نتایج جستجو برای: a micrantha wild
تعداد نتایج: 13459303 فیلتر نتایج به سال:
ABSTRACT Secondary metabolites from weeds have potential as a natural herbicide and are safe for the main crop. This study aimed to screening secondary in Mikania micrantha extract their effect on agronomic, physiological histological characteristics of barnyardgrass lowland rice. A non-factorial randomized block design was used, with concentrations (0; 20; 40; 60; 80; 100 %) 2,4-D dimethyl ami...
آگاهی از سیستم تولید مثلی گونههای گیاهی به تعیین تغییرات ژنتیکی و سازگاری آنها در صورت کاشت در محیطهای جدید کمک خواهد کرد. با توجه به اهمیت اسپرس به عنوان گیاهی علوفهای، بذر سیزده جمعیت اسپرس (Onobrychis) شامل گونههای یکساله O. crista-galli، O. pulchella، O. caput-galli و O. micrantha و همچنین دو گونه زراعی و چند ساله O. viciaefolia و O. altissima در سال زراعی 89-1388 در قالب طرح بلوکهای...
The aim of this study was to investigate the body shape and morphological comparison between the populations of wild (marine) and farmed common carp using geometric morphology. For this purpose, 65 pieces of fish including 23 wild common carp and 42 farmed common carp were sampled. The samples were then photographed and 16 landmarks were identified on the images. Procrast analysis was used in o...
A field experiment was conducted to evaluate the interference effects of wild barley (Hordeum spontaneum L.) on wheat (Triticum aestivum L.) yield, in 2009. The effects of different densities of wild barley (0, 25, 50, 75, 100, 125 plants m-2) in interferences with wheat at density of 300 plants m-2 were studied in a completely block design with three replications. Results showed that with incr...
forty-one wild sheep (ovis ammon orintalis) from kabodan island of national park of urmialake (north-west of iran), were examined during a period of six months from october 2002 tomarch 2003, for helminthes and coccidian infection. the numbers of oocyst and eggs per gram offaeces (opg & epg) were determined by the centrifuge flotation technique using saturated sugarsolution. the rate of inf...
Drought stress is one the most limiting factors for crop production worldwide. The wide ecological and environmental dispersion of crop wild relatives, generates a high potential of their adaptive diversity to abiotic stresses such as drought. In this study 21 (including 10 cultivated and 11 wild barley (Hordeumvulgaressp. spontaneum))genotypes were evaluated under three soil water conditions f...
background : this study was aimed to collect wild rodents for endoparasites determination in some parts of sistan and baluchistan province, southeastern iran nearby pakistan and afghanistan countries. methods : a total of 100 wild rodents were captured alive with cage traps. various samples were collected from blood and feces, also impression smear prepared from different organs. the samples we...
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