Abstracts must be submitted before September 1st, 2007.
At least one author per paper must register and pay for the conference on or before
September 1, 2007 for the paper to be included in the proceedings and program.
Papers with no
registered author will be WITHDRAWN.
Use
Latin names in Italics for organisms when first mentioned.
Use common names of
chemicals (no trade names are allowed).
A4 page;
all text in Times New Roman, 2.5 cm margins.
Title:
Centered, font 14 pt. Bold, followed by empty line
Authors:
Centered, font 12 pt. Last name, Initials; Presenting author underlined,
followed by empty line.
Affiliation:
Centered, addresses of all authors, e-mail address of first author,
followed by empty line .
Text:
Justified, font 12 pt. Single spaced. Maximum number of words: 250, followed by empty line.
Key-words:
Up to 5 words separated by a comma.
Preferred Topic Number:
Poster or Oral
Please send as a Microsoft Word file
to wgarid@agri.huji.ac.il.
The file name must include your name. Do not use spaces in the file name. Use underscore
instead.
For example: Moshe_Sibony.doc. If submitting more than one abstract, use
sequential numbers.
New Method for in situ Monitoring of the Underground Development of Orobanche cumana in Sunflower (Helianthus annuus) with minirhizotron
Eizenberg H1, Shtienberg D1, Silberbush M2 and Ephrath JE2
1Department
of Phytopathology and Weed Research, Agricultural Research
Organization,
Newe Ya’ar Research Center, P.O. Box 1021, Ramat Yishay,
30095, Israel.
eizenber@volcani.agri.gov.il
2Wyler
Department of Dryland Agriculture, Jacob Blaustein Institutes for
Desert Research,
Ben-Gurion University of the Negev, Sede-Boqer Campus,
84990, Israel
The aim of this study was to develop an in situ, non-destructive method for observation and monitoring of the underground developmental stages of the root parasite Orobanche cumana. The parasitic weed Orobanche causes severe damage to vegetables and field crops. Most of the damage occurs during the underground, unobservable parasitism stage. Sunflower (Helianthus annuus cv. Adi) plants were planted in a soil that was artificially inoculated with O. cumana seeds. Clear Plexiglas minirhizotron observation tubes were inserted into the soil. Seed germination, early stage of penetration, and formation of tubercles and spikes were observed non-destructively and were monitored as video images throughout the growing season by means of a minirhizotron TV camera. Use of this technology enabled monitoring the complete individual parasite life cycle, from germination to shoot emergence. In addition, the effect of the systemic herbicide imazapic on the development of O. cumana was inspected and quantified. This novel methodology facilitates the in situ study of major aspects of the host-parasite interaction, parasitism dynamics, parasite growth rate and the effect of chemical treatments on the parasite.
Key words: broomrape, chemical control, image analysis
Topic Number ___
Oral
Poster size: 90 x 125 cm (portrait).
Text: 34-36 pt.