Breeding method for early-maturing hybrid broccoli in additive selection

A broccoli, early-maturing technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of accelerating the hybrid breeding of broccoli, lack, and long time, and achieve good flowering and fruiting traits, high seed yield, The effect of low cost of seed production

Active Publication Date: 2012-12-26
YUNNAN SINONG VEGETABLES SEED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because broccoli is a biennial vegetable, under normal circumstances, it blooms once a year, that is, it can only be bred or self-bred and purified once a year.

Method used

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  • Breeding method for early-maturing hybrid broccoli in additive selection
  • Breeding method for early-maturing hybrid broccoli in additive selection
  • Breeding method for early-maturing hybrid broccoli in additive selection

Examples

Experimental program
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Embodiment 1

[0018] The breeding process of this embodiment is as follows: figure 1 shown.

[0019] The present embodiment carries out breeding according to the following methods:

[0020] Step 1. One piece of broccoli male sterile material (CMS034) was introduced from Japan as the female parent. After field observation and identification, it was found that the seedlings of this material did not turn yellow at low temperature, the flowers bloomed normally during the reproductive growth period, and the stamens were all degenerated. The pistil is normal, the nectaries are large, and the nectar is abundant. After the field identification, the excellent individual plants were selected and planted in the greenhouse for overwintering. In the spring of the next year, they were crossed with the male parent, which is an excellent and stable broccoli self-compatibility line 05122 and 06149. After opening and exposing the stigma, take fresh pollen from two excellent self-compatibility lines of broc...

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Abstract

The invention relates to a breeding method for a plant, in particular to a breeding method for broccoli, belonging to the technical field of plant cultivation. The breeding method comprises the following steps of: performing continuous selfing and directional selection for at least five generations through collected broccoli material to obtain a self compatible line of the broccoli to serve as a transformation male parent to be hybridized with a cytoplasmic male sterile material; breeding a cytoplasmic male sterile line with superior comprehensive performance and stable genetic character through backcross transformation of five generations; then hybridizing the cytoplasmic male sterile line with stable genetic character with the superior self compatible line of the broccoli; and performing field repeated identification and screening to obtain superior hybridized combined variety. According to the method, an optimal growth and development environment for the broccoli is created though low-temperature treatment of seeds in coordination with related facilities and equipment; double blossom and seed setting are realized in one year; the breeding progress can be quickened; and the seed quality is improved.

Description

technical field [0001] The invention relates to a plant breeding method, in particular to a broccoli breeding method, and belongs to the technical field of plant cultivation. Background technique [0002] Broccoli is a variety of Brassica oleracea in the family Brassicaceae. It is a biennial herb with the scientific name Brassica oleracea L.var.italica planch. It is evolved from cabbage and is native to the Mediterranean region. Broccoli forms a green and fat flower ball on the top of the main stem, and the small flower buds on the surface are obvious. The tender stems of the flower buds are collected for food, because they are rich in vitamins A, B, C, E, protein, anthocyanins, minerals, etc. Nutritional ingredients, more vitamin C, higher than Chinese cabbage, tomato, celery, crisp and tender meat, sweet flavor, rich nutrition, excellent taste, recommended by "Time" magazine as the fourth in the top ten healthy foods. Since the early 1980s, my country began to introduce s...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 秦文斌戴忠良吴国平毛忠良潘跃平姚悦梅潘永飞张振超王建华孙春青陈智超肖燕刘小凤
Owner YUNNAN SINONG VEGETABLES SEED
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