Cuttage breeding method for annona squamosa linn

Abstract

A cuttage breeding method for the annona squamosa linn comprises the processes of variety selecting, seed collecting and sowing, stock plant cultivating, cutting collecting, cutting and post-cutting managing. The big-fruit and high-quality A.P annona squamosa linn variety is selected. Seeds are collected and sown. A good and robust dominant nursery stock is selected as a stock plant, top pruning, water controlling and fertilization are carried out on the stock plant to promote germination, a lignified sprout is selected as a cutting, the cutting is placed in a container cup with a matrix after being processed, a cutting seedling is cultivated, and therefore the good and robust cutting seedling of the annona squamosa linn can be obtained. According to the method, the best of all is selected from the high-quality annona squamosa linn varieties, and therefore the better cutting seedling can be obtained through cultivation. The method has the advantages of being high in breeding speed, simple, easy to operate, high in survival rate and the like, the excellent hereditary character of the annona squamosa linn is kept, the survival rate is higher than 90%, the shortcomings of other vegetative propagation methods of the annona squamosa linn are overcome, and it is of great significance for treatment of stony desertification and ecological environment construction of China and increasing the yield and the economic value of the annona squamosa linn.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation, and relates to a cutting propagation method of custard apple. Background technique [0002] cherimoya ( Annona squamosa Linn) is one of the five famous tropical fruits in the world. It originates in tropical America land or on the islands and West Indies of the Caribbean Sea. It is now widely cultivated in tropical and subtropical regions of the world. Its fruit is not only rich in nutrition, but also has high medicinal value. Anemone lactone is known as "the star of tomorrow's anti-cancer", and it is a green health-care fruit. The soil requirement of custard apple is not strict, and it is suitable for growth in Southwest Guangxi and Youjiang River Valley, regardless of the altitude, as long as there is no frost in winter, so custard apple is the first choice for good economic tree species in the control of rocky desertification and the construction of ecological environment in my coun...

AI Technical Summary

Problems solved by technology

Although the grafting of custard apple is easy to survive, the rootstock must be cultivated first, and the survival of grafting in spring is guaranteed, and the grafted seedlings are prone to root rot, so grafting is easily affected by climate, season, rootstock quality, and high cost.

Layering propagation is to cut off the seedlings first, put a metal growth constriction ring on the base of the sprout after the sprout grows long, put a polyethylene film tube on the sprout, and fill the tube with a mixture of 50% sand and wood chips. The growth point is exposed outside, and after the layering grows a lush root system, it is taken out for another culture; although the survival rate of layering is also high, the procedure is cumbersome, inconvenient to operate, and the cost is high

The production cost of tissue culture propagation is high, and the technical requirements are high, so the tissue culture propagation of custard apple has not been applied in production so far.

Cutting propagation has only been studied abroad at present. A.P.George et al. (scientia Horticulturae, 1987, No. 33) reported that in Florida, cutting strong branches from the mother tree of custard apple during the dormant period for stem cutting propagation has been successful. l cm thick branches are cut into 13-15 cm long sections, and 4 / 5 of them are inserted into the sand, leaving at least one leaf bud out of the soil surface, and roots will be born after about 25-35 days, but in India, the Philippines, and South America, it has been used Stem cutting propagation was not successful; in Queensland, in September, using sand 50% + perlite 50% as substrate, cutting cuttings of 15-20 cm spikes, the average survival rate was only 56%; According to the research, the present invention has obtained a set of cutting propagation technology of custard apple through experimental research.