Introducing of producing factors and production mechanism of Trehala manna in Khorasan | ||
| تحقیقات گیاهان دارویی و معطر ایران | ||
| Article 5, Volume 14, Issue 1 - Serial Number 14, January 2003, Pages 39-54 PDF (1.92 M) | ||
| Document Type: Research Paper | ||
| Authors | ||
| M. Kashki; A. Kalantari; M. Abbasi | ||
| Natral Resources and Livestock Research Center of Khorassan, Mashnad, Iran | ||
| Abstract | ||
| Identification of mannifer plants and determination of their provenances are necessary for economic and sustainable exploitation of natural resources. In this, investigation on plants with general name of Globe tistyle was carried out in khorassan province. The method of study includes revviewing scientific references, field practices including collection of various species of Echinops spp., derermination of active provenances, collection of biological factor processing manna and finally both studing of biology of producer factor and production mechanisms. The results indicate the sources and factors producing Trehala manna are active in three regions including Nehvandan, Sabzevar and Bardaskan, but there is not any local or national exploitonal exploitation from the host plants. Also it is found that the host plant is Echinops robustus from family Asteraceae and producer insect is Larinus onopordi from family Curculionidae. This insect has only one generation Per year initiation from March- April to September- October. Furthe more, the manna is produced by both feeding secretive function of the larva in various ages processing host plant tissues and after using for its metabolic functon, the surplus is secreted as manna from downer labium of insect glands. These secretions crystalized gradually from a liquid form to solid..Chemical analysis indicates the manna constitues of trehalose sugar (23%), Starch (6%), musilage (15.8%), albaminoids substances (14%) and ash (4%). Thrapaetic properties of this manna correlate to the active substances containing mostly musilage, starch and sugar. The high amounts of these substances have a significant effect on diseases of respiratory system. | ||
| Keywords | ||
| Production mechanism; Echinops robustus; Larinus onopordi; biology; manna and exploitation | ||
| References | ||
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