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研究了砂磨赤霉素浸种、浓硫酸酸蚀和热水浸种3种硬实破除方法对悬岩棘豆和米尔克棘豆种子萌发率、萌发进程及平均萌发时间的影响。结果表明:砂磨赤霉素(200 mg/L)浸种和浓硫酸酸蚀2种方法均可以显著提高(p<0.05)2种棘豆的萌发率,加快种子萌发进程,缩短平均萌发时间。与对照组相比,悬岩棘豆和米尔克棘豆的萌发率分别从27.0%和4.0%提高至97.0%和86.0%;平均萌发时间分别由8.9 d和8.1 d缩短至1.6 d和2.1 d。时间长短的控制是处理时的关键问题,2种棘豆砂磨赤霉素处理均以24 h为最佳,浓硫酸处理分别以5 min和10 min为最佳。热水浸种虽在一定程度上提高了2种棘豆的萌发率,但对萌发进程和平均萌发时间几无影响。悬岩棘豆在砂磨后用200 mg/L的赤霉素处理24 h时萌发最好,而米尔克豆种子在浓硫酸处理种子10 min时萌发最好。
Abstract：Three different hard break methods which were sanding GA3 soaking,sulfuric acid pickling and soaked with hot water were used to investigate the effects of on the Oxytropis rupifraga and Oxytropis merkensis seed germination rate,germination process and mean germination time. The results showed that: both sanding GA3(200 mg/L) soaking and sulfuric acid pickling could significantly improve the Oxytropis' germination rate(p < 0. 05)accelerate the process of seed germination and reduce the average germination time. Compared with control group,Oxytropis rupifraga germination rate increased from 27. 0% to 97. 0%,Oxytropis merkensis germination rate increased significantly from 14. 0% to 86. 0%; the average germination time of two kinds of Oxytropis was shortened from 8. 9 d to 1. 6 d and 8. 1 d to 2. 1 d respectively. The key lied on the processing time. 24 hours of GA3 soaking treatment on 2 Oxytropis were the best. For Sulfuric acid pickling,the 5 min and 10 min treatments were the best. Soaking in hot water treatments,could improve the two Oxytropis' germination rate,but had little influence on the germination process and mean germination time. The GA3 soaking treatment with 24 hours was the best in seed germination,and treated 10 min with Sulfuric acid pickling was also available.
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基本信息:
中图分类号:S330.3
引用信息:
[1]杨丽聪,黄文娟,李志军.2种棘豆种子硬实破除方法研究[J].塔里木大学学报,2015,27(01):1-8.
基金信息:
新疆生产建设兵团“十二五”种质资源创新与功能基因发掘及利用专项课题(2012BB045)
2015-03-15
2015-03-15