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Method for crossbreeding michelia compressa and michelia maudiae dunn

A hybrid breeding and remote mountain technology, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of limited popularization and application, unobvious characteristics of flower viewing, etc., and achieve the effect of increasing seed setting rate

Pending Publication Date: 2022-02-18
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the common Magnoliaceae tree species with large flowers and bright colors, Taiwan Michelia has smaller flowers and less obvious flower viewing characteristics, which limits the popularization and application of this tree species

Method used

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  • Method for crossbreeding michelia compressa and michelia maudiae dunn
  • Method for crossbreeding michelia compressa and michelia maudiae dunn
  • Method for crossbreeding michelia compressa and michelia maudiae dunn

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Embodiment 1

[0022] 1. Pollen harvesting and storage technology of Michelia miracosa in deep mountains

[0023] In February 2021, fresh flowers with tepals opened were collected from the 35-year-old Michelia Michelia tree in Shenshan, and the tepals were removed by hand, and the styles with stamens were placed on sulfuric acid paper, and placed in a cool and ventilated place for 1 -2 days. After the stamens are opened and the pollen is scattered, the style is inverted, the flower stalk is held with tweezers, the stamens are gently knocked on the sulfuric acid paper until the pollen is completely shaken off, the impurities are removed, and the pollen is collected in a clean glass tube (pollen The amount does not exceed 1 / 3 of the depth of the glass tube). Seal it with absorbent cotton, put the glass tube containing the pollen in a glass desiccator covered with color-changing silica gel at the bottom, and store it at 4°C for later use.

[0024] 2. Taiwan Michelle tree cultivation and hybri...

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Abstract

The invention discloses a method for crossbreeding michelia compressa and michelia maudiae dunn, and belongs to the technical field of tree breeding. The method comprises the following steps: (1) selecting michelia maudiae as male parents and michelia maudiae dunn as female parents; (2) collecting fresh flowers with opened flower quilt pieces from excellent michelia maudiae trees, removing the flower quilt pieces, placing styluses with stamen groups on a parchment paper, and collecting pollen after anther chambers of the stamens are opened and the pollen is scattered; (3) carrying out pollination operation by taking the michelia compressa flowers which are well developed, just exposed in flower quilt pieces and not exposed in stigmas wrapped by the flower quilt pieces as pollination objects, removing the flower quilt pieces and stamen groups, dipping pollen on the stigmas by using a writing brush, and bagging them after pollination; (4) when the polymerized follicles start to crack and the fruits turn red or orange-red, collecting the fruits, naturally drying in shade until the polymerized follicles completely crack, and then collecting seeds. According to the method, interspecific reproduction isolation is broken, hybrid seeds are obtained, and a technical basis is provided for cultivating new varieties of Magnoliaceae plants.

Description

technical field [0001] The invention belongs to the technical field of tree breeding, and in particular relates to a method for hybrid breeding of Taiwanese Michelia (♀)×Shenshan Michelia (♂). Background technique [0002] Taiwan Michelia compressa (Michelia compressa) is an aromatic evergreen broad-leaved tree of the genus Michelia in the family Magnoliaceae; the flower is fragrant, the color is light yellowish white, or near the base is light red, and it often blooms in early spring in February and March; aggregate follicles, carpels Free, the seeds are pink, and the fruiting period is October-November. Native to Taiwan, Japan and other mountainous areas, it is an excellent greening tree species with both flowers and leaves. Since the introduction, cultivation and domestication of the Institute of Botany, Chinese Academy of Sciences in Jiangsu Province in 1982, it has been promoted and succeeded in northern Jiangsu. Qi Baiyan et al. (2010) showed that compared with other...

Claims

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Application Information

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IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 殷云龙刘向东徐建华王芝权王紫阳於朝广
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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