干旱区生态环境知识资源中心(Arid): 温周期、贮藏时间和盐分对短毛柽柳种子萌发的影响

Arid

	温周期、贮藏时间和盐分对短毛柽柳种子萌发的影响
其他题名	Effects of Thermoperiod,Storage Time and Salinity on Germination of Tamarix karelinii Seeds
	王喜勇 1; 蔡丹红 2; 严成 3; 魏岩 1
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2017
卷号	34 期号:2 页码:364-369
中文摘要	短毛柽柳(Tamarix karelinii)是分布于盐渍化沙地和重盐碱地的灌木。为了阐明短毛柽柳种子的萌发特性,设置不同的温周期、储藏时间和盐分梯度,采用室内控制实验研究这些因子对种子萌发的影响。结果表明:① 短毛柽柳种子在4个温周期中均具有高的萌发率,并且温周期温度越高,种子的萌发速率越快。② 室温贮藏1个月显著提高种子的萌发速率,在贮藏6个月内,种子的最终萌发率都能达到100%。③ ≤0. 8 mol·L~(- 1)的NaCl溶液对种子的最终萌发率无显著影响,而≥1. 0 mol·L~(- 1)的溶液则抑制种子的萌发,且随着浓度的增加,种子的最终萌发率呈下降趋势,直至为0。将1. 0 ~ 4. 0 mol·L~(- 1)溶液中没有萌发的种子,转移至蒸馏水继续培养后,仍有71. 67% ~ 28. 00%的种子恢复萌发率,表明种子具有较强的耐盐性。对短毛柽柳种子萌发特性的研究,为短毛柽柳的种苗培育提供基础资料。
英文摘要	Tamarix karelinii is a shrub species growing in sand desert and seriously saline or alkaline soil. In order to reveal its seed germination better,the experiments were conducted to determine the effects of thermoperiod, storage time and salinity on seed germination. Freshly matured seeds were placed in incubators with 12-hour photoperiods and 12-hour thermoperiods of 5/15 ℃,10/20 ℃,15/25 ℃ and 20/30 ℃ (dark/light = 12/12 hours) . Seeds were stored at naturally uctuating temperature in laboratory. On the rst day of 1 month and 6 months after collection, the seeds were placed in incubators at 15/25 ℃ (dark/light = 12/12 hours) . Effects of 0. 0,0. 05,0. 1, 0. 2,0. 4,0. 6,0. 8,1. 0,1. 2,1. 6,2. 0 and 4. 0 mol·L~(- 1) NaCl solution on seed germination were tested at 15/25 ℃ (dark/light = 12/12 hours) . After an incubation for 14 days,the un-germinated seeds were transferred into distilled water and incubated to determine the seed re-germination rate. The results are as follows: ① Seeds germinated quickly with a high germination rate at four thermoperiods from 5/15 ℃ to 20/30 ℃,and there were not significant differences in germination rates among thermoperiods. However,the longer the thermoperiod was, the faster the seed germination would be; ② There was a significant increase of seed germination rate after a storage time for 1 month,but there was no change of seed germination rate when seeds were exposed in air for 6 months; ③ Seed germination was not affected by NaCl at concentration below 0. 8 mol·L~(- 1). When the NaCl concentration was increased from 1. 0 mol·L~(- 1) to 4. 0 mol·L~(- 1),the seed germination was inhibited,the seed germination rate was decreased,and the seeds did not germinate in NaCl concentration of 4. 0 mol·L~(- 1). When the un-germinated seeds in NaCl concentrations of 1. 0 - 4. 0 mol·L~(- 1) were transferred into distilled water to incubate,the 71. 67 - 28. 00% seeds could re-germinate,which revealed that T. karelinii seeds have strong salt tolerance. However,the final germination rates were lower at salinities from 1. 2 mol·L~(- 1) to 4. 0 mol·L~(- 1) than those in distilled water, which revealed that a portion of the NaCl-treated seeds may lose their germination ability. This research may not only reveal the adaptive strategies of T. karelinii seeds,but also could provide the basic data for cultivation of T. karelinii seedlings.
中文关键词	短毛柽柳(Tamarix karelinii) ; 温周期 ; 贮藏时间 ; 盐分 ; 种子萌发
英文关键词	Tamarix karelinii thermoperiod storage time salinity seed germination
语种	中文
国家	中国
收录类别	CSCD
WOS类目	FORESTRY
WOS研究方向	Forestry
CSCD记录号	CSCD:5946659
来源机构	中国科学院新疆生态与地理研究所 ; 新疆农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235981
作者单位	1.新疆农业大学草业与环境科学学院, 新疆草地资源与生态重点实验室, 乌鲁木齐, 新疆 830052, 中国; 2.浙江省温岭市松门中学, 温岭, 浙江 317500, 中国; 3.中国科学院新疆生态与地理研究所, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	王喜勇,蔡丹红,严成,等. 温周期、贮藏时间和盐分对短毛柽柳种子萌发的影响[J]. 中国科学院新疆生态与地理研究所, 新疆农业大学,2017,34(2):364-369.
APA	王喜勇,蔡丹红,严成,&魏岩.(2017).温周期、贮藏时间和盐分对短毛柽柳种子萌发的影响.干旱区研究,34(2),364-369.
MLA	王喜勇,et al."温周期、贮藏时间和盐分对短毛柽柳种子萌发的影响".干旱区研究 34.2(2017):364-369.