broomrape, (genus Orobanche), genus of about 150 species of parasitic annual or perennial herbs (family Orobanchaceae). Weed Sci. doi: 10.1007/s00425-011-1568-8, Yoneyama, K., Xie, X., Kusumoto, D., Sekimoto, H., Sugimoto, Y., Takeuchi, Y., et al. Sci. Peagol and peagoldione, two new strigolactone like metabolites isolated from pea root exudates. Most species are primarily subterranean and appear aboveground only to reproduce. Privat, G. (1960). Recherches sur les phanerogames parasites (etude dOrobanche hederae Duby). Crop Prot. doi: 10.1016/j.fcr.2009.06.009, Fernndez-Aparicio, M., Flores, F., and Rubiales, D. (2009b). Ghersa, C. M., and Martinez-Ghersa, M. A. Positive regulation: (1) production by each flower scape of hundreds of thousands of seeds able to survive in the soil for more than 10 years; (2) production by the host plant of strigolactones or glucosinolates that stimulate seed germination (blue arrows). 42, 464469. Commercially available as Bion, field doses of 0.8 kg ha1 are recommended to inhibit P. ramosa parasitism in hemp and tobacco (Gonsior et al., 2004), crops for which resistant varieties are not available. The dynamics of faba bean (Vicia faba L.) parasitism by Orobanche foetida. Omissions? doi: 10.1021/jf904247k, Evidente, A., Cimmino, A., Fernndez-Aparicio, M., Rubiales, D., Andolfi, A., and Melck, D. (2011). (2009). (2012). Bot. 9, 200208. Broomrape attack is more severe on crops growing in low fertility soils. They are attempting to learn if a timely application of an herbicide at a rate high enough to stunt the broomrape, but low enough to spare the tomatoes, can be an effective strategy to minimize crop losses. (2011). Weed Res. Haustorium allows broomrape to attack crops by successive functions, first as host-adhesion organ, and subsequently as invasive organ toward host vascular system where finally establishes vascular continuity allowing the parasite to withdraw water and nutrients from the host (Riopel and Timko, 1995; Joel, 2013). doi: 10.1111/j.1365-3180.2009.00748.x. Incorporation of sulfosulfuron and rimsulfuron directly to the soil provides successful control of preattached stages of broomrape weeds (Eizenberg et al., 2012). The inductor potential of root exudates from a given species varies with the broomrape considered. Imidazolinone-tolerant crops: history, current status and future. Host plant resistance against broomrapes (Orobanche spp. Israeli researchers developed a temperature/moisture model for application of low rates of an ALS inhibitor on processing tomatoes. Nitrogen deficiency as well as phosphorus deficiency in sorghum promotes the production and exudation of 5-deoxystrigol, the host recognition signal for arbuscular mycorrhizal fungi and root parasites. Resistance of red clover (Trifolium pratense) to the root parasitic plant Orobanche minor is activated by salicylate but not by jasmonate. Influence of soil moisture on activity and persistence of the strigol analogue GR 24. Recent approaches for chemical control of broomrape (Orobanche spp.) Effective broomrape control should target the underground mechanisms of crop parasitism in order to meet both the short-term productivity expectations of the farmer and reduction of soil bank in the long run (Figure 1). Plant Physiol. No use, distribution or reproduction is permitted which does not comply with these terms. Manschadi, A. M., Kroschel, J., and Sauerborn, J. The harvest of infested fields or blocks, because of the biology of this weed and its standing as a California Department of Food and Agriculture Class A status, is extremely ill-advised., (Article by Bob Johnson, Sacramento reporter.
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