RELATIONSHIP BETWEEN M_1 DAMAGE EFFECT AND M_2 MUTATION FREQUENCY OF RADIATED BARLEY
Wang Guirong (Center Laboratory of Shandong Agri. Univ., Taian, China 271018) Zhang Deshui (Dept. of Agronomy, Shandong Agri. Univ., Taian, China 271018)
The beer barley Lupi 1 was irradiated with Co~(60)-gamma rays at doses of 0, 93.3, 186.6, 279.9, 373.2, 559.8Gy. The relation between the mutation rates of chlorophyll and agronomic character in M_2 generation and the plant damage and cytological damage in M_1 generation was analysed. The frequencies of agronomic character mutation and chlorophyll mutation in M_2 had significant correlation in exponential function with the frequencies of somatic chromosome aberration, micronuclei, yellow leaf-tip, sterility and seedling height of M_1. The mutation frequency of agronomic traits was not significant in correlation with chlorophyll in M_2 and the rate of seedling emergency in M_1. The linear relation between various damages in M_1 and radiation doses was significant. A remarkable exponential function relation was also found between the mutation rate of chlorophyll and character in M_2 and radiation doses.
【CateGory Index】： S330.2