|Table of Contents|

Response of Seed Germination to Salt and Drought Stress in Suaeda rigida(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年04
Page:
63-66
Research Field:
Publishing date:

Info

Title:
Response of Seed Germination to Salt and Drought Stress in Suaeda rigida
Author(s):
HAN Zhan-jiang; CHENG Long; YANG Zhao-ping; ZHANG Ling; SHI Qiang
（College of Plant Science，Tarim University,Xinjiang Production and Construction Corps Key Laboratory of Protection and Utilization of Biological Resources in Tarim Basin，Alar，Xinjiang 843300)
Keywords:
Suaeda rigida Kung et G.L.Chu; salt stress; drought stress; germination characteristics
PACS:
-
DOI:
10.11937/bfyy.201504015
Abstract:
Taking Suaeda rigida Kung et G.L.Chu seed as materials ， effects of different treatments of NaCl and PEG （ molecular weight 6000) on seed germination characteristics were studied.The results showed that low concentration of salt (NaCl concentration 100 mmol/L) shorten significantly germination process of Suaeda rigida ， whereas had no significant effect on its final germination rate.Medium or high salt concentration (NaCl concentrations were 200—500 mmol/L) prolonged significantly average germination time and reduced final germination rate of Suaeda rigida .The mild drought (osmotic potential was -0.2 MPa) promoted significantly seed germination of Suaeda rigida ， shorten average germination time,and reached quickly final germination rate to complete germination process.And its final germination rate was the highest,99%,significantly higher than the control.The moderate and severe drought (osmotic potentials were at range of -1.2 to -0.4 MPa) inhibited significantly seed germination of Suaeda rigida .As external osmotic potential reducing,final germination rate of Suaeda rigid seed showed a significant downward trend,average germination time was prolonged,reached final germination rate slowly ， and time for completing germination process was also prolonged.When the external osmotic potential was -1.2 MPa,its final germination rate was the lowest,only 28%.The threshold and limit of salt tolerant (NaCl) in Suaeda rigida seed were 394.30 mmol/L and 894.30 mmol/L ， respectively.While the threshold and limit of drought tolerant (PEG-6000) in Suaeda rigida seed were -0.88 MPa and -1.79 MPa ， respectively. Suaeda rigida seed showed a higher salt and drought tolerance at germination stage.

References:

[1]Stepien P,Klbus G.Water relations and photosynthesis in Cucumis sativus L.leaves under salt stress[J].Biologia Plantarum,2006,50(4)：610-616.  [2]谭永芹,柏新富,侯玉平,等.土壤盐分对三角叶滨藜抗旱性能的影响[J].生态学报,2013,33(23)：7341-7347. [3]张志刚,尚庆茂,王立浩,等.亚适温、弱光照及盐胁迫下辣椒叶片活性氧代谢特征[J].园艺学报,2009,36(11)：1603-1610. [4]韩冰,孙锦,郭世荣,等.钙对盐胁迫下黄瓜幼苗抗氧化系统的影响[J].园艺学报,2010,37(12)：1937-1943. [5]段慧荣,李毅,马彦军.PEG胁迫对沙冬青种子萌发过程的影响[J].水土保持研究,2011,18(3)：221-225. [6]孔宪武,朱格麟,简焯坡,等.中国藜科植物[J].植物分类学报,1978,16(1)：99-123. [7]中国植物志编辑委员会.中国植物志[M].25卷.2分册.北京：科学出版社,1979. [8]冯缨,严成,尹林克.新疆植物特有种及其分布[J].西北植物学报,2003,23(2)：263-273. [9]Zhao K,Song J,Feng G,et al.Species，types，distribution，and economic potential of halophytes in China[J].Plant Soil,2011,342(1-2)：495-509. [10]柳维扬,杨赵平,高艳红,等.塔里木盆地特有种硬枝碱蓬适盐性与土壤养分初步研究[J].塔里木大学学报,2009,21(4)：18-21. [11]杨赵平,段黄金,黄文娟.塔里木盆地硬枝碱蓬群落物种组成和生物多样性[J].草业科学,2011,28(12)：2186-2189. [12]安桂香,曾凡江,刘波,等.胡杨种子出苗对沙埋和供水条件的响应[J].中国沙漠,2011,31(2)：436-441. [13]王海珍,韩路,贾文锁.胡杨(Populus euphraticu)与灰胡杨(Populus pruinosa)种子萌发对不同盐类胁迫的响应[J].中国沙漠,2013,33(3)：743-750. [14]安永平,强爱玲,张媛媛,等.渗透胁迫下水稻种子萌发期特性及抗旱性鉴定指标研究[J].植物遗传资源学报,2006,7(4)：421-426. [15]贺慧,燕玲.5种荒漠植物种子萌发特性及其吸水特性的研究[J].干旱区资源与环境,2008(1)：184-188. [16]Fouzia B A,Janis S M.Germination and seedling survival of Argan(Argan spinosa) under experimental saline condition[J].Journal of Arid Environments,2001,49：533-540. [17]焦保峰,崔玲,张悦,等.混合盐胁迫对鹰嘴豆种子萌发的影响[J].新疆农业大学学报,2011,34(3)：218-221. [18]王桔红,陈文.黑果枸杞种子萌发及幼苗生长对盐胁迫的响应[J].生态学杂志,2012,31(4)：804-810. [19]高瑞如,赵瑞华,张双风,等.盐分和温度对盐节木种子萌发的影响[J].西北植物学报,2007,27(11)：2281-2285.

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Last Update: 2015-04-09