关键词: 茄果类蔬菜, 空间诱变, 变异材料, 选育技术

Abstract: Variations in the aromatic materials SP₁ to SP₄ generation of eggplant, pepper and tomato were investigated. The results showed that variations in the aromatic materials occurred in SP₂ generation, and the variation frequency was approximately 0.5% in general. Selective breeding for variation materials of solanaceous vegetables by space mutation was presented. The amount of spaceflight seeds should be not less than 500. Single plant of SP₁ generation was numbered and the seeds were reserved. All individuals from SP₁ generation should be kept and the population should be not less than 1 000 when SP₂ generation was planted. Selective breeding for SP₂ generation should be underlined. Only seeds of variants of SP₂ generation were reserved, and the selected variants were numbered and the seeds were reserved. The selected SP₂ generation materials were planted and formed line pool of SP₃ generation. The valuable variant seeds of SP₃ generation and subsequent generations were reserved. More than 30 plants from every line of next generation were planted until stable elite variation materials were selected out.

Key words: solanaceous vegetables, space mutation, variation materials, breeding technology