Method for promoting cutting rooting and seedling formation of tender branches of xanthoceras sorbifolium

Abstract

The invention discloses a method for promoting cutting rooting and seedling formation of tender branches of xanthoceras sorbifolium, and belongs to the technical field of forestry biology. The methodcomprises the following steps: in spring, excellent germplasm of the xanthoceras sorbifolium is selected, branches are cut, whole plants are covered by bags for shielding light, etiolation tender branches are collected 70 days, 80 days and 90 days after etiolation treatment is performed, the tender branches are pruned to tender branch cuttings, wherein each tender branch cutting is about 7-10 cm,the cuttings are processed by using indoleacetic acid with different concentrations, cutting is performed, cuttings are normally managed in a full-illumination spray cutting bed for rooting, 90 days after the cutting is performed, a rooting rate is counted, 110 days after the cutting is performed, growth period prolonging treatment is performed by using a simplified greenhouse on the cutting bed,and 280 days after the cutting is performed, a seedling forming rate is counted. According to the method disclosed by the invention, the etiolation treatment is performed for 80 days, the indoleaceticacid with a high concentration of 5000 mg / L is used for treatment, and cutting management is performed under the full-illumination spray conditions, so that the rooting rate and seedling forming rateof the tender branches of the xanthoceras sorbifolium are greatly improved; and the method for promoting the cutting rooting and seedling formation of the tender branches of the xanthoceras sorbifolium provided by the invention provide a technical basis for excellent seedlings of vegetative propagation much required by large-scale planting of a xanthoceras sorbifolium forest in China.

Description

technical field [0001] The invention relates to a method for promoting rooting and seedling formation of sorbiflora twig cuttings, and belongs to the field of forestry biotechnology. Background technique [0002] Xingoguan fruit is a native woody oil-bearing tree species in northern my country, and its seed oil is a new type of healthy woody edible vegetable oil that my country focuses on. Combined with the greening of barren hills and slopes, returning farmland to forests, forest land renewal, and desertification control, my country will develop sorbifolium as the focus of strengthening ecological construction in the northwest, developing forestry industries, and promoting farmers to increase their income and become rich, and it will be included in the top ten. Focus on the development of woody oil plants. By 2020, the area of ​​sorbifolium in my country is expected to reach 10 million mu. [0003] However, the yield of X. sorbifolium, known as "one thousand flowers and one...

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Problems solved by technology

However, so far, although the above research has provided the basis for the vegetative propagation of X. sorbifolium to a certain extent, the X. sorbifolium seedlings used in afforestation are all seed seedlings, and there is no planting and popularization of cutting seedlings.

The main reason for the lack of asexual cutting seedlings in the sorbifolium seedlings market is still the low rooting rate and lower seedling rate of sorbifolium sorbifolium cuttings. The research team of the inventor of the present application has repeated the cutting processing methods of most of the above-mentioned studies. The rooting rate of cuttings obtained data is between 20% and 30%, and the seedling rate under natural conditions is even less than 20%.

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