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Method for breeding azalea clonal cultivar

A rhododendron and clone technology, which is applied in the breeding field of rhododendron clone varieties, can solve the problem of low probability of natural bud mutation, and achieve the effects of high ornamental value, excellent characters, and high mutation probability

Inactive Publication Date: 2012-07-18
ZHEJIANG WANLI UNIV
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Problems solved by technology

[0003] Rhododendron in nature is easy to produce bud mutation. At present, some excellent varieties in cultivation are successfully selected and bred by natural bud mutation, but the probability of natural bud mutation is low. Using artificial mutation can greatly increase the mutation probability of Rhododendron. It is an excellent variety of Rhododendron in breeding. However, there are few reports on the method of using artificial mutation to breed Rhododendron

Method used

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Embodiment

[0023] EXAMPLES Taking the variety "Saoyue" as an example, "Saoyue" Rhododendron is native to Japan and is widely cultivated in my country. The female parent of "Saoyue" has a bright red corolla, a wide funnel shape, and light red filaments. Artificial mutagenesis is used Individual plants with excellent variation in flower color and flowering period can be successfully selected and bred.

[0024] (1) Determination of breeding goals: the main breeding goals are higher ornamental value (such as different flower types, flower colors, earlier flowering, etc.);

[0025] (2) Selection of breeding materials: select varieties (lines) with high ornamental value, strong growth and plants that have entered the blooming stage as mother plants. Generally, when the fruit peel of the mother plant turns brown or yellowish brown in autumn or spring It can be collected; in Zhejiang Province, it is generally collected before the capsules crack in early spring. After the seeds are collected, choo...

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Abstract

The invention discloses a method for breeding an azalea clonal cultivar. The method is characterized in that: azalea eminent trees with high ornamental value and an early flowering period are obtained in a manual physical mutation mode. The method comprises the following steps of: determining a breeding objective; collecting plump and mature seeds; performing physical mutation by using 50 to 250Gy of 60Co gamma rays in the dosage rate of 10Gy / min; sowing the seeds; cultivating nursery-grown plants for 3 to 6 years; selecting single plants, namely selecting in the aspect of the observation of biology, botanical characters, ornamental features and the like; analyzing genes with mutated characters; performing regional test on the eminent trees; summarizing cultivating measures; and popularizing. The eminent trees obtained by the method have a flowering period which can be advanced by 5 to 15 days commonly, can be white, red and white, red and the like, have polyphyll and are high in stress resistance.

Description

technical field [0001] The invention relates to the technical field of tree breeding, in particular to a breeding method for obtaining an excellent clone variety of rhododendrons, that is, a clone variety of rhododendrons, by means of modern biological technology (physical mutagenesis). Background technique [0002] Rhododendron simsii Planch, referred to as Rhododendron simsii Planch, also known as Rhododendron simsii Planch. Rhododendron is an excellent flower viewing plant in my country, with various varieties, rich colors and different shapes. In view of the biological characteristics of rhododendron itself, it has high ornamental and garden application value. At present, domestic and foreign breeding methods for fine varieties of rhododendron are mainly to introduce and domesticate wild resources, and hybridize with cultivated varieties to breed new varieties. However, this method is relatively complicated and the probability of success in obtaining superior varieties ...

Claims

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Application Information

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IPC IPC(8): A01H1/06
Inventor 吴月燕王忠华李波
Owner ZHEJIANG WANLI UNIV
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