Segregations of astringent progenies from crosses between PCNA and PCA persimmons

General Fruit Growing
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Conclusion: Luo Tian Tian Shi most likely has 2 copies of the gene responsible for dominant PCNA phenotype. Progeny segregation does not conclusively prove this, but the numbers are most consistent with autoallohexaploid inheritance.

While not investigated, there is a small chance 2 or more genes are interacting in Chinese PCNA. I really don’t like the way they dismissed results in the cross of Luo Tian Tian Shi X Taishu.

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Has there been further research of value?