Variation in responses of sunflower cultivars to the parasitic weed broomrape

H. Eizenberg*, D. Plakhine, J. Hershenhorn, Y. Kleifeld, B. Rubin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Development of four Orobanche species, O. cumana, O. aegyptiaca, O. ramosa, and O. cernua, was compared on resistant and susceptible sunflower cultivars. Sunflower plants were infected by O. cumana, O. aegyptiaca, and O. ramosa, but not by O. cernua, in field and greenhouse studies. However, cultivating the hosts and parasites in a polyethylene bag system allowed the observation that sunflower induced O. cernua seed germination. This difference demonstrates that O. cernua is unique from the other three species. O. cumana, O. aegyptiaca, and O. ramosa attached to and developed tubercles on the susceptible sunflower 'Adi.' On the resistant 'Ambar' sunflower, a greater percentage of tubercles were degenerated or dead than on the susceptible cultivar. Thus, resistance of Ambar appears to manifest during tubercle development. Seed production of Adi sunflower was greatly reduced with infection by O. cumana.

Original languageEnglish
Pages (from-to)479-484
Number of pages6
JournalPlant Disease
Volume88
Issue number5
DOIs
StatePublished - May 2004

Keywords

  • Egyptian broomrape
  • Root parasite
  • Sunflower broomrape

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