نتایج جستجو برای: podosphaera fugax on geranium dissectum

تعداد نتایج: 8409807  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یاسوج - دانشکده کشاورزی 1391

سفیدک های پودری قارچ های انگل اجباری هستند که خسارت شدیدی به گیاهان وارد می آورند. به منظور شناسایی این قارچ ها در استان کهگیلویه و بویراحمد، از گیاهان بیمار در مناطق مختلف این استان نمونه برداری گردید. با مطالعه ی کنیدیوم ها، کنیدیوم برها، آسکوکارپ، آسک ها و آسکوسپورهای این قارچ ها و با استفاده از کلید معتبر شناسایی گونه های این قارچ ها، 20 گونه سفیدک پودری متعلق به 6 جنس blumeria، erysiphe،...

2018
Zhuo Zhang Luyun Luo Xinqiu Tan Xiao Kong Jianguo Yang Duanhua Wang Deyong Zhang Decai Jin Yong Liu

Phyllosphere microbiota play a crucial role in plant-environment interactions and their microbial community and function are influenced by biotic and abiotic factors. However, there is little research on how pathogens affect the microbial community of phyllosphere fungi. In this study, we collected 16 pumpkin (Cucurbita moschata) leaf samples which exhibited powdery mildew disease, with a sever...

Journal: :Journal of nematology 1980
M G Bookbinder J R Bloom

Uromyces phaseoli, the causal agent of bean rust, suppressed shoot and root growth of three bean cultivars, reducing root weight more than shoot weight. The greatest suppression of root weight was on the cultivar that appeared most susceptible by visual ratings of shoot symptoms. Meloidogyne incognita suppressed shoot and root growth of all test cultivars; root weight reductions differed among ...

Journal: :Phytopathology 2008
D H Gent W W Turechek W F Mahaffee

The incidence of hop powdery mildew on leaves, caused by Podosphaera macularis, collected from 1,606 transects in 77 commercial hop yards in Oregon and Washington over 9 years was used to assess variability in heterogeneity of disease and the estimated binary power law parameters. Spatial analyses of data sets were conducted at the level of individual rows (row level) and multiple rows within a...

2013
Zul-Atfi Ismail Narimah Kasim

The practices of conventional methods for maintenance management in Malaysian Polytechnic faced many issues due to poor service delivery, inadequate finance, poor maintenance plan and maintenance backlogs. The purpose of this study is to improve the conventional method practices which tend to be ineffective in Malaysian Polytechnic. The case studies were conducted with eight Polytechnics from f...

2016
Ali Safaie Farahani Seyyed Mohsen Taghavi

Xanthomonas hortorum pv. pelargonii is the causal agent of bacterial blight of geranium. A specific and rapid real-time PCR assay for detecting the bacterium in plant was developed in this study. We compared sensitivity of conventional and real-time PCR for detection of the pathogen in inoculated plants. For application to disease management programs, PCR amplification must be able to detect la...

Journal: :Phytopathology 2003
Ana Beatriz Moreno Alvaro Martínez Del Pozo Marisé Borja Blanca San Segundo

ABSTRACT Botrytis blight (gray mold), caused by Botrytis cinerea, is one of the most widely distributed diseases of ornamental plants. In geranium plants, gray mold is responsible for important losses in production. The mold Aspergillus giganteus is known to produce and secrete a basic low-molecular-weight protein, the antifungal protein (AFP). Here, the antifungal properties of the Aspergillus...

2013
Omar Fiz Pablo Vargas Marisa Alarcón Carlos Aedo José Luis García Juan José Aldasoro Mark P. Simmons Rama Devi

Chloroplast (trnL–F and rbcL) sequences were used to reconstruct the phylogeny of Geraniaceae and Hypseocharitaceae. According to these data Hypseocharitaceae and Geraniaceae are monophyletic. Pelargonium and Monsonia are sisters to the largest clade of Geraniaceae, formed by Geranium, Erodium and California. According to molecular dating and dispersal-vicariance analysis, the split of the stem...

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