【摘要】 分别用早籼“二九青”植株和种子作试验材料,¹⁴CO₂和Na₂¹⁴CO₂作诱变剂,M₂代熟期和株高突变率作为考察指标。研究了¹⁴C诱变效应与处理剂量的关系。结果表明,¹⁴CO₂处理植株和Na₂¹⁴CO₂处理种子的诱变效应与剂量关系趋势相似。两种处理的熟期和株高总突变率均以111×10⁴Bq/株（粒）剂量处理最高。其中诱变早熟突变的适宜剂量为222×10⁴Bq/株（粒）左右;诱发矮秆突变的适宜剂量为74×10⁴Bq×株（粒）左右。更多还原

【Abstract】 The relationship between mutagenic effects and doses of ¹⁴ C on rice were studied with the plants and seeds of early indica rice ’Erjiuqing’ as test materials, with ¹⁴ CO₂ and Na₂¹⁴ CO₃ as mutagens.The mutation rates of heading date and plant height were observed in M₂.The results showed that the tendencies of relationships between mutagenic effects and doses were similar for both methods of rice plants treated by ¹⁴ CO₂ and rice seeds treated by Na₂ ¹⁴ CO₃ solution.The highest total mutation rates for both methods came from the treatments with the dose of 111×10⁴ Bq / plant or grain.Among them, the suitable dose, for inducing early-maturing mutation was about 222×10⁴ Bq / plant or grain; for inducing short-stem mutation was about 74×10⁴ Bq/plant ot grain.更多还原