Crossbreeding method of peach breed with nonshowy flowers

Abstract

The invention discloses a crossbreeding method of a peach breed with nonshowy flowers. The method comprises the steps as follows: male parent pollen collection, female parent selection, female parent flower pretreatment, female parent flower castration, pollination, seed collection, treatment, individual hybrid planting, trimming and identification and evaluation for fruiting characters. According to the method, different treatment methods are adopted for male parents with different flowering phases of parents, the method is suitable for crossbreeding of flowers in all flowering phases, and influence caused by flowering asynchronism is avoided; aiming at characteristics of the nonshowy flowers, styles are protected by bags at the early development stage of the flowers, so that the flowers are prevented from being pollinated by other breeds, and low-temperature freezing damage in the spring is prevented; a rubber hose is taken as a contact head, so that the cost is low, one-time use is realized, cross contamination is avoided, and bruising of stigma caused by pollination can be relieved; different treatment methods are adopted for seeds of fruits at different growth periods, so that the seedling rate of hybrid seeds is remarkably increased; different planting manners and trimming methods are adopted for individual hybrid plant, thus, the land source and the labor cost are greatly saved; and economic characters of fruits are screened and eliminated.

Description

technical field [0001] The invention relates to a method for cross breeding of a boll-shaped peach variety, which is suitable for all peach varieties whose flowers are not open but whose stigmas are exposed first. Background technique [0002] Peach is a perennial woody plant. Its fruit is delicious and has rich nutritional value. It is one of the most popular fresh fruits. At present, peach breeding is mainly carried out by conventional hybridization methods, that is, taking pollen in the field and drying it under an incandescent lamp. When pollinating, most of the pollen is collected with a pencil tip, and the pollen is isolated in a paper bag after pollination. For identification, after the traits are stable, conduct a high-grain district test. Peach blossoms can be divided into three types: bell-shaped, rose-shaped and chrysanthemum-shaped. The rose-shaped stigma is wrapped by petals before the flowers open to ensure the purity of hybridization, but the petals of bell-s...

AI Technical Summary

Problems solved by technology

Peach blossoms can be divided into three types: bell-shaped, rose-shaped and chrysanthemum-shaped. The rose-shaped stigma is wrapped by petals before the flowers open to ensure the purity of hybridization, but the petals of bell-shaped flowers are small and the style is long. Easy to be exposed, the stigma is exposed before the flowers are open, and other pollen can easily enter the stigma through the spread of insects or wind, which affects the purity of crossbreeding of bell-shaped peach varieties to a certain extent

Moreover, the flowering period of different peach varieties is different, and the designed hybrid combination cannot collect pollen in time for hybridization because the flowering period of the male parent tree is later than that of the female parent tree; Affecting the Peach Cross Breeding Process

At present, the pruning of peach trees mostly adopts the natural happy shape and Y shape of the three main branches. The growth of the tree is large, and the growth cycle of the peach tree is long, and the area is large. Therefore, land conservation has become an urgent problem to be solved today.