不同处理方式对野火球种子硬实及萌发的影响  

Effects of Different Treatments on Seed Rigidity and Germination of Trifolium lupinaster

作　　者：彭新 石凤翎 张锐 付娜娜 杨艳婷 PENG Xin;SHI Fengling;ZHANG Rui;FU Nana;YANG Yanting(College of Grassland,Resources and Environment,Inner Mongolia Agricultural University/Key Laboratory of Grassland Resources,Ministry of Education,Hohhot 010011,China;College of Horticulture and Plant Protection,Inner Mongolia Agricultural University,Hohhot 010018,China;Institute of Grassland Research,Chinses Academy of Agricultural Sciences,Hohhot 010010,China)

机构地区：[1]内蒙古农业大学草原与资源环境学院/草地资源教育部重点实验室,内蒙古呼和浩特010011 [2]内蒙古农业大学园艺与植物保护学院,内蒙古呼和浩特010018 [3]中国农业科学院草原研究所,内蒙古呼和浩特010010

出　　处：《中国草地学报》2023年第2期76-83,共8页Chinese Journal of Grassland

基　　金：国家自然科学基金(32160323);内蒙古自治区科技重大专项(2021ZD0031)。

摘　　要：采用砂纸打磨+变温、砂纸打磨+恒温两个双因素试验及酸、碱两个单因素试验共四种方式对野火球种子进行处理,筛选破除野火球种子硬实的最佳温度条件以及最佳方法。结果表明:(1)砂纸打磨+恒温、砂纸打磨+变温处理的硬实率显著降低,砂纸打磨+恒温处理以恒温25.0℃处理的萌发及硬实破除效果最佳,砂纸打磨+变温处理以10.4℃/26.6℃为打破野火球种子硬实、促进萌发的最佳变温条件。(2)98%H_(2)SO_(4)处理8 min时野火球种子发芽率略高于对照但无显著差异,但活力指数显著高于对照(P<0.05),硬实率降低,种子受损程度小。(3)野火球种子在0.5 mol/L NaOH处理下的发芽率和活力指数与对照相比均显著降低(P<0.05),对硬实破除无显著效果,死种子数增加,种子活力降低,种子萌发受抑制。In order to screen the best temperature condition and the optimal method for breaking the hard seed of Trifolium lupinaster,four methods were used to treat the seeds,including two factor tests(sandpaper grinding+variable temperature,sandpaper grinding+constant temperature)and two single factor tests(acid and alkali).The results showed that:(1)The seed rigidity of sandpaper grinding+constant temperature and sandpaper grinding+variable temperature treatment decreased significantly.In the sandpaper grinding+constant temperature,the germination and seed rigidity breaking effect of 25℃treatment was the best.In sandpaper grinding+variable temperature treatment,10.4℃/26.6℃was optimal for breaking seed rigidity and promoting germination.(2)The germination rate treated with 98%H_(2)SO_(4)for 8 min was slightly higher than that of the control,but there was no significant difference;the vigor index was significantly higher than that of the control group(P<0.05),the hard seed rate was decreased,and the degree of seed damage was slight.(3)Compared with the control,0.5 mol/L NaOH treatment significantly reduced the germination rate and vigor index of Trifolium lupinaster seeds(P<0.05),but had no significant effect on hard seed breaking,increased the number of dead seeds,decreased seed vigor,and inhibited seed germination.

关 键 词：野火球 砂纸打磨 温度 酸碱处理 硬实 

分 类 号：S541.9[农业科学—作物学]