Impact of Storage Fungi on Soybean Seed Deterioration in Different Storage Conditions and Seed Moisture Content

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Sheidaei Saman; HAMIDI AIDIN; SADEGHI HOSSEIN; OSKOUEI BITA; ZARE LEILA

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Journal: IRANIAN JOURNAL OF SEED RESEARCH Year:2019 | Volume:6 | Issue:1 Page(s): 65-76

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Title

Impact of Storage Fungi on Soybean Seed Deterioration in Different Storage Conditions and Seed Moisture Content

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Keywords

Germination percentQ1

Seed proteinQ2

Soluble sugarQ2

Storage fungiQ1

Abstract

Introduction: Understanding the complex characteristics that control the life span of the seed has ecological, agricultural and economic importance. Inappropriate storage conditions after harvesting destroy a large part of annual yield partly due to microbial activity in the storage. Damage from Storage fungi varies based on the climatic conditions, crops and storage facilities. This study was carried out to investigate the effect of storage conditions and initial seed moisture content on the growth of Storage fungi and also the relationship between the degree of contamination with fungi and the quality and biochemical changes of the seeds. Materials and Methods: The present study was carried out as a factorial experiment based on a completely randomized design to assess the impact of Storage fungi on soybean seed deterioration at different storage conditions. The treatment included three degrees of initial seed moisture content including low moisture content (10%), medium moisture content (12%) and high moisture content (14%) as the first factor. Moreover, two storage conditions including the seed storage in Moghan and controlled seed storage in Seed and Plant Certification and Registration Institute were considered as the second factor. Soybean seeds of Williams's cultivar were investigated for the infection of Aspergillus flavus, Aspergillus niger, Fusarium and Penicillium fungi and also related biochemical traits and seed quality such as Germination percent, seedling vigor index, Soluble sugar and total protein. Results: The results of this experiment showed that the increase of the seed moisture content by 14% can significantly decrease the seed quality. Therefore, the seed moisture content of 14% was identified as unsuitable moisture for the storage of soybean seeds. In addition, the infection with Storage fungi has a direct relationship with the degree of seed moisture and seeds with high moisture content are rapidly attacked by the Storage fungi which can decrease seed quality and viability. Moreover, the Aspergillus niger infection increased from 27. 5 to 43. 75 and the Germination percent decreased from 52. 5 to 23 percent in seeds with a moisture content of 14% in Moghan storage, as compared with the controlled storage. Furthermore, this study showed that when the percentage of Storage fungi increases, the soybean seed deterioration increases. Studying the biochemical changes of deteriorated seeds during the storage showed that as the aging of the seeds increases, Soluble sugars and protein percentage decrease. The amounts of Soluble sugars and total protein of the seed were significantly lower in seeds maintained under unsuitable conditions. Furthermore, the content of Soluble sugars and total protein decreased significantly by the increase of the seed moisture, which resulted in the increase in seed deterioration. Conclusions: Based on the obtained results, initial seed moisture and storage conditions are two important determinants of fungi infestation during storage, which can affect the content of Soluble sugars and total protein causing seed deterioration, seed vigor and viability. It can be concluded that the soybean seed moisture content of 12%, which is the standard moisture content of soybean seed production in Iran, is regarded as suitable moisture for seed storage.

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APA: Copy

Sheidaei, Saman, HAMIDI, AIDIN, SADEGHI, HOSSEIN, OSKOUEI, BITA, & ZARE, LEILA. (2019). Impact of Storage Fungi on Soybean Seed Deterioration in Different Storage Conditions and Seed Moisture Content. IRANIAN JOURNAL OF SEED RESEARCH, 6(1 ), 65-76. SID. https://sid.ir/paper/366011/en

Vancouver: Copy

Sheidaei Saman, HAMIDI AIDIN, SADEGHI HOSSEIN, OSKOUEI BITA, ZARE LEILA. Impact of Storage Fungi on Soybean Seed Deterioration in Different Storage Conditions and Seed Moisture Content. IRANIAN JOURNAL OF SEED RESEARCH[Internet]. 2019;6(1 ):65-76. Available from: https://sid.ir/paper/366011/en

IEEE: Copy

Saman Sheidaei, AIDIN HAMIDI, HOSSEIN SADEGHI, BITA OSKOUEI, and LEILA ZARE, “Impact of Storage Fungi on Soybean Seed Deterioration in Different Storage Conditions and Seed Moisture Content,” IRANIAN JOURNAL OF SEED RESEARCH, vol. 6, no. 1 , pp. 65–76, 2019, [Online]. Available: https://sid.ir/paper/366011/en

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