[Mutagenic effects of gamma-rays on Coix lacryma-jobi var. ma-yuen].
OBJECTIVE
To study the mutagenic effect of gamma-rays on Coix lacryma-jobi var. ma-yuen.


METHODS
Physiological and mutagenic effects of gamma-rays on C. lacryma-jobi var. ma-yuen dormant seeds were studied. The germination percentage, seeding survival, seeding height and root length of M1 plants and the frequency of chlorophyll mutation in M2 generation were selected as criteria.


RESULTS
The gamma-rays showed obvious inhibitory action to the seedling growth, and a strong ability in inducing the chlorophyll mutation.


CONCLUSIONS
The gamma-rays is one kind of C. lacryma-jobi var. ma-yuen effective mutagen. The appropriate dose of gamma-rays is 450 Gy for C. lacryma-jobi var. ma-yuen dormant seeds.
Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 310029, China. xiaoxiashen@sina.com
Xiao-xia
XX
Shen
Zhi-an
ZA
Wang
Xu-ping
XP
Yu
D002734:Chlorophyll / Q000378:metabolism; D002736:Chloroplasts / Q000235:genetics / Q000378:metabolism / Q000528:radiation effects; D003037:Cobalt Radioisotopes; D031742:Coix / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects*; D005720:Gamma Rays; D018525:Germination / Q000235:genetics / Q000502:physiology / Q000528:radiation effects; D002479:Inclusion Bodies; D016296:Mutagenesis / Q000528:radiation effects*; D009154:Mutation / Q000528:radiation effects; D018517:Plant Roots / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects; D011829:Radiation Dosage; D036226:Seedlings / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects; D012639:Seeds / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects
D003037:Cobalt Radioisotopes; D002734:Chlorophyll