Determination Testing of Seed Hardness of Staple Breeding Wheat Seed in Gansu Province of China

摘要

Seed hardness is one of the important indexes of grain classification. It has close relationship with grain powder, flour quality, seed storage and processing, resist insect pest and so on. In this study, which applied based on the grain hardness indentation loading curve method and chose 3 kind of staple breeding wheat seed to determine the seed hardness in Gansu province. The experimental results showed that the average hardness value of staple breeding wheat seed was 22.42 MPa~57.85 MPa and the dispersion of the hardness value was small, which also between 3~12%. The seed hardness of breeding wheat of Western drought-resistant No.1 was maximum (52.36~61.36MPa) and the seed hardness of breeding wheat of Western drought-resistant No.3 between two parties of the other breeding wheat, which was 42.12~50.20MPa. The seed hardness of breeding wheat of Western drought-resistant No.2 was minimum, which were 58.10~62.91% and 47.91~54.66% lower than the rest of the two breeding wheat seed hardness respectively. The findings will provide theoretical basis for seed production and processing and the stimulation analysis by EDEM.