diseased scarlet runner bean seeds?

[johan]

Hi, when picking the last enorma beans that had gone to far to eat whole I noticed that many of the seeds had an orange tinge around or at the white oval dot where the bean connects to the pod.
Now after storage many have turned brown completly.

Anyone know if this is a specific disease?   

[hortusbrambonii]

Doesn't that brown just mean that the pods have been picked or died when they were a little bit too young, or that something went wrong with the drying process?

[Joseph Lofthouse]

Changing color after drying is common among beans and peas. I speculate that one or more of the colors is sensitive to oxygen. The browning/reddening is present to some degree or other in all the runner beans that people sent me.

[oxbowfarm]

I agree that this is not likely a disease. It looks more like a problem with the seed drying or possibly immature seed. Looks like you have enough saved seed to do a germ test, if you are worried.

[johan]

Some were immature and many shrunk in weird ways. I saved seed the year before and had then very little of this discoloration.

Due to increasingly wet summers there is a lot of media coverage on fungal infections on grains and much of the crop unfit as human food, so I felt a need to find out if this was something of the like, even though I while not eat any of these ones.

Thank you for the input.

[robertb]

I lost all my saved runner beans this year, but they were obviously rotting as they turned soft. I think that was down to endless damp. This sounds more subtle though; have you tried a germination test?