Effects of some cereal root exudates on germination of broomrapes (Orobanche spp. and Phelipanche spp.)

Kitiş, Yasin Emre; Grenz, Jan; Sauerborn, Joachim (2019). Effects of some cereal root exudates on germination of broomrapes (Orobanche spp. and Phelipanche spp.) Mediterranean Agricultural Sciences, 32(2), pp. 145-150. Akdeniz University, Faculty of Agriculture 10.29136/mediterranean.546564

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Species of broomrape (Orobanche spp. and Phelipanche spp.) are among the most damaging parasitic weed species worldwide. These species reproduce through abundant seed production. Their seeds are protected by complex dormancy mechanisms, in particular a need for host-specific chemical germination cues. Broomrape seeds have been shown to remain viable in the soil for many years. While the depletion of the soil seed bank, e.g. using trap crops that induce suicide germination of broomrape seeds, could potentially be a way to control these weeds, the practical uptake of this approach has remained very limited. To explore the potential of an array of cereal species to serve as trap crop, laboratory experiments were conducted to qualitatively check for the existence of cereal-broomrape interactions and to quantify possible effects on Orobanche/Phelipanche seed banks. For this purpose, seeds of the following cereals were used: wheat, rye, barley, oats, maize, rice, sorghum and pearl millet. Several accessions of O. crenata, O. cumana and P. ramosa were used as parasite species. As host species, pea, sunflower and tomato were grown. Cereal and parasite species were crosswise-combined to assess interactions. Maize was found to be most effective in stimulating the germination of the broomrapes. Among the parasite species, P. ramosa proved most ready to germinate in the presence of cereal root exudates. The interaction was observed in various combinations of maize cultivars and P. ramosa accessions. As a result, strong evidence of germination induction in P. ramosa seeds by maize was collected.

Item Type:

Journal Article (Original Article)

Division/Institute:

School of Agricultural, Forest and Food Sciences HAFL > Resource-efficient agricultural production systems

Name:

Kitiş, Yasin Emre;
Grenz, Jan and
Sauerborn, Joachim

Subjects:

Q Science > QH Natural history > QH301 Biology
S Agriculture > S Agriculture (General)

ISSN:

2528-9675

Publisher:

Akdeniz University, Faculty of Agriculture

Language:

English

Submitter:

Jan Grenz

Date Deposited:

08 Jan 2020 15:09

Last Modified:

08 Jan 2020 15:09

Publisher DOI:

10.29136/mediterranean.546564

Uncontrolled Keywords:

Host-parasite interaction; Induced germination; Trap crop; False host; Parasitic weed control

ARBOR DOI:

10.24451/arbor.9998

URI:

https://arbor.bfh.ch/id/eprint/9998

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