[1]宿昊,申耀荣,蔡靖,等. 不同种源红桦种子的萌发特性[J].西北林学院学报,2021,36(3):109-114.[doi:10.3969/j.issn.1001-7461.2021.03.16]
　SU Hao,SHEN Yao-rong,CAI Jing,et al. Germination Characteristics of Betula albo-sinensis Seeds from Different Provenances[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2021,36(3):109-114.[doi:10.3969/j.issn.1001-7461.2021.03.16]
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 不同种源红桦种子的萌发特性()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第36卷
期数:
2021年第3期
页码:
109-114
栏目:
出版日期:
2021-05-31

文章信息/Info

Title:
 Germination Characteristics of Betula albo-sinensis Seeds from Different Provenances
文章编号:
1001-7461(2021)03-0109-06
作者:
 宿昊1; 申耀荣2; 蔡靖1; 3; 姜在民4*; 杨彩虹5; 徐秀琴5
 （1.西北农林科技大学 林学院，陕西 杨陵 712100；2.甘肃省小陇山林业实验局洮坪林场，甘肃 陇南 742200；3.陕西秦岭森林生态系统国家野外科学观测研究站，陕西 杨陵 712100；4.西北农林科技大学 生命学院，陕西 杨陵 712100；5.宁夏固原市六盘山林业局，宁夏 固原 756401）
Author(s):
 SU Hao1; SHEN Yao-rong2; CAI Jing1; 3; JIANG Zai-min4*; YANG Cai-hong5; XU Xiu-qin5
 (1.College of Forestry,Northwest A&F University,Yangling 712100,Shaanxi,China; 2.Taoping Forest Farm,Xiaolongshan Forestry Experimental Bureau,Longnan 742200,Gansu,China; 3.Qinling National Forest Ecosystem Research Station,Yangling 712100,Shaanxi,China; 4.College of Life Sciences,Northwest A&F University,Yangling 712100,Shaanxi,China;5.Liupanshan Forestry Bureau,Guyuan 756401,Ningxia,China)
关键词:
 ; 不同种源; 红桦种子; 萌发; 温度; 光照; 相关性分析
Keywords:
 ; different provenance;  Betula albo-sinensis seed;  germination;  temperature;  light;  correlation analysis
分类号:
S722.5
DOI:
10.3969/j.issn.1001-7461.2021.03.16
文献标志码:
A
摘要:
 以陕西、宁夏、甘肃、青海4省7个种源地红桦种子为对象，测定各种源地红桦种子的千粒重、形态特征及在不同温度（30℃、25℃、20℃、15℃）和不同光照（无光照0 h、半光照/半黑暗12 h/12 h、全光照24 h）条件下的萌发率与萌发特性，并与千粒重、环境因子进行相关性分析。结果表明，各种源千粒重大小为：凤县＞泾源＞宁陕＞礼县＞洛南＞太白＞湟中，洛南县、太白县和湟中县红桦种子的千粒重与其他种源存在显著差异；25℃为红桦种子最适萌发温度。在15℃下，各种源红桦种子几乎不萌发。25℃下，各种源红桦种子萌发率显著高于其他温度；光照和光照时长都可以显著提高红桦种子的萌发率。全光照（24 h）下各种源红桦种子萌发率显著高于半光照/半黑暗（12 h/12 h）和全黑暗（0 h）条件；红桦种子萌发率与种子的千粒重呈显著正相关（P=0.046＜0.05）,与种源的海拔呈极其显著的负相关（P=0.004＜0.01）；红桦种子萌发率与种源的年日照时长（P=0.064＞0.05）和年降雨量（P=0.93＞0.05）都没有相关性。
Abstract:
Betula albo-sinensis seeds from seven provprovenances in Shaanxi,Ningxia,Gansu and Qinghai provinces were used as research objects to determine the thousand-grain weight (TGW),morphological characteristics,and germination characteristics under different temperatures (30,25,20,and 15℃) and different light conditions (no light 0 h,semi-light/semi-dark 12 h/12 h,full light 24 h).The correlation between germination rate,TGW and environmental factors were analyzed.The TGW of the seeds from different provenances was in the order of Fengxian＞Jingyuan＞Ningshan＞Lixian＞Luonan＞Taibai＞Huangzhong.The values of TGW of the seeds from Luonan,Taibai and Huangzhong were significant different with those from other provenances.At the temperature of 15℃,almost all the seeds did not germinate.At 25℃,the germination rate of seeds were significantly higher than other temperatures,indicating that the optimal temperature for the germination of B.albo-sinensis seeds was 25℃.Illumination and long time period illumination could significantly increase the seeds germination rate.Under the full light (24 h) condition,the germination rate was significantly higher than that of semi-light/semi-dark (12 h/12 h) and no light (0 h) conditions.The germination rate was significantly and positively correlated with the TGW (P=0.046<0.05).The seed germination rate was significantly and negatively correlated with the elevation (P=0.004<0.01).No correlation was found between the germination rate and the annual sunshine duration (P=0.064>0.05) and annual rainfall (P=0.93>0.05).

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备注/Memo

备注/Memo:
 收稿日期：2019-04-11修回日期：2021-03-09
基金项目：国家重点研发计划：红桦高效培育技术研究（2017YFD0600603-02）。
作者简介：宿昊。研究方向：森林植物。E-mail:suhao1992@126.com
*通信作者：姜在民，教授，硕士生导师。研究方向：植物生物与生理学。E-mail:jiangzmz@163.com
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