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April 27, 2016

Ginkgo grove - Blandy Experimental Farm Virginia

Ginkgo grove of the State Arboretum University of Virginia,
Blandy Experimental Farm.

The Arboretum writes:
"The Ginkgo grove is the result of  a scientific experiment.
Dr. Orland E. White, Blandy Experimental first Director, began collecting ginkgo
seeds in 1929 from a single “mother tree” on the University of Virginia Grounds in Charlottesville. After these seeds germinated, Dr. White’s students planted over 600 ginkgo saplings to determine the sex ratio of this tree. Most plants are both male and female, but like holly, persimmon, and other species, ginkgo is dioecious, meaning a tree is usually male or female, but not both. Dr. White hypothesized the sex ratio would be
1:1. He did not live long enough to find out if he was right, but of the 301 trees that survived to maturity and for which gender could be determined, 157 were female and 144 were male. Statistically speaking, this does not deviate significantly from1:1. "

Video (Blandy Farm starts 8:12)

Video by WVPTPublic TV & Media on YouTube.

Photo and enlargement: Virginia Arboretum on

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At 4/28/2016, Blogger Charles said...

From time to time the hypothesis arises that "There is a causative correlation between three-sided ginkgo seeds and the gender of the trees that grow from them".
I have access to a female ginkgo tree which produces a high percentage of three-sided ginkgo seeds. If someone would like to promulgate such an experiment, I will be happy to send them three-sided ginkgo seeds.

Charles E. Hunter 1


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