Karyotype studies on grape phylloxera (<i>Daktulosphaira vitifoliae</i> FITCH)

Authors

  • Astrid Forneck
  • Y. Jin
  • A. Walker
  • R. Blaich

DOI:

https://doi.org/10.5073/vitis.1999.38.123-125

Keywords:

chromosome, Daktulosphaira vitifoliae, karyotype, phylloxera

Abstract

A cytogenetic technique was developed to produce suitable chromosome spreads for phylloxera karyotype analysis. The karyotype for pathogenetic phylloxera was 2 n = 10. Karyotypes from haploid sex cells were found to vary between n = 5 and n = 6, the latter possibly indicating an aneuploidic aberration. Tetra- and polyploid cells were detected in somatic trophocytes. Preparation of phylloxera sex and somatic cells for chromosomal analysis reported here enables the study of genetic variation on a chromosomal scale.

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Published

2015-07-30

Issue

Vol. 38 No. 3 (1999): Vitis

Section

Article

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