摘要
考察了室温和低温贮藏2年的穿心莲种子经41℃、100%R.H.条件下加速老化1~7 d后的萌发活力和萌发过程中幼苗生长量的变化,结果表明：室温贮藏种子的发芽率为0;低温贮藏种子发芽率为93.5%,且老化1~2 d后萌发活力未见显著变化,老化3~4 d后则加速了萌发,老化5~7 d萌发活力和幼苗株高显著下降。因此,低温贮藏是实际可行的方法,对穿心莲种子批进行活力检测时需要老化5 d以上。
This experiment was conducted to evaluate the effects of duration of accelerated aging at 41℃ and 100% R.H.on Andrographis paniculata seed germination characteristics after 2 years storage.Results showed that germination percentage of the seeds was zero after room temperature storage;but that was 93.5% after 4℃ storage.No significant change on germination vigor was observed after 1～2d accelerated aging;germination index was increased by 3～4d accelerated aging,germination vigor and seedling height were significantly decreased by 5～7d accelerated aging.Thus,seeds stored at 4℃ would be beneficial to production,and it should be accelerated aged for at less 5 d in seed vigor test of Andrographis paniculata.
出处
《广东农业科学》
CAS
CSCD
北大核心
2012年第14期20-21,28,共3页
Guangdong Agricultural Sciences
基金
国家科技重大专项子课题(2009ZX09308-002)
关键词
穿心莲
种子活力
加速老化
贮藏
Andrographis paniculata
accelerated aging
seed vigor
storage
