Method for breeding high-resistance sorghum variety suitable for mechanical harvesting

Abstract

The invention discloses a method for breeding high-resistance sorghum variety suitable for mechanical harvesting and belongs to the technical field of sorghum breeding for disease and pest resistance. In the method, a high-yield good-quality sorghum variety, a sorghum variety high in schizaphis graminum, rhopalosiphum maidis, sorghum aphid and head smut resistance and a saline-alkaline-tolerance sorghum variety serve as parents, and by means of hybridization and composite crossing polymerization, the sorghum variety capable of resisting four diseases and pests simultaneously, resistant to salt, excellent in agronomic character and yield trait and suitable for mechanical harvesting is bred through resistance identification and screening of plant and leaf shape and yield trait of multiple generations. The variety is suitable for mechanical harvesting and high in schizaphis graminum, rhopalosiphum maidis, sorghum aphid and head smut resistance, can reduce consumption of pesticides in the cultivation process, increases the yield, reduces environment pollution, and increases income of farmers.

Description

technical field [0001] The invention specifically relates to a breeding method suitable for mechanized harvesting of high-resistant sorghum varieties, and belongs to the technical field of sorghum pest-resistant breeding. Background technique [0002] Sorghum is one of the most important food, feed, brewing and energy crops in the world, and it is also a model plant for C4 plant research. In terms of annual production, sorghum is the fifth largest cereal crop after maize, wheat, rice and barley. As a raw material for brewing (wine making and vinegar making), sorghum has a long history of cultivation in my country. The eight famous wines and Shanxi mature vinegar are all brewed from sorghum as the main ingredient. Aphids are important pests in agricultural production, harming almost all cultivated crops. The aphids that harm sorghum mainly include sorghum aphid, digemy wheat aphid and corn aphid. Because aphids have a short growth cycle and high reproductive rate, their co...

AI Technical Summary

Problems solved by technology

Since the vast majority of sorghum varieties promoted in my country are large ears, medium-tall stalks, and poor lodging resistance, they are basically not suitable for mechanized production. The expensive labor costs of artificially harvested sorghum production methods have become an important factor affecting farmers' enthusiasm for sorghum planting.