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Other Plants Discussion of all other types of plants besides bananas.


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Old 02-05-2014, 02:00 PM   #1 (permalink)
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Joy Seed germination

One year old P.edulis seed germinate in 6 days


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Old 02-09-2014, 09:18 PM   #2 (permalink)
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Wink Re: Seed germination

Oldest viable seed

There are several candidates for the oldest viable seed:

Carbon dated

The oldest carbon-14-dated seed that has grown into a viable plant was Silene stenophylla (narrow-leafed campion), an Arctic flower native to Siberia. Radiocarbon dating has confirmed an age of 31,800 300 years for the seeds. In 2007, more than 600,000 frozen mature and immature seeds were found buried in 70 squirrel hibernation burrows 38 metres (125 ft) below the permafrost near the banks of the Kolyma River. Believed to have been buried by Arctic ground squirrels, the mature seeds had been damaged to prevent germination in the burrow, however, three of the immature seeds contained viable embryos. Scientists extracted the embryos and successfully germinated plants in vitro which grew, flowered and created viable seeds of their own. The shape of the flowers differed from that of modern S. stenophylla with the petals being longer and more widely spaced than modern versions of the plant. Seeds produced by the regenerated plants germinated at a 100% success rate, compared with 90% for modern plants. Calculations of the γ radiation dose accumulated by the seeds since burial gave a reading of 0.07 kGy, the highest maximal dose recorded for seeds that have remained viable.

The oldest mature seed that has grown into a viable plant was a Judean date palm seed about 2,000 years old, recovered from excavations at Herod the Great's palace on Masada in Israel. It was germinated in 2005. (For more details refer to Judean date palm: Germination of 2000-year-old seed).

The third oldest viable seed recorded is the carbon-14-dated 1,300-year-old sacred lotus (Nelumbo nucifera), recovered from a dry lakebed in northeastern China in 1995.




The only example of a Judean Date Palm located at Kibbutz Ketura, Israel. It was germinated in 2005 from a 2000 year-old seed found in the Masada excavations, and is nicknamed "Methuselah".

Oldest viable seed - Wikipedia, the free encyclopedia



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Old 02-10-2014, 11:02 AM   #3 (permalink)
 
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Default Re: Seed germination

I don't say that seed goes past the sell by date but I suppose the quality could be compromised by age with some seed,

Having said that with Kew's Millienium Seed Bank then I am at times confused with some opinions on this. The seeds will be with Kew for years to come they are safeguarded for when 'a' certain seed dies through extinction.

Thats what Kew wanted to do for the only tiny Waterlily in the whole world but some swine stole it.

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