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2023/5/4

Rapid selection method for feed corn that does not easily fall over, developed by Tokyo Institute of Technology and others

University Journal Online Editorial Department

　A group from the Tokyo Institute of Technology, Hokkaido University, the University of Tokyo, and Kyoto University has developed a new technology that uses elastic waves to nondestructively, rapidly, and accurately measure the easiness of deformation of corn stalks used for feed. succeeded in doing

　One of the problems in the production of domestic feed corn is the phenomenon of corn lodging caused by typhoons and heavy rains.Lodging is widespread in cereal crops, reducing yield and quality and causing significant reductions in operating speed.On the other hand, in order to make feed corn production economically viable, it is necessary to realize large-scale and efficient production, and avoiding the occurrence of lodging is an important issue.

　Until now, destructive testing using a material testing machine has been carried out in the selection of cereal crop lines that are resistant to lodging (lodging-resistant lines).This method has been difficult to apply to maize breeding because it is necessary to cut stems and leaves from the field on a per-individual basis, prepare stem fragments, and determine the strength by bending tests while the stems are fresh.

　The research group developed an ultra-compact sensor array inspired by earthquake engineering, and combined it with physical numerical simulations to quickly and accurately evaluate the Young's modulus (one of the values ​​representing hardness and softness) of corn varieties. Propose a method toIn the research, elastic waves (waves propagating inside the tissue) generated by lightly tapping the ground part of corn are observed and analyzed with a sensor array attached to the stalk, and the stalk is detected within 0.1 seconds. Young's modulus was measured.Furthermore, the validity of Young's modulus obtained by the new technology was confirmed by physical numerical simulation and field test.

　It is expected that the results of this research will be applied to rice, wheat, soybean, etc., and that it will help develop varieties that are resistant to typhoons and heavy rains.

Paper information:[Scientific Reports] Non-destructive high-throughput measurement of elastic-viscous properties of maize using a novel ultra-micro sensor array and numerical validation

Tokyo University

Established in the 10th year of the Meiji era.A university with the longest history in Japan and at the forefront of Japanese knowledge

The University of Tokyo was established in 1877 (Meiji 10) by integrating the Tokyo Kaisei School and the Tokyo Medical School.Since its establishment, it has developed education and research in a unique way in the world as a leading university in Japan and an academic center for the fusion of East and West cultures.As a result, many human resources have been produced in a wide range of fields, and many research achievements […]

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Kyoto University

Foster a free academic style based on the spirit of "self-respect for self-weight" and open up a world of creative learning.

With the motto of self-study, we will continue to maintain a free academic style that is not bound by common sense, and develop human resources who have both creativity and practical ability.We provide an inclusive learning space that allows for diverse and hierarchical choices so that students themselves can choose a solid future through valuable trial and error. […]

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Tokyo Institute of Technology

The pinnacle of science and engineering university that continues to produce science and engineering people with high aspirations and a Japanese spirit, mastering the knowledge that creates the times, refining their skills

Tokyo Institute of Technology was established as the Tokyo Institute of Technology in 1881 (Meiji 14), when modernization of industry was an urgent need.Since its establishment, it has continued to produce excellent research results with excellent science and engineering human resources, and is still at the top of Japan's science and engineering universities.Tokyo Institute of Technology requires not only a high degree of specialization but also liberal arts […]

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Hokkaido University

Strong cooperation with industry and regions "Practical science unique to Hokkaido University" leads the world

The origin of Hokkaido University dates back to Sapporo Agricultural College, which was established in 1876.Throughout its long history, we have cultivated the basic principles of "frontier spirit," "cultivating internationality," "education for all," and "emphasis on practical studies."Based on this philosophy, he has a high level of academic background that is internationally accepted, and has accurate judgment and a leader […].

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