Response of cucurbit rootstocks to Pythium aphanidermatum

Q. S. Al-Mawaali, A. M. Al-Sadi, A. J. Khan, H. D. Al-Hasani, M. L. Deadman

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Damping-off and vine decline diseases affect most greenhouse cucumber crops in Oman, with losses frequently exceeding 25% of seedlings and adult plants. As a consequence of some recent reports that disease control using metalaxyl fungicides were ineffective, seven local and introduced rootstocks were assessed for their response to Pythium aphanidermatum. The rootstocks were also tested for grafting compatibility and production potential under greenhouse conditions. During artificial inoculation trials, no damping-off symptoms were observed in the Hercules and Titan varieties, ridge gourd or sponge gourd. In three separate greenhouse trials, Titan, Hercules and squash var. Magda showed no damping-off or vine decline symptoms up to 45 days after transplanting. When cucumber was grafted onto the seven rootstocks, no symptoms were observed in the cucumber plants grafted onto Titan and Hercules rootstocks, whereas the cucumber grafted onto the other rootstocks showed varying levels of damping-off and vine decline diseases (10-40%). The Titan and Hercules rootstocks significantly increased the vegetative growth and the fruit number, weight and length compared to the self-grafted cucumbers, non-grafted cucumbers and cucumbers that were grafted onto the other rootstocks (P <0.05). To the best of our knowledge, this study is the first to examine the influence of grafting on the resistance to Pythium and on the vegetative growth and yield of greenhouse cucumbers.

Original languageEnglish
Pages (from-to)64-68
Number of pages5
JournalCrop Protection
Volume42
DOIs
Publication statusPublished - Dec 2012

Fingerprint

Pythium aphanidermatum
Cucurbitaceae
cucumbers
rootstocks
damping off
vines
signs and symptoms (plants)
greenhouses
grafting (plants)
vegetative growth
Luffa acutangula
Luffa aegyptiaca
metalaxyl
Oman
Pythium
squashes
mature plants
transplanting (plants)
fungicides
disease control

Keywords

  • Resistance
  • Tolerance
  • Vine decline

ASJC Scopus subject areas

  • Agronomy and Crop Science

Cite this

Al-Mawaali, Q. S., Al-Sadi, A. M., Khan, A. J., Al-Hasani, H. D., & Deadman, M. L. (2012). Response of cucurbit rootstocks to Pythium aphanidermatum. Crop Protection, 42, 64-68. https://doi.org/10.1016/j.cropro.2012.07.017

Response of cucurbit rootstocks to Pythium aphanidermatum. / Al-Mawaali, Q. S.; Al-Sadi, A. M.; Khan, A. J.; Al-Hasani, H. D.; Deadman, M. L.

In: Crop Protection, Vol. 42, 12.2012, p. 64-68.

Research output: Contribution to journalArticle

Al-Mawaali, QS, Al-Sadi, AM, Khan, AJ, Al-Hasani, HD & Deadman, ML 2012, 'Response of cucurbit rootstocks to Pythium aphanidermatum', Crop Protection, vol. 42, pp. 64-68. https://doi.org/10.1016/j.cropro.2012.07.017
Al-Mawaali, Q. S. ; Al-Sadi, A. M. ; Khan, A. J. ; Al-Hasani, H. D. ; Deadman, M. L. / Response of cucurbit rootstocks to Pythium aphanidermatum. In: Crop Protection. 2012 ; Vol. 42. pp. 64-68.
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