Via hybridization experiment of Aijiaonante/CHA-2, it was proved that the space mutant dwarf gene h was nonallelic with the semi-dwarf gene sd-1 and CHA-2 really contained the semi-dwarf gene sd-1. 4.

• CHA-2与矮脚南特的杂交试验验证了空间诱变的矮秆基因h与sd-1的非等位性，同时证明了CHA-2中sd-1的存在。