern North America. These tiny, pale yellow sap-sucking insects, related to aphids, feed on the roots of grapevines. In Vitis vinifera, the resulting deformations ("nodosities" and "tuberosities") and secondary fungal infections can girdle roots, gradually cutting off the flow of nutrients and water to the vine. Nymphs also form protective galls on the undersides of grapevine leaves and overwinter under the bark or on the vine roots; these leaf galls are not found on vines grown in California.
Synonym: Grape phylloxera
Source: http://en.wikipedia.org/wiki/Phylloxera
Last modified: 12 April 2009
Editors: Nik D , Smita N
© 2008 Nik D FeedbackLogin | XHTML | CSS Powered by Glossword 1.8.11