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Articles 61 - 64 of 64
Full-Text Articles in Forest Sciences
The Relationship Between The Form Of Dead Bark And Lignin Content In Scots Pine (Pinus Sylvestris L.), Tomasz Jelonek, Witold Pazdrowski, Magdalena Arasimowicz-Jelonek, Jaroslaw Gzyl, Arkadiusz Tomczak, Jolanta Floryszak-Wieczorek
The Relationship Between The Form Of Dead Bark And Lignin Content In Scots Pine (Pinus Sylvestris L.), Tomasz Jelonek, Witold Pazdrowski, Magdalena Arasimowicz-Jelonek, Jaroslaw Gzyl, Arkadiusz Tomczak, Jolanta Floryszak-Wieczorek
Turkish Journal of Agriculture and Forestry
In this study the proportion of lignin in wood tissue was analysed in 36 Scots pines differing in their form of dead bark. Material for analyses came from pure pine stands aged 89-91 years located in northern Poland. Chemical analyses were performed in the mature wood zone comprising the last 10 diameter increments located at a height of 1.3 m (DBH). Results indicate differences in lignin content and growth rate in pines whose stems were characterized by different forms of dead bark. The study showed significant differences in lignin contents between trees with shell and scaly dead bark and trees …
Putative Agents Of Fig Mosaic Disease In Turkey, Kadri̇ye Çağlayan, Vicente Medina, Mona Gazel, Çi̇ğdem U. Serçe, Luis Serrano, Angeles Achon, Soner Soylu, Oğuzhan Çalişkan, Mustafa Gümüş
Putative Agents Of Fig Mosaic Disease In Turkey, Kadri̇ye Çağlayan, Vicente Medina, Mona Gazel, Çi̇ğdem U. Serçe, Luis Serrano, Angeles Achon, Soner Soylu, Oğuzhan Çalişkan, Mustafa Gümüş
Turkish Journal of Agriculture and Forestry
Leaves from 58 fig tree accessions showing different severity of mosaic and necrotic symptoms were collected in 2 different regions of Turkey and analysed by transmission electron microscope (TEM) and RT-PCR to determine putative causal agents of fig mosaic disease (FMD). Ultrastructural studies showed that double membrane-bound bodies (DMBs) were mainly observed in the parenchyma and mesophyll cells of infected leaves of the cultivars Göklop and Morgüz and some seedlings showing only mosaic symptoms. These bodies were surrounded by a fibrillar matrix in most of the infected cells. Long, flexuous rod-shaped virus-like particles (LFPs) were also observed in vascular tissues …
Variability In Wheat Yield Under Yellow Rust Pressure In Pakistan, Sajid Ali, Syed Jawad Ahmed Shah, Hidayat-Ur Rahman, Muhammad Shahab Saqib, Muhammad Ibrahim, Muhammad Sajjad
Variability In Wheat Yield Under Yellow Rust Pressure In Pakistan, Sajid Ali, Syed Jawad Ahmed Shah, Hidayat-Ur Rahman, Muhammad Shahab Saqib, Muhammad Ibrahim, Muhammad Sajjad
Turkish Journal of Agriculture and Forestry
Wheat yield of 37 wheat varieties along with a susceptible check, Morocco, was studied under yellow rust pressure across 3 locations of North West Frontier Province (NWFP), Pakistan during 2007. Considerable high disease pressure, as revealed by yellow rust severity, was observed at all locations with the maximum (100%) at Cereal Crop Research Institute (CCRI), Nowshera. Disease severity ranged from 0% to 70% for the tested varieties while reached 100% for Morocco with S type of host response. We report the presence of sufficient variability across locations for both yield potential and yellow rust severity. Locations with maximum disease pressure …
Determination Of Pathogenic Variability Of Didymella Rabiei, The Agent Of Ascochyta Blight Of Chickpea In Turkey, Muharrem Türkkan, F. Sara Dolar
Determination Of Pathogenic Variability Of Didymella Rabiei, The Agent Of Ascochyta Blight Of Chickpea In Turkey, Muharrem Türkkan, F. Sara Dolar
Turkish Journal of Agriculture and Forestry
Pathogenic characterization of 64 Didymella rabiei isolates obtained from 5 different regions in Turkey was determined with a set of 7 different chickpea cultivars (ILC 1929, F8, ICC 1903, ILC 249, ILC 482, ILC 3279, and ICC 3996). All the isolates were classified into both 3 pathotypes and 6 physiological races. Of the isolates used in this study, it was determined that 38 (59.4%) belonged to pathotype I, 3 (4.7%) to pathotype II, and 23 (35.9%) to pathotype III. Pathotypes I and III were determined in 5 regions of Turkey including the Mediterranean, Aegean, Southeastern Anatolia, Central Anatolia, and Black …