Method of cultivating tetraploid gingko

A tetraploid and ginkgo technology, applied in the field of ginkgo cultivation, can solve the problems of slow growth rate of ginkgo biloba, long polyploid breeding cycle, long sexual reproduction cycle, etc., and achieves fast growth speed, high yield, and expansion of germplasm resources. Effect

Active Publication Date: 2020-04-10
SHANXI AGRI UNIV
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Problems solved by technology

[0011] In summary, the existing problems in the prior art are: Ginkgo biloba grows slowly, and the sexual reproduction cycle is long, which is the main difficulty in cultivating new varieties through sexual methods. Th

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  • Method of cultivating tetraploid gingko
  • Method of cultivating tetraploid gingko
  • Method of cultivating tetraploid gingko

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[0030] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] Aiming at the problems existing in the prior art, the present invention provides a method for cultivating tetraploid ginkgo. The present invention will be described in detail below in conjunction with the accompanying drawings.

[0032] Such as figure 1 Shown, the method for cultivating tetraploid ginkgo that the embodiment of the present invention provides comprises the following steps:

[0033] S101, Ginkgo seeds harvested in autumn are treated by stratification for wintering.

[0034] S102, after the ginkgo seeds are sown and emerge in the next spring, when the cotyledons of the ginkgo seedlings are flattened an...

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Abstract

The invention belongs to the technical field of gingko cultivation and discloses a method of cultivating tetraploid gingko. The method of cultivating tetraploid gingko comprises the following steps ofoverwintering gingko seeds harvested in autumn after stratification; after the gingko seeds are sowed and emerge in spring in a next year, when cotyledons of gingko seedlings are flattened and the tips of true leaves are just exposed, smearing gingko stem tips by a 0.2% colchicines agar sol, wherein the lengths of the stem tips smeared by the colchicines agar sol are smaller than 0.3 cm; removinga solid gel after 12 hours, treating the stem tips once again, and carrying out continuous treatment for 6 times and totally for 72 hours; and obtaining a tetraploid gingko plant after cytological identification. The method can be used for obtaining the tetraploid gingko plant. The polyploid plant has a giant vegetative mass. The method can be used for enlarging germplasm resources of gingko andincreasing genetic diversity to cultivate novel varieties for polyploidy breeding of gingko. By means of polyploidy breeding, a novel gingko variety which is high in growing speed and high in yield can be cultivated.

Description

technical field [0001] The invention belongs to the technical field of ginkgo cultivation, in particular to a method for cultivating tetraploid ginkgo. Background technique [0002] At present, the closest prior art: Ginkgo biloba (Ginkgo biloba L.), also known as ginkgo, is called duck foot tree and gongsun tree in ancient times, belongs to the gymnosperm door, is the only living species of the genus Ginkgo in the Ginkgoaceae family, and is the oldest gymnosperm in the existing gymnosperms. The ancient relict plants are recognized as "living fossils" and are unique multi-purpose economic tree species in my country. [0003] Ginkgo is rich in nutrients, on the one hand it refers to the diversity of nutrients it contains. According to Shandong Academy of Medical Sciences analysis of 100 grams of fresh ginkgo (gingko seeds) kernels produced in Dancheng: 6.96 grams of protein, 1.18 grams of fat, 38.20 grams of sugar, 52 grams of water, 1.47 grams of ash, 1.88 mg of calcium, 2.7...

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Application Information

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IPC IPC(8): A01H1/08
CPCA01H1/08
Inventor 乔永刚李政张鑫瑞宋芸
Owner SHANXI AGRI UNIV
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