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Difficult seed profiles

These species were identified by participants at Kew's 'Difficult' Seeds Project workshops as showing poor germination during initial testing and/or during re-tests after storage. Low germination may be due to inherent issues such as seed storage behaviour, dormancy or seed longevity, or handling and storage difficulties.

To share information on 'difficult' seeds and send your images to improve our resource, email us at difficultseeds@kew.org.

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Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Send us an image of this species

Why are the seeds of this species difficult? This species may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome with a pre-chill treatment. The storage behaviour of this species in unknown.

Why are the seeds of this species difficult? Inhibitors in the fruit pulp will prevent germination if the seeds are not extracted. If the seeds have not been properly dried and stored under optimal conditions, storage life and viability will be reduced.

Why are the seeds of this species difficult? Inhibitors in the fruit pulp will prevent germination if the seeds are not extracted. If the seeds have not been properly dried and stored under optimal conditions, storage life and viability will be reduced.

Why are the seeds of this species difficult? Germination is aided by removing the covering structures of the seed and chipping the seed coat. The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Why are the seeds of this species difficult? The seeds may have both physical and physiological dormancy. For germination to occur, both types of dormancy may need to be broken.

Send us an image of this species

Why are the seeds of this species difficult? The seeds have physical dormancy, which can be overcome by scarifying the seed coat to allow water uptake and encourage germination.

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Send us an image of this species

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Send us an image of this species

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Why are the seeds of this species difficult? Some species of the Poaceae family can produce a high proportion of empty seeds, which collectors and curators must take account of. The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Why are the seeds of this species difficult? The seeds have physical dormancy, which can be overcome by scarifying the seed coat to allow water uptake and encourage germination.

Send us an image of this species

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Send us an image of this species

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Send us an image of this species

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome by mimicking the seasonal patterns of the species' native habitat.

Why are the seeds of this species difficult? The seeds may have physiological dormancy, which can be overcome with a pre-chill treatment. Wild-growing sub-species may produce a high proportion of empty seeds, which collectors and curators must take account of.

These species were identified by participants at Kew's 'Difficult' Seeds Project workshops as showing poor germination during initial testing and/or during re-tests after storage. Low germination may be due to inherent issues such as seed storage behaviour, dormancy or seed longevity, or to handling and storage difficulties. Follow the links for information about germination requirements and storage behaviour that can help overcome these difficulties.

Showing 121 - 140 of 163 results

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