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| 杂草稻落粒粳种子的耐冷性评价 | |
| 引用本文： | 孙兴强,周勇军,陆永良,陈丽娟,余柳青.杂草稻落粒粳种子的耐冷性评价[J].杂草科学,2011,29(2):54-56. |
| 作者姓名： | 孙兴强 周勇军 陆永良 陈丽娟 余柳青 |
| 作者单位： | 1. 云南农业大学农学与生物技术学院,云南昆明,650201;中国水稻研究所,浙江杭州,310006 2. 中国水稻研究所,浙江杭州,310006 3. 云南农业大学农学与生物技术学院,云南昆明,650201 |
| 基金项目： | 国家自然科学基金，现代水稻产业技术体系专项，转基因生物新品种培育重大专项课题 |
| 摘 要： | 采用低温处理方法评价了杂草稻落粒粳（Orayza sativaL.）种子的耐冷潜力。浸种0~48 h,落粒粳种子平均含水量为17.038%,显著低于栽培稻春江11的20.533%和赣早籼的20.180%,落粒粳颖壳具有比两种栽培稻更强的水分阻隔能力。在相同含水量条件下,经过低温-20℃处理3 h和28℃条件下培养4 d的落粒粳种子发芽率显著高于春江11和赣早籼,落粒粳种子具有更强的耐冷能力。 |
| 关 键 词： | 杂草稻 落粒粳（Oryza sativa L.） 种子 耐冷性 |
Evaluation of The Cold Tolerance for Weedy Rice Luolijing (Oryza sativa L.) Seeds |
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| Sun Xing-qiang,Zhou Yong-jun,Lu Yong-liang,Chen Li-juan,Yu Liu-qing.Evaluation of The Cold Tolerance for Weedy Rice Luolijing (Oryza sativa L.) Seeds[J].Weed Science,2011,29(2):54-56. | |
| Authors: | Sun Xing-qiang Zhou Yong-jun Lu Yong-liang Chen Li-juan Yu Liu-qing |
| Institution: | 1.College of Agronomy and Biotechnology,Yunnan Agricultural University,Kunming 650201,China;2.China National Rice Research Institute,Hangzhou 310006,China) |
| Abstract: | The cold tolerance potential of weedy rice Luolijing（Oryza sativa L.） seeds has been evaluated with low temperature treatment.The average water content of Luolijing seeds reached to 17.038% after water soaking for 0~48 h which could be lower than 20.533% of Chuenjiang 11 and 20.180% of Ganzaoxian significantly.It indicated that the hulls of Luolijing caryopses presented a stronger capacity for water obstruction than that of the two cultivated rice varieties.Under the similar condition with the same water contents of seeds,the germination rate of Luolijing seeds could be significantly higher than that of Chunjiang 11 and Ganzaoxian by a-20 ℃ pretreatment for 3 hand germination at 28℃ for 4 days.It showed that Luolijing seeds possessed more potential for cold tolerance than that of the two cultivated rice varieties. |
| Keywords: | weedy rice Luolijing（Oryza sativa L ） seeds cold tolerance |
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