[A study of genetic stability of male sterile mutant of maize obtained from space flighted seeds].

OBJECTIVE

To select a male sterile mutant of maize through space flight for production application.

METHOD

Air dried seeds of maize (Chuan Dan No. 9) were carried to space for 15 d. After returned to the earth, a male sterile mutant was selected and a sterile line was obtained through direction breeding.

RESULT

It was found that the sterile material was thoroughly abortive. The sterile was trail stable and expressed a genetic feature of single recessive gene controlled nucleus sterility.

CONCLUSION

The appearance of male sterile mutant was due to gene mutation caused by space conditions.