Aggressiveness of Strains and Inoculation Methods for Resistance Assessment to Bacterial Halo Blight on Coffee Seedlings

2016 ◽  
Vol 165 (2) ◽  
pp. 105-114 ◽  
Author(s):  
Lucas M. R. Rodrigues ◽  
Irene M. G. Almeida ◽  
Flávia R. A. Patrício ◽  
Luís O. S. Beriam ◽  
Karen W. Maciel ◽  
...  
2012 ◽  
Vol 52 (1) ◽  
pp. 366-370 ◽  
Author(s):  
Ting-Jen R. Cheng ◽  
Shi-Yun Wang ◽  
Wen-Hsien Wen ◽  
Ching-Yao Su ◽  
Mengi Lin ◽  
...  

Author(s):  
Nuray Özer ◽  
Halil İbrahim Uzun ◽  
Burak Aktürk ◽  
Cengiz Özer ◽  
Murat Akkurt ◽  
...  

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 792
Author(s):  
Haohui Yang ◽  
Yuxiang Yuan ◽  
Xiaochun Wei ◽  
Xiaohui Zhang ◽  
Haiping Wang ◽  
...  

Raphanus sativus, an important cruciferous vegetable, has been increasingly affected by clubroot disease. Establishing a stable and accurate resistance identification method for screening resistant germplasms is urgently needed in radish. In this study, the influence of inoculum concentration, inoculation methods, and pH of the substrate on disease occurrence was studied. The result showed that the disease index (DI) was highest at 2 × 108 spores/mL, the efficiency of two-stage combined inoculation methods was higher than others, and pH 6.5 was favorable for the infection of P. brassicae. By using this new method, DIs of 349 radish germplasms varying from 0.00 to 97.04, presented significantly different levels of resistance. Analysis showed that 85.06% germplasms from China were susceptible to P. brassicae, whilst 28 accessions were resistant and mainly distributed in east, southwest, northwest, and south-central China. Most of the exotic germplasms were resistant. Repeated experiments verified the stability and reliability of the method and the identity of germplasm resistance. In total, 13 immune, 5 highly resistant and 21 resistant radish accessions were identified. This study provides an original clubroot-tolerance evaluation technology and valuable materials for the development of broad-spectrum resistant varieties for sustainable clubroot management in radish and other cruciferous crops.


2008 ◽  
Vol 53 (2) ◽  
pp. 808-810 ◽  
Author(s):  
Agustina I. de la Iglesia ◽  
Emma J. Stella ◽  
Héctor R. Morbidoni

ABSTRACT Resistance to rifampin (rifampicin), isoniazid, and streptomycin of 69 Mycobacterium tuberculosis isolates was analyzed by an in-house method based on mycobacteriophage D29 and a colorimetric micromethod. Both methods showed sensitivity and specificity values ranging from 93% to 100%. These simple methods offer an option for drug resistance assessment of M. tuberculosis.


1984 ◽  
Vol 104 (2) ◽  
pp. 307-314 ◽  
Author(s):  
N. L. INNES ◽  
JANET CONWAY ◽  
J. D. TAYLOR
Keyword(s):  

2021 ◽  
Author(s):  
Tulja Sanam ◽  
Triveni S ◽  
Sridhar Goud Nerella ◽  
Santosh Nagappa Ningoji ◽  
Suseelendra Desai

Author(s):  
Bih-Yuan Ku ◽  
Ching Liang Wu ◽  
Chun-Fu Lin

This paper presents the development of a qualitative and quantitative assessment of the resistance to ground for the electrically continuous negative rails of a medium capacity transit line of the Taipei Rapid Transit System. Using synchronous potential measurements at three stations we examine potential profiles to locate potential rail sections with low resistance to ground qualitatively. Also the voltage sag values are used to quantitatively calculate rail-to-ground resistance per unit length. The approach presented in this paper requires only voltage measurements with the traction current as the energization source. Thus, this approach can be performed as a routine maintenance procedure to obtain rail-to-ground resistance values from a system-wide point of view.


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