The cultivation of these materials has significantly promoted the breeding of hybrid varieties and the large-scale commercial production of hybrid seeds(162 cell plug trays supplier). Seed production should be liberated from the decentralized form of self selection and propagation by thousands of households(long life propagation trays). For a long time, China's horticultural plant breeding is basically a single public breeding under the traditional planned economic system.
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According to incomplete statistics, more than 400 varieties of 20 vegetable vegetable hybrids have been bred in China(200 cell plant trays bulk), with an area of more than 200000 Hm2, and most of the yield increasing effects are more than 20% - 30%. In order to improve the breeding efficiency and increase the scientificity and foresight of breeding work(nursery tray manufacturers), some achievements have been made in the research of breeding theory and method.(plastic 7 gallon nursery pots factory united states)
In this paper, the genetic law of some main economic characters(32 cell plant trays bulk), polyploid induction, radiation induced mutation and overcoming the obstacles of distant hybridization in horticultural plants, especially in vegetative lines, were studied, which played an active role in the selection and selection of hybrid parents and the expansion of genetic basis of hybrid materials(19cm plant pots). Since the founding of new China, horticultural plant breeding has made great progress.
(plastic 7 gallon nursery pots factory united states)In terms of tissue and cell culture, haploids of apple, citrus, grape, cabbage, eggplant, tomato, pepper and other horticultural plants were obtained by anther culture in China(50 cell plant trays bulk). Some of them obtained progenies. The virus-free meristematic culture of apple, citrus, grape, peach, potato and garlic, apple, grape, strawberry, cabbage, cauliflower(planting trays wholesale), mustard, asparagus and lily were obtained In vitro Rapid Propagation of Narcissus and Narcissus were successful.
Since the late 1970s, great progress has been made in the application of Isozyme and multiple molecular markers in the study of classification(50 cell seed trays wholesale), evolution, heredity and variety of horticultural plants, as well as the identification of hybrid genetic relationship and purity. Modern agriculture requires the modernization of seed production and marketing(20cm plant pots). Horticultural plant breeding must actively adapt to the reform of economic system.(plastic 7 gallon nursery pots factory united states)
Through transgenic technology(plastic plant trays wholesale), a variety of transgenic horticultural plants, including apple, citrus, grape, walnut, kiwi fruit, bamboo, strawberry, papaya, tomato, eggplant, pepper, cabbage, cucumber, asparagus, taro, etc., have been put into field trials. It shows an attractive prospect in improving the resistance of horticultural plants to diseases and insect pests, virus diseases and detergents(72 cell plug trays), improving the quality and storage performance of horticultural plants.
(plastic 7 gallon nursery pots factory united states)The Fourteenth National Congress of the Communist Party of China put forward the goal of establishing a socialist market economic system(18 cell plug trays supplier). The system reform in the past 10 years has injected new vitality into horticultural plant breeding, but also exposed various drawbacks of seed industry under the traditional planned economy system(plastic flower pots). The whole process of seed production, processing and marketing should be equipped with modern science and technology.
