Alguém poderia me dizer quais os fatores que causam essas anomalias em cinórrodos de roseira?
Se puderem indicar artigos, desde já agradeço!
Obs: essas fotos pertencem a outras pessoas.
Google translated the questions as:
Could anyone tell me what factors cause these anomalies in rose bush cinronhodes?
If you can indicate articles, thank you!
Note: these photos belong to other people.
Welcome Gustavo! What you’re picturing is called “exogenous seeds”. Google explains it thusly:
Exogenous seeds in roses, appearing as red seeds exposed on top of the hip, are
often caused by the hip “bursting at the seams” due to overcrowding, frequently in open-pollinated or, rarely, damaged hips, and are sometimes exacerbated by sun scald
. This phenomenon is generally seen as a developmental quirk where the seed production exceeds the capacity of the container, rather than a disease.
Key Causes for Exogenous Rose Seeds
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Overcrowded Hips: The primary cause is when the rose hip produces too many seeds, forcing them to emerge from the top of the fruit.
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Open Pollination: This often happens with open-pollinated, rather than controlled cross-pollination.
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Environmental Factors: Sun scald may cause the exposed seeds to turn red.
Context for “Exogenous” in Rose Context
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Definition: In this specific context, it means “outside” of the seed pod (hip).
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Occurrence: It is common in various roses, especially in late-season hips, and often involves multiple seeds that are visible outside the fruit.
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What to do: These seeds are often still viable and can be used for planting
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I would never have guessed that. Wow, I love this site!
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Great! I’m glad you are enjoying it! There is a tremendous amount of really great information and knowledge here.
(Presumo que você tenha os meios para traduzir de volta para o português.)
Did you use a lot of fertilizers or chemicals on the plant prior to bloom?
The first photo looks almost like the exogenous seed head evolved from a proliferative bloom. Some cultivars are more prone to proliferation than others, and some fertilizers can stimulate such as I understand it.
(Do you folks know if such are normally fertile in roses? Would be a nice trick for maximizing the results of cross pollination efforts. 
)
(I assume it translates being Greek, but Exogenous –> exo- =outside and genius = born)
Aren’t those from a kind of wasp gall rather than just exogenous seeds?
Asking because I have encountered wasp gall forms on winter hikes abroad, they can give a similar look to exogenous seeds.
Examples below, although these hips are less fresh than Gustavo’s since the pics were taken in February.
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The first image may be something like a gall but the other three are exogenous seeds.
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Obrigado pela resposta!
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De nada! (You're welcome!)
São roseiras de uma colega, cultivo convencional, com uso eventual de algum fertilizante sintético. Os aquênios surgiram de polinização aberta.
“These are rose bushes belonging to a colleague, conventionally grown, with occasional use of synthetic fertilizer. The achenes resulted from open pollination”
The proliferation might then be cultivar related?