נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Monitoring physiological races of Podosphaera xanthii (syn. Sphaerotheca fuliginea), the causal agent of powdery mildew in cucurbits: Factors affecting race identification and the importance for research and commerce
Year:
2004
Source of publication :
Phytoparasitica
Authors :
בורגר, יוסף
;
.
כהן, רוני
;
.
קציר, נורית
;
.
Volume :
32
Co-Authors:
Cohen, R., Dept. of Plant Pathology, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel, Dept. of Vegetable Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Burger, Y., Dept. of Vegetable Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Katzir, N., Dept. of Vegetable Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Facilitators :
From page:
174
To page:
183
(
Total pages:
10
)
Abstract:
Identification of the physiological races of Podosphaera xanthii (syn. Sphaerotheca fuliginea), the causal agent of powdery mildew in cucurbits, is based upon the differing responses of various melon cultigens to the pathogen. Eight races of the pathogen have been identified to date in the USA, Africa, Europe and around the Mediterranean Sea, and four new races were reported from greenhouse melons in the major growing area of Japan. Plant responses to powdery mildew may be affected by environmental factors such as light intensity, temperature and humidity, as well as by age and nutritional status of the plants. The same factors affect the accuracy and reliability of race identification. In an attempt to overcome those obstacles, the genetic diversity of P. xanthii was studied using molecular markers. Unfortunately, no correlation was found between DNA polymorphism and the race of the pathogen as identified by biological tests. The usefulness of race identification as a guide for the grower in selecting appropriate cultivars is limited because changes or shifts in the pathogen population are common. Such changes may be found among growing seasons, geographic regions and hosts, and also within a single greenhouse during a single season. On the other hand, race identification is important for basic research and is especially important for the commercial seed industry, which requires accuracy in declaring the type and level of resistance to powdery mildew in its products.
Note:
Related Files :
Cucumis melo
Cucurbits
fungi
Podosphaera fuliginea
Podosphaera xanthii
powdery mildew
Race identification
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
סקירה קצרה
;
.
Language:
אנגלית
Editors' remarks:
ID:
31675
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:04
Scientific Publication
Monitoring physiological races of Podosphaera xanthii (syn. Sphaerotheca fuliginea), the causal agent of powdery mildew in cucurbits: Factors affecting race identification and the importance for research and commerce
32
Cohen, R., Dept. of Plant Pathology, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel, Dept. of Vegetable Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Burger, Y., Dept. of Vegetable Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Katzir, N., Dept. of Vegetable Crops, ARO, Newe Ya'ar Research Center, Ramat Yishay 30095, Israel
Monitoring physiological races of Podosphaera xanthii (syn. Sphaerotheca fuliginea), the causal agent of powdery mildew in cucurbits: Factors affecting race identification and the importance for research and commerce
Identification of the physiological races of Podosphaera xanthii (syn. Sphaerotheca fuliginea), the causal agent of powdery mildew in cucurbits, is based upon the differing responses of various melon cultigens to the pathogen. Eight races of the pathogen have been identified to date in the USA, Africa, Europe and around the Mediterranean Sea, and four new races were reported from greenhouse melons in the major growing area of Japan. Plant responses to powdery mildew may be affected by environmental factors such as light intensity, temperature and humidity, as well as by age and nutritional status of the plants. The same factors affect the accuracy and reliability of race identification. In an attempt to overcome those obstacles, the genetic diversity of P. xanthii was studied using molecular markers. Unfortunately, no correlation was found between DNA polymorphism and the race of the pathogen as identified by biological tests. The usefulness of race identification as a guide for the grower in selecting appropriate cultivars is limited because changes or shifts in the pathogen population are common. Such changes may be found among growing seasons, geographic regions and hosts, and also within a single greenhouse during a single season. On the other hand, race identification is important for basic research and is especially important for the commercial seed industry, which requires accuracy in declaring the type and level of resistance to powdery mildew in its products.
Scientific Publication
You may also be interested in