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Method for improving eggplant hybrid seed production purity

A technology of hybrid seed production and eggplant, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of unstable yield, low purity, and difficulty in ensuring that the quality of seeds meets national standards, and achieves the guarantee system The effect of improving seed yield, reducing production cost, and solving difficult problems in seed production

Inactive Publication Date: 2017-08-04
杨化
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But eggplant is a self-pollinated or often cross-pollinated crop, and the natural hybridization rate is 5% to 7%, and the highest reaches more than 10%. In the process of hybrid seed production, there are generally problems of low purity and unstable yield, especially in Breeding parents and first-generation hybrid seeds without isolation conditions is difficult to ensure that the quality of the seeds meets the national standard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Seed Production of Dali Keza 4 (Purple Chang Eggplant)

[0033] (1) Parental breeding

[0034] Choose to tie the large flower buds of the father and mother that are open on the second day with wool as marks, then use a needle or toothpick to pick the petals, pierce the anthers, flick them a few times with your fingers, and then cover them with a layer of cotton paper-thick medical absorbent cotton. Can. Measured father, female parent seed purity reaches 99.9%, male parent (M 04 ) The number of seeds in a single fruit is 620, the thousand-grain weight of seeds is 4.707g, and each 667m 2 Seed yield 25.91kg; female parent (B 04 ) The number of seeds in a single fruit is 1084, the thousand-grain weight of seeds is 3.093g, and each 667m 2 The seed yield is 29.77kg.

[0035] (2) Determination of the combining ability of the hybrid combination

[0036] Systematic observation and record of parental traits and hybridization F 0 ~F 1 representative table, in which the emp...

Embodiment 2

[0062] Seed production of Dali Keza No. 6 (purple long eggplant, approved by the Yunnan Provincial Non-main Crop Variety Approval Committee in 2013)

[0063] (1) Parental breeding

[0064] Choose to tie the large flower buds of the parent and mother that are open on the second day to mark with wool, and then cover the flower buds with a layer of cotton paper thick medical absorbent cotton, and flick them a few times with your fingers within 1 to 2 days after flowering. The purity of the seeds of the male and female parents was measured to reach 99.9%. The number of single fruit seeds of the male parent (K04) was 658, and the thousand-grain weight of the seeds was 4.443g. 2 Seed yield 25.90kg; female parent (B04) single fruit number 1084, seed weight 3.093g, per 667m 2 The seed yield is 29.77kg.

[0065] (2) Determination of the combining ability of the hybrid combination

[0066] Systematically observe and record the characteristics of the parents and the performance of the...

Embodiment 3

[0092] Seed Production of Dali Eggplant×Meizhou Eggplant (Mogga)

[0093] (1) Parental breeding

[0094] Choose to tie the large flower buds of the parent and mother that are open on the second day to mark with wool, and then cover the flower buds with a layer of cotton paper thick medical absorbent cotton, and flick them a few times with your fingers within 1 to 2 days after flowering. Measured father, female parent seed purity reaches 99.9%, male parent (MZ 10 ) The number of seeds in a single fruit is 529, the thousand-grain weight of seeds is 4.240g, and each 667m 2 Seed yield 18.39kg; female parent (DL 10 ) The number of seeds in a single fruit is 721, the thousand-grain weight of seeds is 3.660g, and each 667m 2 The seed yield is 21.64kg.

[0095] (2) Determination of the combining ability of the hybrid combination

[0096] Systematic observation and record of parental traits and hybridization F 0 ~F 1 representative table, in which the emphasis is on the quality ...

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Abstract

The invention discloses a method for improving the eggplant hybrid seed production purity. The method comprises the following steps: covering buds with absorbent cotton to carry out isolation breeding of parents in order to make the purity of the parents reach the requirements of stock seeds; determining the combining ability of a hybrid combination to facilitate the selection of an excellent combination with high fruit setting rate and high quantity of seeds per fruit; determining the seed production period to provide best climate conditions for emasculation pollination; reasonably closely planting seedlings, and determining a suitable planting density and a planting proportion according to the plant heights of the male and female parents in order to ensure the seed production output and benefit; adjusting parent plants: adjusting the male parent plants to facilitate the obtaining of sufficient pollen, and adjusting the male parent plants to facilitate the determination of the best seed production position and the hybridization capacity and increase the quantity of the seeds per fruit; and picking and drying anthers, and preparing and storing pollens to ensure the obtaining the pollens with high quality and strong vitality. The method has the advantages of one-shot completion emasculation, pollination, bud covering and marking, reduction of the production cost, avoiding of out-crossing of honeybees and other insects, and breaking of the seed production difficulties of high outcrossing rate and low purity.

Description

technical field [0001] The invention relates to the field of plant breeding, in particular to a method for improving the purity of eggplant hybrid seed production. Background technique [0002] Eggplant has obvious heterosis, and the first-generation hybrid seeds are generally used in production. Artificial hybrid seed production is a suitable method for the production of eggplant hybrids. After retrieving technical literature on eggplant hybrid seed production and Liaoning and Anhui eggplant hybrid seed production technical regulations, it was found that the core technology of eggplant hybrid seed production is basically the same, that is, the separation distance between parents and between parents and other varieties is not less than 200m, and the flowering 1 to 3 days before detasseling, pollination on the day of flowering or the next day, repeat pollination the next day after pollination. But eggplant is a self-pollinated or often cross-pollinated crop, and the natural...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01G1/00
CPCA01H1/02
Inventor 杨化张亚春陈国发高寿梅李树锋朱炫
Owner 杨化
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