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| 不同采种期对梓树种子品质的影响 | |
| 引用本文： | 李平英,王军辉,董菊兰,于永民,马建伟,张宋智,师春娟,韩云花.不同采种期对梓树种子品质的影响[J].西北林学院学报,2011,26(5):91-95,120. |
| 作者姓名： | 李平英 王军辉 董菊兰 于永民 马建伟 张宋智 师春娟 韩云花 |
| 作者单位： | 1. 甘肃省小陇山林业实验局 林业科学研究所，甘肃 天水 741022;中国林业科学研究院 林业研究所 国家林业局林木培育重点实验室，北京 100091 2. 中国林业科学研究院 林业研究所 国家林业局林木培育重点实验室,北京,100091 3. 甘肃省小陇山林业实验局 林业科学研究所,甘肃 天水,741022 |
| 基金项目： | “十一五”国家科技支撑课题“楸树和水曲柳珍贵用材林培育关键技术研究与示范”(2006BAD24B08); 农业科技成果转化项目“珍贵用材树种楸树优良新品种的中试与示范(2008GB24320414)” |
| 摘 要： | 通过对梓树不同时期采集的楸吊、种子特征的观测及种子发芽试验,研究了不同采种期梓树种子的品质和种子活力,为合理确定梓树种子的采收期提供科学依据。研究结果表明,随采种期的变化,梓树楸吊的粗度、鲜重、出种率、果形指数发生规律性变化。不同采种期梓树种子的发芽率、发芽势差异不显著,但种子活力指数、发芽指数随采种期的变化差异极显著。梓树在楸吊绿色时就具备了发芽能力,但种子活力指数很低。当种子干物质积累停止时,种子活力水平还有明显提高,种子存在一定的后熟期。11月中下旬采集的梓树楸吊出种率高、种子活力指数最大,种子品质最好,是适宜的采种期,采种时间越提前,品质越差。 |
| 关 键 词： | 梓树 采种期 种子品质 |
Effect of Different Collecting Times on Seed Quality of Catalpa ovata |
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| LI Ping-ying,WANG Jun-hui,DONG Ju-lan,YU Yong-min,MA Jian-wei,ZHANG Song-zhi,SHHI Chun-juan,HAN Yun-hua.Effect of Different Collecting Times on Seed Quality of Catalpa ovata[J].Journal of Northwest Forestry University,2011,26(5):91-95,120. | |
| Authors: | LI Ping-ying WANG Jun-hui DONG Ju-lan YU Yong-min MA Jian-wei ZHANG Song-zhi SHHI Chun-juan HAN Yun-hua |
| Institution: | LI Ping-ying1,2,WANG Jun-hui2,DONG Ju-lan1,YU Yong-min1,MA Jian-wei1,ZHANG Song-zhi1,SHI Chun-juan1,HAN Yun-hua1(1.Research Institute of Forestry of Xiaolongshan,Tianshui,Gansu 741022,China,2.Research Institute of Forestry of,Chinese Academ of Forestry,Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Beijing 100091,China) |
| Abstract: | The quality and vigor of Catalpa ovata seeds collected from different time periods were studied through examining the seed morphology and germination to determine suitable time of collection.Along with the change of collecting time,regularities were observed in seed thickness,fresh weight,seeding ratio,and seed form index.There were no significant differences in germination rate and potential among the seeds collected from different time periods.However,significant differences were observed in seed vigor in... |
| Keywords: | Catalpa ovata seed collecting time seed quality |
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