[1]谢英赞,王朝英,马立辉,等. 不同种源区桢楠种子形态、发芽特征及幼苗生长情况研究[J].西北林学院学报,2017,32(4):92-99.[doi:10.3969/j.issn.1001-7461.2017.04.16]
 XIE Ying-zan,WANG Chao-ying,MA Li-hui,et al. Seed Traits and Seedling Growth of Phoebe zhennan from Different Provenances[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2017,32(4):92-99.[doi:10.3969/j.issn.1001-7461.2017.04.16]
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 不同种源区桢楠种子形态、发芽特征及幼苗生长情况研究()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第32卷
期数:
2017年第4期
页码:
92-99
栏目:
出版日期:
2017-07-31

文章信息/Info

Title:
 Seed Traits and Seedling Growth of Phoebe zhennan from Different Provenances
文章编号:
1001-7461(2017)04-0092-08
作者:
 谢英赞1王朝英2马立辉1杨琼1陈本文1方文12*
 (1.重庆市林业科学研究院,重庆 400036;2.西南大学 生命科学学院 三峡库区生态环境教育部重点实验室,重庆 400715)
Author(s):
 XIE Ying-zan1WANG Chao-ying2MA Li-hui12YANG Qiong1CHEN Ben-wen1FANG Wen12*
 (1.Forestry Science Research Institute of Chongqing,Chongqing 400036,China; 2.College of Life Science,Key Laboratory of the Three Gorges Reservoir Regions Eco-Environment,Ministry of Education,Southwest University,Chongqing 400715,China)
关键词:
 桢楠种源种子幼苗生长特性重庆
Keywords:
Phoebe zhennan provenance seed seedling growth characteristic Chongqing
分类号:
S792.24
DOI:
10.3969/j.issn.1001-7461.2017.04.16
文献标志码:
A
摘要:
 为了提高重庆地区桢楠育苗质量,加快桢楠生长速率,缩短成材年限,提高楠木经营效益,寻找适宜重庆地区的楠木优良种源,通过对湖北、四川和重庆3省(市)11个种源地桢楠的种子形态特征、发芽特性和在重庆地区的苗期生长表现来判定种源的优劣。分别检测种子千粒重、纵径、横径、发芽率、发芽指数、发芽势和种子活力指数,并对11个不同种源桢楠苗的生长情况进行分析比较。结果表明,永川种源桢楠种子纵径(1.23 cm)、横径(0.73 cm)最大,千粒重最重(351.29 g),发芽率(90%)、发芽势(43.00)以及种子活力指数(7.75)最高,1、2年生幼苗株高(39.25、86.25 cm)、基茎(0.360、0.838 cm)和生物量积累(15.35、62.77 g)最大;峨眉种源桢楠种子纵径(0.98 cm)最小、横径(0.59 cm)较小,千粒重最轻(285.50 g),1、2年生幼苗株高(23.00、70.00 cm)、基茎(0.253、0.662 cm)和生物量积累(11.03、45.35 g)最小,显著<永川种源,其上各指标分别仅为永川的79.67%、80.82%、81.27%、58.60%、81.16%、70.28%、79.00%、71.86%和72.25%。永川种源桢楠在重庆生长表现最优,可作为重庆桢楠育苗的首选种源;宜昌、大足、江津、长宁种源整体表现较好,可作为备选种源;峨眉、都江堰种源则整体表现相对较差,不建议作为重庆地区桢楠育苗的选择种源。
Abstract:
 In order to raise the operation benefits of Phoebe zhennan by improving the seedling quality and accelerating the growth rate to shorten the time of timber production in Chongqing municipality,seeds of P.zhennan were collected from 11 provenances in Hubei,Sichuan,and Chongqing.Relative indices of the seeds were measured for the evaluation of the seed quality.It was found that the seeds from Yongchuan had the maximum longitudinal diameter (1.23 cm),transverse diameter (0.73 cm),thousand seed weight (351.29 g),germination rate (90%),germination potential (43.00) and seed vigor index (7.75).Its 1- and 2-year-old seedlings also had the maximum height (39.25 and 86.25 cm,for 1- and 2-year-seedlings,respectively),basal diameter (0.36 and 0.838 cm,respectively) and biomass accumulation (15.35 and 62.77 g,respectively).While the seeds from Emei had the minimum longitudinal diameter (0.98 cm),transverse diameter (0.59 cm) and thousand seed weight (285.5 g).Its 1- and 2-year-old seedlings also had the minimum height (23 and 70 cm,respectively),basal diameter (0.253 and 0.662 cm,respectively) and biomass accumulation (11.03 and 45.35 g,respectively),significantly lower than those of the seeds from Yongchuan,the percentages of the indices mentioned above accounted for those from Yongchuan were 79.67%,80.82%,81.27%,58.6%,81.16%,70.28%,79%,71.86%,and 72.25%,respectively.Seeds from Yongchuan showed the best growth in Chongqing,which could be selected as the finest provenance introducing to Chongqing.Seeds from Yichang,Jiangjin,Dazu and Changning had relatively good performance,and could be treated as the second choice of seed resource.Seeds from Emei and Dujiangyan exhibited poor performance,and would be not recommended.

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备注/Memo

备注/Memo:
 收稿日期:2016-11-14修回日期:2017-01-05
基金项目:楠木类种源试验及优良个体选择研究;重庆市桢楠高效培育技术(2016YFD0600603-3)。
作者简介:谢英赞,男,工程师,研究方向:植物生理生态和林木遗传育种等。E-mail:449080978@qq.com
*通信作者:方文,男,高级工程师,研究方向:生态学、森林培育和林木遗传育种等。E-mail:66967661@qq.com
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