Role of fruit surface mycoflora, wounding and storage conditions on post-harvest disease development on greenhouse tomatoes

SUMMARYThe effect of three centres of production, two times of lifting and two post-harvest treatments of apparently virus-free seed tubers on sprout development at planting was studied over two seasons. Sprout length and degree of development were determined mainly by the light and temperature conditions during storage. Under similar storage conditions tubers from the most southern region, lifted early and allowed to sprout from lifting produced longer sprouts than those from the more northerly regions, lifted late and sprouted from midwinter. At planting all tubers had sprouts longer than 2·5 cm. Desprouted tubers from the more southern regions had the highest number of sprouts at planting and tubers 'greened' immediately on lifting had the least.An index of sprout development at planting was defined. The conditions and duration of storage had most influence on the degree of development as measured by this index; sprouts were most developed on tubers sprouted over a long period and on those sprouted in a heated glasshouse. The effects of varying centres of production and times of lifting on sprout development at planting were small compared with those readily produced by varying the storage conditions.

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The role of time and storage conditions on the composition of hashish and marijuana samples: A four-year study

Forensic Science International ◽

10.1016/j.forsciint.2019.02.058 ◽

2019 ◽

Vol 298 ◽

pp. 131-137 ◽

Cited By ~ 4

Author(s):

Luca Zamengo ◽

Chiara Bettin ◽

Denis Badocco ◽

Valerio Di Marco ◽

Giorgia Miolo ◽

...

Keyword(s):

Storage Conditions ◽

And Storage

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A Review on the Role of Silicon Treatment in Biotic Stress Mitigation and Citrus Production

Agronomy ◽

10.3390/agronomy11112198 ◽

2021 ◽

Vol 11 (11) ◽

pp. 2198

Author(s):

Mireille Asanzi Mvondo-She ◽

Auges Gatabazi ◽

Mark Delmege Laing ◽

Ashwell Rungano Ndhlala

Keyword(s):

Biotic Stress ◽

Brown Rot ◽

Biotic Stresses ◽

Post Harvest ◽

Citrus Production ◽

Biochemical Mechanisms ◽

The Impact ◽

Soluble Silicon ◽

Post Harvest Disease

This paper reviews the threat of citrus pathogens during citrus production, with a focus on two pre-harvest diseases, citrus leaf spot, caused by Alternaria alternata (Fr.) Keissl. (1912) and brown rot, caused by Phytophthora citrophthora (R.E. Sm. and E.H. Sm.) Leonian, (1906) as well as green and blue mold post-harvest disease, caused by Penicillium digitatum (Pers.) Sacc. and P. italicum Wehmer, (1894), respectively. Furthermore, it reviews the role of soluble silicon, Si nutrition in biotic stress mitigation and potential mitigation mechanisms. Previous studies on the use of Si fertilizers have focused on high accumulator Si crops. These have demonstrated the potential of Si to reduce the occurrence of biotic stresses, which takes place through both physical and biochemical mechanisms. However, few studies have demonstrated the potential of Si to mitigate biotic stress in citrus, or the mechanisms involved. There is a clear need for studies on the impact of Si on various stress biochemical pathways in plants generally, and specifically for citrus due to the huge loss caused by pre- and post-harvest pathogens. This will assist in deepening our understanding of the pathophysiology which is essential to develop resistant cultivars.

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