A method for increasing yield of hybrid seed production of sweet potato group

Abstract

The invention discloses a method for improving the yield of hybrid seed production of sweet potato groups. The method provided by the invention comprises the following steps: 1) selection of seed production base; 2) selection of seed production parents; 3) transplanting and post-planting management; 4) removal of impurities and diseases; 5) topping and scaffolding; 6) ) harvesting of seeds; 7) drying and storage of seeds. The beneficial effects of the present invention are as follows: 1. An isolated area is set, which avoids the possibility of hybridization of other non-target parents and improves the quality of seed production. 2. Only one type of sweet potato is planted, which increases the probability of passing the identification of the offspring. 3. Minimize the risk of spreading sweet potato pests and diseases through isolated trial planting and epidemic detection, effectively avoiding the spread of sweet potato pests and diseases. 4. By removing the main vines, more side vines can be obtained to increase the flowering volume and ensure the fruit setting rate. 5. Plant nectar plants around and in the middle of the seed production field to help attract bees to pollinate and increase seed production. The seed production method of the invention lays a foundation for the cultivation of new sweet potato varieties.

Description

technical field [0001] The invention belongs to the field of agricultural technology, and in particular relates to a method for improving the yield of hybrid seed production of sweet potato groups. Background technique [0002] Sweet potato is an important food, feed, industrial raw material and energy crop. In recent years, with the increasingly severe global oil supply situation, the development and utilization of biomass energy has become increasingly important. Sweet potato has a high starch yield per unit area and is considered to be an ideal raw material for the production of fuel ethanol. As a new type of energy plant, sweet potato has huge market potential and will play an important role in my country's energy security. The growing demand for sweet potatoes calls for the development of more new varieties. [0003] The breeding methods of new sweet potato varieties are as follows: laissez-faire pollination, directional hybridization, budding and line selection. Fr...

AI Technical Summary

Problems solved by technology

Domestic breeding units need to create a large number of hybrid seeds every year, but sweet potato is a short-day plant. Due to the long sunshine time in northern China, most varieties cannot bloom naturally

To overcome this obstacle, sweet potato breeders usually use a combination of grafting and short-day treatment to promote sweet potato flowering and fruiting, which requires a lot of time and effort