Showing 5 results for Peach
Fariba Ghaderi,
Volume 1, Issue 2 (9-2012)
Abstract
Root and crown rot is an important disease in Kohgiluyeh and Boyerahmad province peach orchards. Its signs are wilting, general weakness, loss of foliage and sometimes sudden wilt and death of the tree. To isolate the pathogen, used corn meal-agar with antibiotics, Delvasid, Ampicillin and rifampicin medium. Pathogen is Phytophthora cactorum. For pathogenesis test, 2 inoculation methods, to a tree branch or contaminated soil around the roots and crown of seedling is used. Inoculation roots and crowns of seedlings and saplings of six varieties of peaches with this pathogen, showed that Takheh is resistant, Alberta, Redhoon and Mashhad red peach are semi-resistant, Angiri and J.H.Hill are sensitive to the disease
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.
Abdollah Ahmadpour,
Volume 7, Issue 2 (9-2018)
Abstract
Ahmadpour A. 2018. Review of shot-hole disease of stone-fruit trees. Plant Pathology Science 7(2):1-13. DOI: 10.2982/PPS.7.2.1
Shot-hole caused by Stigmina carpophila , is an important disease of stone fruit trees worldwide including Iran. The pathogen produces sporodochia bearing sympodial conidiophores, bearing conidia which have often 3-5 cells. Pathogen has wide host range and can infect almost all species of the genus Prunus. The pathogen overwinters as mycelium in twig cankers and blighted buds or in it is associated with dormant buds. Temperature and duration of wetness are important factors on disease incidence and its severity. The pathogen penetrates the plant indirectly through stomata or directly with its appressoria. Because of the importance of shot hole disease in Iran, symptoms, morphological characteristics of the pathogen, epidemiological factors and methods of disease management are discussed in this review.
Hamid Sadeghi Garmaroodi, Seyed Yaghob Seyed Masoumi, Ashraf Nankali,
Volume 11, Issue 1 (3-2022)
Abstract
Sadeghi Garmaroodi H, Seyed Masoumi SY, Nankali A (2022) The reaction of thirteen peach and nectarine cultivars to Verticillium wilt. Plant Pathology Science 11(1):60-73. Doi: 10.2982/PPS.11.1.60.
Introduction: Verticillium wilt, caused by Verticillium dahliae, is one of the most important soil-borne diseases of stone-fruit trees. Materials and Methods: Samples showing evidence of Verticillium wilt were collected from stone fruit orchards in the suburbs of Shahroud and Damavand and four isolates of V. dahliae were obtained. The fungal inoculum was prepared on sterile wheat grains and the response of 13 peach and nectarine cultivars propagated by grafting on GF305 (almond-peach hybrid) rootstock was inoculated with it in the canopy area in the garden in early spring. Sixteen weeks after inoculation, disease severity was recorded on a three-point scale. Results: All peach and nectarine cultivars were classified as very susceptible, susceptible, or semi-susceptible and none of them showed resistance. The Nectarine Independence cultivar was highly susceptible to disease, while the peach cultivar had the lowest disease severity index and was therefore classified as semi-susceptible. Conclusion: Among these cultivars, the Romestar peach cultivar is less susceptible to the disease.
Former Ms.c. Saeed Sharify Rostam-Abady, Dr. Mahdieh Rostami, Dr. Farahnaz Jahanshahi Afshar, Fariba Ardeshir,
Volume 12, Issue 1 (3-2023)
Abstract
Sharify Rostam-Abadi, S., Rostami, M., Jahanshahi Afshar, F., Ardeshir, F. (2023). Three plant-parasitic nematodes of the family Longidoridae from orchards of Rafsanjan county, Iran. Plant Pathology Science 12(1),12-24.
Introduction: Longidoridae is a family of plant-parasitic nematodes belonging to the order Dorylaimida, that cause damage to most agricultural crops especially fruit trees by direct damage and also transmitting some plant pathogenic viruses. Considering the lack of prior research studies on this topic in the fruit orchards of Rafsanjan region, identifying and monitoring their population is important. Materials and Methods: In a study that was conducted to identify plant-parasitic nematodes of horticultural products in Rafsanjan city, some soil samples were collected from the rhizosphere of various fruit trees, in 2020. The nematodes were extracted from the soil samples using two methods, centrifugal flotation-sieving and tray technique, fixed and transferred to the anhydrous glycerin. After preparing permanent slides, the nematodes were studied using a light microscopy. The nematode species were identified based upon morphological and morphometric data using relevant valid references. Results: In this study, three species of Dorylaimida order belonging to the Longidoridae family including the two genera: Longidorus (L. africanus) and Xiphinema (X. vuittenezi and X. index) were obtained from the rhizosphere. Also, in order to confirm the traditional identification of X. vuittenezi, this species was molecularly studied using D2-D3 extension fragment of LSU rDNA. The obtained sequence of the species was 100% identical to the sequences of the other populations of X. vuittenezi in the GenBank. Conclusion: This study shows that regional nematode population monitoring needs more attention.
