A kind of ornamental sunflower seed breeding method

Abstract

The invention discloses an ornamental sunflower elite seed breeding method, which comprises the steps of selecting single plants; selfing and isolating; after a plant laboratory test, extracting a little amount of seeds of finally selected single plants, and carrying out plant-to-row identification; storing a large number of seeds of the finally selected single plants for standby use; after plant-to-row identification, weeding out standby seeds of unhealthy single plants, and mixing and breeding the standby seeds of the single plants with consistent characters in excellent plant-to-row; then selecting the single plants from the plant-to-row with consistent characters, and circulating the operation to obtain the next batch of seeds. According to the method, ornamental sunflower elite seedswith high purity and consistent characters can be quickly and efficiently obtained, the seed reproduction process is shortened, the seed reproduction efficiency is improved, and the seed reproductioncost is saved.

Description

technical field [0001] The invention belongs to the technical field of breeding improved varieties of crops, and in particular relates to a method for breeding improved varieties of ornamental sunflowers. Background technique [0002] Sunflower (Helianthus anuus L.) is a plant of the genus Helianthus in the Compositae family. It originated in North America and was introduced into my country at the end of the 16th century or the beginning of the 17th century. For a long time, sunflower has been mainly used as oil crops and leisure food in my country. In recent years, with the development of the country's economy and the improvement of people's living standards, people have begun to pay more attention to the enjoyment of spiritual life. Sunflowers are loved by people for their many colors and enthusiastic flower patterns, and they are highly ornamental. Agriculture in coastal areas of Jiangsu The Scientific Research Institute complies with the requirements of agricultural sup...

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Problems solved by technology

[0003] Traditional crop breeding usually adopts the "three-field system", that is, the row field, the line field, and the original seed field, and the "two-plot system", that is, the line field and the original seed field to produce seeds, or the "single-plant self-crossing and mixed propagation" system. Method produces seed, and above-mentioned method is usually aimed at self-pollination plant and normal cross-pollination plant, because its outcross seed setting rate is low, it is easy to keep its purity by above-mentioned method

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