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Investigating the persistance of the wild rye seed bank: a case study of Shahkoh region, Golestan province
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Hadi Mohammadi   , Asieh Siahmarguee * , Farshid Ghaderi Far , Ebrahim Zeinali , Javid Gherekhloo |
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Abstract: (41 Views) |
Introduction: The use of self-consumed wheat seeds, which are contaminated with wild rye seeds, is common in the fields of Shahkoh region (southern highlands of Golestan province). Wild rye seeds mature before wheat, and for this reason, they easily enter the soil seed bank and maintain their survival in the fields. Considering that the most important source of weed presence is their seed bank in the soil, investigating the fate of different types of weed seeds in the soil is very important and can be useful in designing management programs.
Materials and methods: The seeds of wild rye and common wheat cultivars in the region (Alvand and Omid) were collected from different fields and buried at the depths of 10 and 20 cm in two conditions of bare soil (natural conditions) and covered soil (dry conditions). Sampling of buried seeds was done over time and at each stage, the percentage of germinated seeds in the soil, germinated in the laboratory and the percentage of dead seeds were measured.
Results: The results showed that all the seeds buried in the natural conditions of the region (uncovered soil) germinated after the first autumn rain. Seeds buried in covered soil (dry conditions) did not germinate in soil, but after transfer to the laboratory, all live seeds germinated. The germination ability of seeds buried in coated soil decreased with the passage of time and the mortality of seeds increased due to the contamination of seeds with fungal pathogens, especially Penicillium genus.
Conclusion: Therefore, wild rye seeds do not have dormancy and their seed bank is not stable in the soil. It seems that the long-term presence of the seeds of this weed in the soil is possible only in dry conditions. Therefore, the use of certified wheat seeds is the most effective way to reduce the damage caused by this weed in the mentioned area. |
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| Keywords: Certified seed, Soil seed bank, Dormancy, Fate of seed |
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Full-Text [PDF 594 kb]
(16 Downloads)
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Type of Study: Research |
Subject:
Ecophysiology
Received: 2025/12/29 | Accepted: 2024/10/21 | Published: 2024/10/21
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