| 砂梨种子休眠原因与解除休眠方法的研究 |
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| 引用本文： | 蔺经,杨青松,李小刚,颜志梅,盛宝龙.砂梨种子休眠原因与解除休眠方法的研究[J].江西农业大学学报,2006,28(4):525-528. |
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| 作者姓名： | 蔺经 杨青松 李小刚 颜志梅 盛宝龙 |
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| 作者单位： | 江苏省农业科学院,园艺研究所,江苏,南京,210014 |
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| 摘 要： | 对砂梨(P.pyrifaliaNakai)种子休眠主要原因与解除休眠的主要方法进行了研究。结果表明,引起砂梨种子休眠的主要有种皮障碍、种胚休眠和种胚后熟;而解除休眠的主要方法为低温层积处理和植物生长调节剂处理。裸层积和沙层积在解除种子休眠上的发芽效果是一致的,使用GA3溶液浸种,不能完全打破种子休眠,用GA3500~1 000 mg/L低温层积30 d即可解除种子休眠,比直接沙层积缩短30d,其发芽率比直接沙层积高。
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| 关 键 词： | 砂梨种子 休眠原因 解除休眠方法 |
| 文章编号： | 1000-2286（2006）04-0525-04 |
| 收稿时间： | 2006-02-21 |
| 修稿时间： | 2006年2月21日 |
Studies on Causes of Dormancy and Methods for Breaking Dormancy of Sand Pear Seeds |
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| LIN Jing,YANG Qing-song,LI Xiao-gang,YAN Zhi-mei,SHENG Bao-long.Studies on Causes of Dormancy and Methods for Breaking Dormancy of Sand Pear Seeds[J].Acta Agriculturae Universitis Jiangxiensis,2006,28(4):525-528. |
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| Authors: | LIN Jing YANG Qing-song LI Xiao-gang YAN Zhi-mei SHENG Bao-long |
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| Institution: | Horticultural Institute, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China |
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| Abstract: | The major causes of dormancy of sand pear seeds and the major methods for breaking it were studied.The results showed: the major causes were obstacle of seed vessel,seed embryo dormancy and post-maturation;the major methods were treatments of hypothermal stratification and growth regulators;naked layer stratification and sand layer stratification had cosistent effect on relieving seed dormancy;hypothermal stratification with GA_3 500~1 000 mg/L for days could relieve seed dormancy,compared to sand stratification it shortened 30 days,and its germiation percentage was higher than that of sand stratification. |
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| Keywords: | sand pear seeds dormant cause method for breaking dormancy |
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