| 小桐子不同产地种子性状及苗期生长差异研究 |
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| 引用本文： | 栗宏林,张志翔,张鑫.小桐子不同产地种子性状及苗期生长差异研究[J].干旱区资源与环境,2010(2). |
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| 作者姓名： | 栗宏林 张志翔 张鑫 |
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| 作者单位： | 北京林业大学生物科学与技术学院; |
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| 基金项目： | 国家十一五科技支撑计划“农林生物质工程“子课题”生物质资源黄连木高效培育技术研究”资助 |
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| 摘 要： | 对小桐子22个产地种子性状及苗期生长差异进行研究,共测定种子千粒重、纵径、横径、侧径、纵横径比、出苗率、苗高、地径等8个指标。分析表明不同产地小桐子种子形态、出苗率及苗高存在显著差异,但地径无显著差异。种子大小具有一定的经向变异。种子大小及千粒重分别受产地的年均温及降雨量影响。种子形态及千粒重与苗高、地径等生长特征无相关性,但种子千粒重对出苗率有较大的影响。根据种子形态特征将22个产地种子性状自然分布区初步划分为三个组群。结果表明:小桐子种子及苗期生长产地间存在一定分化,具有种源选择潜力;不能仅依据种子形态对幼苗生长做预测;较大区域内种子调拨及生产潜力大。研究结果对于小桐子种源选择及种子调拨生产等具有重要参考价值。
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| 关 键 词： | 小桐子 不同产地 种子性状 苗期生长 |
Study on seed morphology and seedling growth of Jatropha curcas L. from different provenances |
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| LI Honglin,ZHANG Zhixiang,ZHANG Xin.Study on seed morphology and seedling growth of Jatropha curcas L. from different provenances[J].Journal of Arid Land Resources and Environment,2010(2). |
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| Authors: | LI Honglin ZHANG Zhixiang ZHANG Xin |
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| Institution: | College of Biological Science and Biotechnology;Beijing Forestry University;Beijing 10083;P.R.China |
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| Abstract: | The seed morphology and seedling growth of Jatropha curcas L.from 22 different provenances were studied.Eight indexes were investigated,including thousand seed weight,seed length,width,lateral diameter,seed length and width ratio,seedling height,ground diameter and emergence rate.The results showed that seed morphology,emergence rate and seedling height had significant variation among locations,while no significant differences were among ground diameter.The seed morphology showed longitudinal change.Seed em... |
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| Keywords: | Jatropha curcas L different provenances seed morphology seedling growth |
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