The perceived "seeds" on strawberries, called achenes, can appear larger on some strawberries due to variations in the strawberry variety or growing conditions. These aren't actually seeds in the traditional sense, but rather the fruit containing a seed.
What are Achenes?
The small, seed-like structures on the outside of a strawberry are technically called achenes. Each achene is actually a single-seeded fruit. What we typically consider the "fleshy" part of the strawberry is derived from the receptacle of the flower, rather than the ovary.
Why Size Variations Occur
Several factors contribute to differences in achene size:
- Strawberry Variety: Different strawberry varieties have naturally different sizes of achenes. Some are bred for larger or more prominent achenes.
- Growing Conditions: Environmental factors such as sunlight, water availability, and nutrient levels can influence achene development. Optimal conditions generally lead to healthier and potentially larger achenes. Conversely, stress or nutrient deficiencies can affect achene size.
- Pollination: Successful pollination is crucial for achene development. If pollination is incomplete, the achenes may not develop properly, potentially appearing smaller or more shrunken.
- Hormonal Influences: The plant hormone auxin, produced by the achenes, stimulates the growth of the receptacle (the red, fleshy part of the strawberry). Larger or more numerous achenes may result in a larger overall strawberry. Conversely, if the achenes don't produce enough auxin, the receptacle might be stunted, making the achenes appear relatively larger.
- Genetics: Like any other trait, achene size can vary due to genetic factors. Some strawberry plants may simply have genes that predispose them to produce larger achenes.
Are Strawberries Grown From Achenes?
Interestingly, most commercial strawberry plants are not grown from the "seeds" (achenes). They are typically propagated vegetatively through runners or tissue culture to maintain consistent traits. While you can grow strawberries from achenes, it's not common commercially because the resulting plants may not be true to type (i.e., they may not have the same characteristics as the parent plant).
Conclusion
The size of the achenes on a strawberry varies due to a complex interplay of genetic, environmental, and hormonal factors. The perceived "seeds" being larger on some strawberries is typically due to the natural variability within different strawberry varieties and their growing conditions, and not necessarily an indication of something negative.
