Method for breeding industrial hemp in greenhouse

Abstract

The invention discloses a method for breeding industrial hemp in a greenhouse and belongs to the field of crop planting. Due to the breeding operation needs of hemp, increasing-generation reproduction is performed in the greenhouse, and crossbreeding is performed. Preparation of greenhouse breeding is performed after hemp seed harvesting for seeding in autumn. The invention aims to provide a method for breeding the industrial hemp in the greenhouse. The method disclosed by the invention comprises the steps of soil loosening before seeding, disinfecting and fertilizing, soil ridging, seeding of industrial hemp, performing field management on seedlings, performing management in a growth period of the industrial hemp, pollinating the industrial hemp and harvesting the industrial hemp seeds. According to the method disclosed by the invention, the defects in an isolation method in the prior art are overcome, the land space utilization ratio of greenhouse breeding is increased, different hybridized combinations are completed in the same place, the isolation effect is excellent, the isolated heterogonous plant rate is controlled to be 1-5%, the heterogonous plant hybrid rate is reduced by 10-14% due to mixing of varieties, and the labor intensity of scientific research personnel is reduced.

Description

technical field [0001] The invention belongs to the field of crop planting; in particular, it relates to a method for breeding industrial hemp in a greenhouse. Background technique [0002] There are currently three methods of isolation and pollination for industrial hemp hybrid breeding. The first method is the spatial isolation pollination method. When configuring hybrid combinations, the two parents are planted next to each other, but the distance between different combinations is more than 2km. When the male plant in the female parent Pull out when budding; leave the target male plant in the male planting area, pull out the diseased and weak plants, and pollinate freely when flowering. This method is time-consuming and troublesome to implement, and the cost is relatively high, and it is not easy to configure more hybrid combinations. Adopting this method will cause slow breeding progress; Plant adjacent to each other, and when it is about to bloom, put the female and ma...

AI Technical Summary

Problems solved by technology

This method is time-consuming and troublesome to implement, and the cost is relatively high, and it is not easy to configure more hybrid combinations. Adopting this method will cause slow breeding progress; Plant adjacent to each other. When it is about to bloom, put the female and male inflorescences in a paper bag, and shake the plants to pollinate them when blooming

This method is simple and easy to implement, but the paper bag has poor air permeability and water permeability, and the temperature inside the bag is high, which may easily cause poor pollen ripening, resulting in fewer hybrid fruits, uneven seed quality, and the paper bag is easy to rupture, resulting in hybridization failure; the third method: dividing Branch bagging to isolate the artificial pollination method. Before flowering, the inflorescences of the father and mother plants are thinned out, and then bagged separately. When the inflorescences in the paper bags of the male plants and the female plants are partially bloomed, the paper bags on the male plants are taken off and placed on the female plants. pollination

This method has a large workload, it is difficult to observe the pollination situation, it is greatly affected by the weather, and it is easy to pollinate

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