نتایج جستجو برای: didymella rabiei
تعداد نتایج: 402 فیلتر نتایج به سال:
گیاه نخود سومین لگوم مهم جهان بعد از لوبیا و نخود فرنگی است. تنشهای زیستی و غیر زیستی متعددی باعث کاهش عملکرد این محصول می شوند که در میان آنها، بیماری برق زدگی نخود یکی از مهمترین عوامل محدودکننده تولید نخود در بیشتر مناطق دنیا است. توسعه و کاربرد ارقام مقاوم مؤثرترین و اقتصادیترین راهبرد مدیریت این بیماری است. به منظورگزینش ژنوتیپهای مقاوم نخود، واکنش 200 ژنوتیپ منتخب بانک ژن گیاهی طی دو ...
A calendar of fungal spore seasons for Szczecin during 2013 was established using a 7-day volumetric Lanzoni trap. Thirty-five spore taxa were identified. The dominant spore types detected were Cladosporium (66%), Didymella (29%), Alternaria (1.67%), and Leptosphaeria type (1.21%). The spores were present throughout the study year. However, there was a wide daily fluctuation in the concentratio...
Cell suspension cultures of two chickpea (Cicer arietinum L.) cultivars, resistant and susceptible towards the chickpea pathogen Ascochyta rabiei, were compared with regard to elicitor-induced changes in phytoalexin and isoflavone accumulation. The elicitor was isolated from fermentergrown mycelium of A. rabiei and it mainly consisted of glucose, mannose and N-acetylgalactosamin. Time course an...
A pathogenesis-related protein induced by infection with Ascochyta rabiei was purified from intercellular washing fluid of chickpea (Cicer arietinum L.) leaves. Amino-terminal sequencing identified the protein, named PR-5a, as a thaumatin-like protein. The isoelectric point was determined with 6.5 and the molecular mass is 16 kDa. Therefore, chickpea PR-5a is the first dicot member of a TLP sub...
Fungal colonization was determined for females and cysts of Heterodera glycines on soybean roots or in rhizosphere soil from a Florida soybean field. A total of 1,620 females and cysts were examined in 1991, and 1,303 were examined in 1992. More than 35 species of fungi were isolated from females and cysts. The frequency of fungi colonizing white and yellow females was low, but a high frequency...
Didymella bryoniae (anamorph Phoma cucurbitacearum) is an ascomycete that causes gummy stem blight, a foliar disease that occurs on cucurbits in greenhouses and fields throughout the world. In a previous study using RAPD analysis, little genetic diversity was found among isolates of D. bryoniae from New York and South Carolina, USA. Here we report the use of amplified fragment length polymorphi...
There is an error in the seventh sentence of the “Plant materials, tissue collection, hormone treatment and A. rabiei infection” section of the Material and Methods. The sentence should read: The spore suspension of freshly grown A. rabiei cultures (2 X 10 spores/mL) were sprayed onto 3 week old phytotron-grown plants and almost one-third of the aerial part of the respective samples were collec...
The widely accepted models describing the emergence of domesticated grain crops from their wild type ancestors are mostly based upon selection (conscious or unconscious) of major features related either to seed dispersal (nonbrittle ear, indehiscent pod) or free germination (nondormant seeds, soft seed coat). Based on the breeding systems (self-pollination) and dominance relations between the a...
We present the prototypical workkow management system Panta Rhei which was designed to support various types of workkows in an uniform and elegant way. The main characteristics of this system are its exibility, the lean architecture, the integration in the Web, the transactional features and its support of process management. We discuss the basic concepts of the system, its architecture and its...
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