Phenotypic variations of maize after dry seed exposure to space conditions
--Pan, D, Zhou, W
It is known that space treated seeds usually show a pleiotropic effect on the phenotype of the plant during growth and development. The mechanism of the effect of space conditions on plant seeds is not really understood at the present time. In 2002, we sent seven maize inbred lines onboard the Space Shuttle Endeavor STS-112 to the International Space Station (ISS) for examination of the effect of space conditions on these inbred lines. After keeping the seeds on the ISS for ten days, the retrieved seeds were grown on earth and compared with Earth control seeds. Following is a summary of the observations on the phenotypes after germination and growth.
Generally speaking, some of the space treated seeds showed a variety of effects on phenotypes during germination and growth. The genetic consequence of the effect of space conditions on the seeds of some inbred lines is now under investigation.