摘要
用H2O、200 g.L-1PEG-6000、2.5 g.L-1KNO3、100 mg.L-1GA3、12.5 mg.L-16-BA引发处理丹参种子,研究不同处理对种子萌发及幼苗抗旱性的影响。结果表明,各处理提高发芽势、发芽率的顺序为12.5 mg.L-16-BA>100 mg.L-1GA3>2.5 mg.L-1KNO3>200 g.L-1PEG-6000>H2O>CK;简化活力指数顺序为2.5 mg.L-1KNO3>100 mg.L-1GA3≈200 g.L-1PEG-6000>H2O>12.5 mg.L-16-BA>CK。幼苗的抗旱性顺序为H2O>200 g.L-1PEG-6000>2.5 mg.L-1KNO3>12.5 mg.L-16-BA>CK>100 mg.L-1GA3。最终得出用200 g.L-1PEG-6000或2.5 mg.L-1KNO3作为引发剂处理丹参种子,可有效促进种子萌发和提高幼苗抗旱性。
Salvia seeds were subject to different priming of H2O,200 g·L-1 PEG-6000,2.5 mg·L-1 KNO3,100 mg/L GA3 and 12.5 mg/L 6-BA to research the effects of different treatments on seed germination and seedling drought tolerance.The result showed that the sequence of germination energy and germination percentage was 12.5 mg/L 6-BA100 mg/L GA32.5 mg·L-1 KNO3200 g·L-1 PEG-6000H2OCK;and the sequence of simplified vigor index was 2.5 mg·L-1KNO3100 mg/L GA3≈200 g·L-1 PEG-6000H2O12.5 mg/L 6-BACK.the rank of drought resistance was H2O200 g·L-1 PEG-60002.5 mg·L-1 KNO312.5 mg/L 6-BACK100 mg/L GA3.In conclusion 200 g·L-1 PEG-6000,or 2.5 mg·L-1 KNO3 can effectively promote seed germination and improve seedling drought-resistance.
出处
《西北农业学报》
CAS
CSCD
北大核心
2010年第7期93-97,共5页
Acta Agriculturae Boreali-occidentalis Sinica
基金
"十一五"国家支撑计划课题2007BAD79B01
"十一五"国家支撑计划课题2007BAD79B06
关键词
丹参
引发处理
萌发
抗旱性
Salvia miltiorrhiza Bunge seed
Priming treatments
Germination
Drought-resistances
