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Method for quickly breeding new variety of papaya

A technology of papaya and new varieties, applied in the field of rapid selection and breeding of new papaya varieties, can solve the problem that excellent new varieties cannot be quickly popularized and applied, are not suitable for root growth of papaya tissue culture seedlings, and affect the application of tissue culture factory seedling raising technology and other issues, to achieve the effects of standardized production, consistent traits, and increased output value

Inactive Publication Date: 2009-06-24
广州市果树科学研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, papaya tissue culture seedlings to be planted in February to March need to be transplanted in December to January, and the low temperature climate during this period is not suitable for the growth of papaya tissue culture seedling roots. As a result, the survival rate of transplanting is very low, which seriously affects the application of tissue culture industrial seedling raising technology in production, and makes the excellent new varieties selected and bred unable to be popularized and applied quickly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Breeding of the new variety "Hongfei No. 11"

[0036] The size and shape of "Hongfei" papaya fruits vary greatly among individuals, and most plants have intermittent fruiting, which directly affects the output value. The yield per mu of "Hongfei" papaya is about 3,000 kilograms. For this reason, we improved the "Hongfei" papaya variety and bred a new line "Hongfei No. 11".

[0037] Since 2002, we have used the method mentioned in this patent to select and breed new varieties

[0038] (1) Method for selecting individual plants with excellent traits: from the "Hongfei" papaya plants planted in the field in October 2002, select hermaphrodite plants with excellent fruit-setting traits as individual plants.

[0039] (2) Tissue culture rapid seedling raising method:

[0040] a. On October 25, the lateral buds of the above-mentioned individual plants were taken as explants, and asexual propagation was carried out according to the method disclosed in the CN1481674A...

Embodiment 2

[0058] Embodiment 2: Breeding of new variety "Red Sun" papaya

[0059] In recent years, with the expansion of the sales market of papaya fruit in the northern region, distributors have put forward higher requirements for the storage and transportation resistance of the fruit. Although the imported papaya varieties such as "Risheng" and "Hawaii" are of good quality, they are not suitable for planting in Guangzhou due to their late maturity and disease resistance. In February 2002, we planted the actual seedlings in the field for field selection. In October 2003, we screened out individual plants with relatively early maturity, good quality, good fruit-setting traits, and fruit storage and transportation. In November, the lateral buds were taken as explants for tissue culture and vegetative propagation. In September 2004, tissue culture bottle seedlings were produced. According to the technical process described in the "rapid seedling raising method" in this patent, the tissue ...

Embodiment 3

[0064] Embodiment 3: Breeding of new variety "Hongling" papaya

[0065] Although the "Malay Red" variety papaya imported from abroad has red flesh and is more popular with consumers, its late maturity, low yield and poor disease resistance affect the planting efficiency. In the summer of 2001, we used the adult papaya plants of "Malaihong" and "Suizhonghong" as the father and mother to carry out hybridization experiments. At the end of February 2002, the seedlings of the above-mentioned first generation of hybrids were planted in the field. In November 2002, "Suizhonghong" was selected from them, which had the characteristics of early maturity, disease resistance and high yield, and "Malayhong" with short plants and fleshy fruits. A single plant (No. MS-06) with red and other advantages was used as the mother plant. In December, the lateral buds were taken as explants for tissue culture and vegetative propagation. In September 2003, tissue culture bottle seedlings were produc...

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PUM

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Abstract

The invention discloses a method for rapid selection and breeding of new papaya varieties, relating to a method for rapid selection and breeding of new plant varieties. Complete by the following four procedures: (1) select good papaya varieties as father and mother to carry out hybridization, get a single plant with good traits in the hybrid offspring, or select a mutant single plant with good traits in field planting; (2) group Cultivate rapid seedlings, wash the base medium of the bottle seedlings with clean water, then dip the base of the bottle seedlings in the paste yellow mud containing indole butyric acid, and implant the computer-controlled temperature and humidity, and lay the ground heating wires. Controlling seedbed training; (3) field demonstration test; (4) selecting a single plant that can stably inherit excellent traits as the mother plant of the new variety, and carrying out tissue culture industrial seedling cultivation. The method shortens the breeding time of new papaya varieties to 3 to 5 years; can timely select and breed new varieties that adapt to the natural environment conditions of the production place, so that the new varieties have market competitiveness; it is beneficial to the standardized production of papaya, and It can increase the output value per unit area.

Description

technical field [0001] The invention relates to the improvement of a rapid breeding method for new plant varieties, in particular to a rapid breeding method for new papaya varieties. Background technique [0002] Papaya (Carica papaya L.) is a fruit tree widely cultivated in tropical and subtropical regions. It has the advantages of fast growth, early results, high yield and good quality. It is the fourth best-selling fruit in the world. Papaya has a wide range of uses, and the whole plant can be used, especially it is rich in papain, papaya rennet, and papain. Economic integration promotes the development of papaya production in the direction of large-scale and commercialization. Therefore, in the ever-changing market, the rapid acquisition of high-quality new varieties is the key to maintaining market competitiveness. [0003] Papaya is a herbaceous fruit tree that is propagated by seeds. New varieties are often cultivated by methods such as hybridization and field select...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H4/00
Inventor 林冠雄游恺哲陈健李卫红周常清原耀林
Owner 广州市果树科学研究所