חיפוש מתקדם
Crop Protection
Joel, D.M., Department of Weed Research, ARO, Newe-ya'Ar Research Center, P.O. Box 1021, Ramat-Yishay 30095, Israel
Parasitic weeds pose a tremendous threat to world agriculture, mainly because they are at present almost uncontrollable. The root parasites Striga (witchweed) and Orobanche (broomrape) are vicious pests in both tropical and sub-tropical areas. A thorough understanding of their biology, including detailed knowledge of the specific mechanisms of parasitism, is needed in order to develop novel control methods. Some main developmental steps are described for the root parasites: seed conditioning and germination, haustorium formation, penetration into host tissues, maturation of the haustorium, and seed production. All these stages can be targeted in order to achieve parasite control. For example, based on our findings regarding gibberellin synthesized during seed conditioning, we were able to prevent parasitism by soil application of an inhibitor of gibberellin synthesis. Other developmental stages, such as germination stimulation, the enzymatic penetration of the haustorium into host tissues, and the source-sink relations between host and parasite are also possible targets for control, and the mechanisms involved may be manipulated for specific control of the parasites. (C) 2000 Elsevier Science Ltd.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
The long-term approach to parasitic weeds control: Manipulation of specific developmental mechanisms of the parasite
19
Joel, D.M., Department of Weed Research, ARO, Newe-ya'Ar Research Center, P.O. Box 1021, Ramat-Yishay 30095, Israel
The long-term approach to parasitic weeds control: Manipulation of specific developmental mechanisms of the parasite
Parasitic weeds pose a tremendous threat to world agriculture, mainly because they are at present almost uncontrollable. The root parasites Striga (witchweed) and Orobanche (broomrape) are vicious pests in both tropical and sub-tropical areas. A thorough understanding of their biology, including detailed knowledge of the specific mechanisms of parasitism, is needed in order to develop novel control methods. Some main developmental steps are described for the root parasites: seed conditioning and germination, haustorium formation, penetration into host tissues, maturation of the haustorium, and seed production. All these stages can be targeted in order to achieve parasite control. For example, based on our findings regarding gibberellin synthesized during seed conditioning, we were able to prevent parasitism by soil application of an inhibitor of gibberellin synthesis. Other developmental stages, such as germination stimulation, the enzymatic penetration of the haustorium into host tissues, and the source-sink relations between host and parasite are also possible targets for control, and the mechanisms involved may be manipulated for specific control of the parasites. (C) 2000 Elsevier Science Ltd.
Scientific Publication
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