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Method for crossbreeding michelia compressa and michelia maudiae

A hybrid breeding and remote mountain technology, applied in botany equipment and methods, plant genetic improvement, agriculture, etc., can solve reproductive isolation and other problems, achieve the effect of increasing fruit setting rate, carpel seed setting rate, and increasing the success rate of hybridization

Pending Publication Date: 2022-05-17
INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention aims to solve the reproductive isolation phenomenon that may exist between Taiwan Michelle and Honghua Shenshan Michelia, create a new combination method of artificial hybridization, and provide a technical basis for cultivating new varieties of Magnoliaceae plants

Method used

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

Examples

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Effect test

Embodiment 1

[0024] 1. Selection of mother tree and pollen collection of Michelia safflower

[0025] Since Taiwan Michelle in Nanjing area bears the obvious phenomenon of large and small years, an excellent single plant with strong growth, health and no pests and diseases is selected as the female parent of hybridization. Safflower Shenshan Mixiao chooses fresh, healthy flowers with high pollen vitality to collect pollen. During the full flowering period in late February 2021, fresh flowers with open tepals were collected from the 10-year-old Michelia safflower tree, the tepals were manually removed, and the styles with stamens were placed on sulfuric acid paper. Store in a cool and ventilated place for 1-2 days. When the stamen chambers are opened and the pollen is scattered, clamp the flower stalk with tweezers, invert the style, place the style with the stamen group evenly on the sulfuric acid paper, gently tap the stamen group on the sulfuric acid paper until the pollen shakes off com...

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Abstract

The invention discloses a michelia compressa and michelia maudiae crossbreeding method, and belongs to the technical field of tree breeding. The method comprises the following steps: selecting 16-year-old michelia compressa as a female parent and 10-year-old michelia maudiae as a male parent; in the full-bloom stage, fresh flowers with opened flower quilt pieces are collected from the excellent michelia maudiae trees, the flower quilt pieces are removed, and pollen is scattered and collected after a medicine chamber of a stamen is opened; the method comprises the following steps of: performing pollination operation by taking flowers which are well developed, just exposed in flower cover pieces and not exposed in stigmas wrapped by the flower cover pieces of michelia compressa as pollination objects, and bagging after pollination; collecting follicles when the follicles start to crack and red or orange aril is exposed, naturally drying in the shade until the seeds with the aril are completely exposed, and washing off the aril to obtain clean hybrid seeds. According to the method, interspecific reproduction isolation is broken, a technical basis is provided for creating excellent new varieties, and compared with free pollination, the fruit setting rate and the heart and skin seed setting rate are increased, and the thousand seed weight of the seeds is low.

Description

technical field [0001] The invention belongs to the technical field of tree breeding, and in particular relates to a hybrid breeding method of Taiwanese Michelia (♀)×Safflower 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. 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 species of Mimilia cultivated in the same location, the cold resistance of Taiwan Michelia is better than that of Shenshan Mich...

Claims

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Application Information

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IPC IPC(8): A01H1/02
CPCA01H1/02A01H1/027
Inventor 殷云龙刘向东徐建华王芝权杨颖施钦宣磊殷明顾春笋
Owner INST OF BOTANY JIANGSU PROVINCE & CHINESE ACADEMY OF SCI
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