熱中性子에 依한 大豆의 耐開莢性 品種育成

Improvement of Shattering Resistance by Thermal Neutron Irradiation in Soybean Variety

In order to obtain shattering resistant mutants in a variety Chungbuk-Baik, which is extremely susceptible in shattering at maturity, seeds of the variety were irradiated with thermal neutrons. The results obtained for three generations (M₆-M₈) are summarized as follows: 1. Shattering in the 5 selected lines were singnificantly decreased as compare with the control variety Chungbuk-Baik and singificant differences in shattering among selected lines and years were not found. 2. Yield at maturity without consideration of shattering was slightly lower in the selected lines as compare to the control variety Chungbuk-Baik, whereas seed size, number of branches, number of pods and lodging were similar to those of control. 3. A selected line CS-15-15-P was of great promise in shattering and other agronomic characters.