| 不同种源蒙古栎种子表型性状的多样性 |
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| 引用本文： | 任俊杰,庞新博,刘昭阳,李静雅,张婉莹,尹书乐,王利兵,李迎超.不同种源蒙古栎种子表型性状的多样性[J].浙江农林大学学报,2022,39(6):1221-1228. |
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| 作者姓名： | 任俊杰 庞新博 刘昭阳 李静雅 张婉莹 尹书乐 王利兵 李迎超 |
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| 作者单位： | 1.中国林业科学研究院 林业研究所 国家林业和草原局林木培育重点实验室，北京 1000912.河北省洪崖山国有林场，河北 易县 0742003.北京林淼生态环境技术有限公司，北京 100085 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项(CAFYBB2018ZB001)；“万人计划”青年拔尖人才项目资助 |
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| 摘 要： | 目的 研究不同种源蒙古栎Quercus mongolica种子表型性状多样性，为蒙古栎种质资源收集、评价和利用提供科学依据。 方法 在中国蒙古栎天然分布区选取11个种源采集种子，分别测量种子的种长、种宽、种形指数、单粒重、千粒重5个表型性状。并利用SPSS软件对不同种源的蒙古栎种子进行性状差异性、相关性及主成分分析。 结果 ①不同种源蒙古栎种子的种长、种宽、种形指数、单粒重差异较大，各种源千粒重之间均存在显著差异(P＜0.05)；②不同种源蒙古栎种子的种长与种宽、单粒重、千粒重均存在极显著正相关(P＜0.01)；③不同种源海拔与种宽存在显著负相关(P＜0.05)，与单粒重、千粒重存在极显著负相关(P＜0.01)；④影响种子性状的因素按照重要性从高到低依次为单粒重、千粒重、无霜期、北纬；根据聚类分析结果，可将11个种源划分为4类，分别为Ⅰ、Ⅱ、Ⅲ和Ⅳ类，其中，黑龙江省黑河市、辽宁省本溪市、辽宁省抚顺市聚为Ⅰ类，单粒重和千粒重显著高于其他类别种源(P＜0.05)，为最优种源。 结论 蒙古栎种子表型性状随地理梯度变异明显，整体呈从东北—西南种源质量逐渐下降的趋势，单粒重和千粒重可以作为快速筛选种源优良与否的优先筛选指标。图1表5参37
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| 关 键 词： | 蒙古栎 种源 表型性状 多样性 生态因子 |
| 收稿时间： | 2022-01-21 |
Diversity of phenotypic characters of Quercus mongolica seeds from different provenances |
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| REN Junjie,PANG Xinbo,LIU Zhaoyang,LI Jingya,ZHANG Wanying,YIN Shule,WANG Libing,LI Yingchao.Diversity of phenotypic characters of Quercus mongolica seeds from different provenances[J].Journal of Zhejiang A&F University,2022,39(6):1221-1228. |
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| Authors: | REN Junjie PANG Xinbo LIU Zhaoyang LI Jingya ZHANG Wanying YIN Shule WANG Libing LI Yingchao |
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| Affiliation: | 1.Key Laboratory of Tree Breeding and Cultivation, National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China2.Hongya Mountain State-Owned Forest Farm of Hebei Province, Yixian 074200, Hebei, China3.Beijing Lin-miao Eco-environment Technology Co., Ltd., Beijing 100085, China |
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| Abstract: | Objective The objective is to study the diversity of phenotypic characters of Quercus mongolica seeds from different provenances, so as to provide scientific basis for collection, evaluation and utilization of Q. mongolica germplasm resources. Method Seeds were collected from 11 provenances in natural distribution areas of Q. mongolica in China and 5 phenotypic characters were measured, including seed length, seed width, seed shape index, single grain weight, and thousand grain weight. SPSS software was used to analyze the character difference, correlation and principal component of Q. mongolica seeds from different provenances. Result (1) Seed length, seed width, seed shape index and single seed weight varied greatly among different provenances, and there were significant differences (P＜ 0.05) in thousand grain weight among different provenances. (2) There was a significant positive correlation (P＜0.01) between seed length and seed width, single grain weight and thousand grain weight among different provenances. (3) There was a significant negative correlation (P＜ 0.05) between altitude and seed width, and a very significant negative correlation (P＜0.01) with single grain weight and thousand grain weight. (4) According to the importance, the factors affecting seed characteristics in descending order were single grain weight, thousand grain weight, frost-free period and north latitude. According to the results of cluster analysis, the 11 provenances can be divided into 4 categories: Ⅰ, Ⅱ, Ⅲ and Ⅳ respectively. Among them, the provenances from Heihe City in Heilongjiang Province, Benxi City and Fushun City in Liaoning Province were grouped into Class Ⅰ, whose single grain weight and thousand grain weight were significantly higher (P＜0.05) than those of other provenances, and they were the best provenances. Conclusion The phenotypic characters of Q. mongolica seeds vary significantly with geographical gradient, and the quality of provenances decreases gradually from northeast to southwest. Single grain weight and thousand grain weight can be used as the priority screening index for rapid screening of provenances. Ch, 1 fig. 5 tab. 37 ref.] |
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