The placebo effect
The placebo effect
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DOI：
10.1038/scientificamerican0198-90
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发表时间：
1998-01-01
影响因子：
3
通讯作者：
Brown, WA
中科院分区：
文献类型：
--
作者：
Brown, WA
种子为毛合果木Syncarpha vestita（L.）B。诺德。（菊科）和红球藻（菊科）在含水烟雾溶液中预处理24小时，然后干燥并在18 °C下储存。对照种子以相同的方式处理，不同之处在于将它们浸泡在蒸馏水中。在12个月的每月间隔中，将种子样品从储存中取出，并在10 °C的交替温度下发芽16小时，然后在20 °C下发芽8小时。烟熏液预处理打破休眠，显著提高发芽率。预处理的效果保持在种子发芽在所有的时间间隔，并包括12个月的存储。结果表明，烟熏处理是有效的和持久的，并且在播种前不需要进一步的打破休眠的处理。
Seeds ofSyncarpha vestita(L.) B. Nord. (Asteraceae) andRhodocoma gigantea(Kunth) Linder (Restionaceae) were pre-treated in aqueous smoke solution for 24 h before being dried and stored at 18 °C. Control seeds were treated in the same way except they were soaked in distilled water. At monthly intervals for 12 months, seed samples were taken out of storage and germinated at alternating temperatures of 10 °C for 16 h followed by 20 °C for 8 h. Pre-treatment in smoke solution broke dormancy and gave a significant improvement in germination. The effect of pre-treatment was maintained in seed germinated at all intervals up to and including 12 months storage. The results are of significance in showing that the smoke treatment is effective and long lasting and that no further dormancy breaking treatments are required before seeds are sown.