Reproductive isolation control method for cycadopsida

A technology of reproductive isolation and control methods, applied in the field of reproductive isolation control of cycads, can solve problems such as concerns about wild distribution status

Inactive Publication Date: 2009-08-12
SHENZHEN XIANHU BOTANICAL GARDEN ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the current wild distribution of cycads is mostly worrying

Method used

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  • Reproductive isolation control method for cycadopsida
  • Reproductive isolation control method for cycadopsida
  • Reproductive isolation control method for cycadopsida

Examples

Experimental program
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Embodiment 1

[0018] Cycas fairylakea (Cycas fairylakea) in Cycadaceae was used for artificial pollination by dry pollination. The megasporophyll and microsporophyll of Xianhu cycas are both cone-shaped. Concrete steps are as follows, 1) collect pollen, turn from light yellow to bright yellow before Xianhu cycad male cones bloom, and when most of the microsporophylls are opened, the whole male cones are picked from the base bulbs, and spread below Put a piece of white paper, and then gently pat the top of the male cones. After the mature pollen basically falls naturally, place the male cones upright on the white paper for collecting pollen with the base facing down, and wait for post-ripening. Since the male and female flowering periods of cycad plants are mostly different, about a week or so, for the pollen that cannot be pollinated temporarily, collect it and put it into a small bottle, and put it in the refrigerator at 4°C for later use. It is generally not suitable to store for more th...

Embodiment 2

[0020] Artificial pollination was carried out by wet pollination using Zamia furfuracea from Zemaceae. Both the megasporophyll and microsporophyll of Rhizoma chinensis are coniferous. The specific steps are as follows, 1) collect pollen, turn from brown yellow to brown before the male cones of Rhizoma chinensis are opened, and when most of the microspore leaves are opened, the whole male cones are picked from the base bulb and laid below A piece of white paper, and then gently pat the upper part of the male cones. After the mature pollen basically falls naturally, place the male cones upright on the white paper that collects the pollen with the base facing down, and wait for post-ripening. 2) Determine the pollination time. When the female cones of L. chinensis Zemi start to crack horizontally from the top, it indicates that the female cones have matured and can be artificially pollinated. 3) Artificial pollination by wet pollination method, put the pollen into clean water at...

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Abstract

The invention relates to the field of protection of plant germplasm resources, and provides a method for controlling reproductive isolation of cycad plants. The method comprises the following steps: determining the pollen collection time; collecting pollen; determining the pollination time; artificial pollination. Artificial pollination by using the phenomenon of "late ripening" and "specific pollination" of cycads can effectively control the promiscuity among cycads, solve the problem of species mixing in centralized conservation, and improve the seed setting rate of cycads.

Description

technical field [0001] The invention relates to the field of protection of plant germplasm resources, in particular to a method for controlling reproductive isolation of cycad plants. Background technique [0002] Cycad plants are plants in the age of dinosaurs, precious "living fossil" plants, and the oldest existing seed plants. The sum total of cycads in the world is no more than 300 species, subspecies or varieties. Cycad plants mainly have the following three important values: first, scientific value, cycad plants are the oldest seed plants in existence, and their origin can be traced back to the Late Carboniferous period 300 million years ago. In about 30 million years from 160 to 190 million years ago, cycads, together with all kinds of dinosaurs, dominated the earth. It can be said that cycads have witnessed the rise and fall of almost all seed plants in the world, and they are veritable "living fossils", living specimens and witnesses. The study of cycads can not...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H5/00A01H1/00
Inventor 李楠李勇刘芳齐陈涛方水姣蒋明
Owner SHENZHEN XIANHU BOTANICAL GARDEN ADMINISTRATION
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