Darkroom for inducing sweet potatoes to bloom and method for improving sweet potato hybridization efficiency

Abstract

The invention relates to a darkroom for inducing sweet potatoes to bloom and a method for improving sweet potato hybridization efficiency, the darkroom is structurally a skeleton greenhouse, the top of the greenhouse is covered with an insect-proof net, and the outer surface of the insect-proof net is covered with rain-proof and sun-proof sunshade cloth; at least two hybridization ponds are arranged in the framework greenhouse, the pond walls of the hybridization ponds are built by bricks and cement, the spaces in the ponds are filled with soil, the distance between every two hybridization ponds is 100 cm, the width of each hybridization pond is 100 cm, the height of each hybridization pond is 50 cm, and the length of each hybridization pond is randomly determined. The invention also discloses a method for inducing sweet potato flowering by using the darkroom. The method is characterized in that the darkroom is simple and can be built in any open space, and the framework greenhouse is covered with an insect-proof net and sunshade cloth to form the darkroom for inducing sweet potatoes to bloom; the grafting time is advanced by 50 days, sweet potatoes can bloom and pollinate at the beginning of July, sweet potato plants enter a full-bloom stage at the beginning of August, a large number of hybrids can be obtained in August and September, and compared with a traditional grafting hybridization mode, the seed production amount can be doubled every year.

Description

technical field [0001] The invention belongs to the field of agricultural planting, and in particular relates to a darkroom for inducing flowering of sweet potatoes, a construction method thereof and a method for improving hybridization efficiency of sweet potatoes. Background technique [0002] Sweet potato is a temperature-loving, short-day crop. Most varieties cannot flower naturally under long-day sunshine conditions north of 23 degrees north latitude. However, sexual hybridization of sweet potato must adopt artificial induction to solve the flowering problem of the parents. Artificial induction is the parental sweet potato. Graft on the relative plants of Convolvulaceae (morning glory, bird's-eye, etc.), and treat sweet potato with 8-10 hours of short-day treatment every day to promote flowering of sweet potato. Short-day treatment requires darkrooms, dark boxes and other facilities, and the management is more complicated. [0003] The current darkroom mostly adopts th...

AI Technical Summary

Problems solved by technology

Xiongfeng has a wide range of activities, so it is not suitable for stocking in a confined space. Raising Xiongfeng in a closed space is very aggressive and can easily hurt people.

Xiongfeng is not suitable for stocking because of the need to continuously remove stubble and tie branches during the hybridization of sweet potatoes.

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