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Showing 2 results for Almond

Raana Dastjerdi, Solmaz Nadi, Sima Damyar,
Volume 7, Issue 1 (3-2018)
Abstract

Dastjerdi R., Nadi S. and Damyar S. 2018. Sooty canker of fruit trees in Iran. Plant Pathology Science 7(1):15-27.
Neofusicoccum mangiferae is the causal agent of branch wilt, blossom blight, canker and dieback on a variety of fruit trees such as almond, hazelnut, apricot, peach, citrus, grape and apple. Cracking and peeling of thin outer layer of bark and exposing black sooty mass of spores is a characteristic feature of disease. Pathogen causes gradual declining and sometimes complete death of trees. The fungus infects the hosts through wounds, created by pruning, frost damage, drought stress, or bark cracks caused by sunburn and develops under hot and sunny weather in summer. Good sanitation, fertilization of trees, adequate irrigation, appropriate pest control, preventing wounds, and avoiding unnecessary pruning are the methods for disease management.

 
Azadeh Habibi, Fariba Ghaderi, Ziaeddin Banihashemi,
Volume 12, Issue 1 (3-2023)
Abstract

Habibi A, Ghaderi F,  Banihashemi Z (2023) Coevolution of Polystigma amygdalinum through a process of host tracking. Plant Pathology Science 12(1):36-45.
     Doi: 10.2982/PPS.12.1.36
Abstract
Introduction: The almond tree (Prunus dulcis) and its wild relative, the mountain almond tree (Amygdalus scoparia), grew up together in the province of Fars in Iran over decades. Red leaf blotch disease caused by Polystigma amygdalinum is one of the most important almond diseases in the world. This research was conducted with the aim of investigating the evolution of this pathogen on its wild and domestic hosts. Materials and Methods: Ascospores suspension of P. amygdalinum isolates obtained from almond in Fars province was inoculated to almond and mountain almond seedlings in a greenhouse. The progress of the disease in the diseased leaves of mountain almond compared to almond was investigated by sectioning with a freezing microtome from the spots created on the leaves. Results: Red leaf blotch spots appeared on the leaves of both types of almonds. Statistical analysis of test data showed that P. amygdalinum isolates from almond are able to cause disease in mountain almond with significantly lower severity, and longer incubation period. Conclusion: The results of this research show that P. amygdalinum, the cause of red leaf blotch disease, have coevolved on cultivated almond through a process of host tracking.



 


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