离子注入加工番茄和茄子种子的生物学效应

Biological effects of ion implantation on processing tomato and eggplant seed

用6种不同注量的低能氮离子(N+)注入加工番茄87-5种子,出苗率有所降低,但M1代平均单株座果数增加,早熟20d。M2代仍表现出早熟、抗病和较强的生长势。根据两年的试验结果,从加工番茄的早熟性、抗病性、丰产性和品质因素等方面综合分析,采用6×1016cm-2(60次脉冲)的N+注入加工番茄87-5种子,可获得显著的当代生物效应和第二代生物效应。在低能N+注入五叶茄种子的M1代中出现了多纵沟的变异果,形如去皮的柚子,单收此果种子进行种植,在M2代分离的果形中,出现了同时具备抗病、紫红、脐小、果大等优良性状的变异果,最大单果重1.53kg,为育种提供了珍贵材料。

The seed of processing tomato “87-5” (Lycopersicon esculentum Mill) were implanted by the low energy nitrogen ion (N+) with 6 different doses. The rate of emergence was little reduced in M1 generation, but the fruiting number per plant was increased and its maturing earlier 20 days than the control. The precocity, disease resistance and stronger growth vigor were shown in M2 generation. Experimental results of two years showed that, according to synthetic analysis in factors such as precocity, disease resistance, high yield and quality, the N+ dose of 6×1016cm-2 (60 times of pulse) for tomato seed “87-5” had been proved to have notable biological effects on M1 and M2 generation. The seed of eggplant “Wuyeqie” (Solanum melongena L.) was also implanted by the low energy nitrogen ion (N+) with 2 different doses. Multi-vertical channel fruits were obtained in variable M1 generation, which liked the pomelo without peel. The seed of these variable eggplants was taken and planted in the next year. The meaningful variable fruits, the characters of disease-resistance, purple-peel, small-navel, lantern-form, large-scale, etc. were obtained in beneficial M2 generation. The biggest single-fruit weight reached 1.53kg, providing valuable germplasm resource for breeding.