盐和干旱胁迫对芥菜型油菜种子萌发及幼苗生长的影响

doi:10.6048/j.issn.1001-4330.2018.10.007

新疆农业科学 ›› 2018, Vol. 55 ›› Issue (10): 1819-1828.DOI: 10.6048/j.issn.1001-4330.2018.10.007

盐和干旱胁迫对芥菜型油菜种子萌发及幼苗生长的影响

热孜亚·麦麦提¹,顾元国²,李强²,王娟²,侯献飞²,贾东海²,买买提·伊明²

1.新疆大学生命科学与技术学院新疆生物资源基因工程重点实验室,乌鲁木齐 830046;
2.新疆农业科学院经济作物研究所,乌鲁木齐 830091

发布日期:2019-01-24
通信作者: 顾元国(1981-),男,助理研究员,研究方向为油料作物遗传育种,(E-mail)86322533@qq.com
李强(1980-),男,新疆人,副研究员,研究方向为油料作物育种与栽培,(E-mail)lq19820302@126.com
作者简介:热孜亚·麦麦提(1993-),女,新疆人,硕士研究生,研究方向为生物化学和分子生物学,(E-mail)1850175270@qq.com
基金资助:
国家重点研发计划项目“长江上游及北方油菜高产优质适宜机械化新品种培育”(2018YFD0100500);新疆农科院青年基金“甘蓝型油菜OguCMS恢复系抗根肿病分子标记开发及遗传转育”(xjnkq-2018001)

Effects of NaCl and Mannitol Stress on Seed Germination and Seedling Growth of Rape Seed (Brassica juncea L.)

Reziya Meimeiti¹,WANG Juan²,GU Yuan-guo²,LAN Hai-yan¹

1.Xinjiang Key Laboratory of Biological Resources and Genetic Engineering / College of Life Science and Technology, Xinjiang University, Urumqi 830046, China;
2 . Research Institute of Cash Crops, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China

Published:2019-01-24
Correspondence author: Gu Yuan-guo(1981-), male, Qitai, Xinjiang, Assistant researcher, research field: Genetics, breeding and cultivation of rape,(E-mail)86322533@qq.com
Li Qiang(1980-)male, Xinjiang, Associate Research Fellow, Oil crop breeding and cultivation, (E-mail) lq19820302@126.com

摘要/Abstract

摘要： 【目的】 研究三种油菜种子萌发和幼苗生长对盐胁迫和干旱胁迫的响应,对不同种盐、旱胁迫油菜的耐受性提供科学参考。【方法】 以三种芥菜型油菜为材料,通过不同浓度的NaCl和甘露醇处理,研究其对三种芥菜型油菜种子萌发和幼苗生长的影响。【结果】 (1)在盐和旱胁迫中,随着NaCl和甘露醇浓度的升高,其种子发芽率、根长和株高均呈下降趋势。NaCl (<150 mmol/L)和甘露醇(<200 mmol/L)时,三种芥菜型油菜种子发芽率跟对照组没有显著差异;NaCl (≥200 mmol/L)和甘露醇(≥300 mmol/L)时,显著抑制了其种子萌发,CBJ004-34油菜保持了78%的发芽率。(2)NaCl (<150mmol/L) 和甘露醇(<100 mmol/L)时, Xinyou9 和CBJ004-34 油菜幼苗的根长跟对照没有显著差异;NaCl (<100 mmol/L)时,促进新油9号油菜幼苗根的伸长。【结论】 新油9号和CBJ004-34油菜种子的耐盐性和耐旱性好,该研究为选育油菜耐盐耐旱材料提供了参考依据。

关键词: 芥菜型油菜; 盐胁迫; 干旱胁迫; 种子萌发; 根长

Abstract: 【Objective】 This project aims to carry out an evaluation of responses of seed germination and seedling growth of three cultivars of Brassica juncea to salt stress and drought stress in order to provide scientific reference for the tolerance of rape to different salt and drought stress.【Method】 Three different cultivars of Brassica juncea were treated with different concentrations of NaCl and Mannitol to study the effects on seed germination and seedling growth of three kinds of Brassica juncea.【Result】 (1) With the increase of NaCl and Mannitol concentration, the seed germination rate, plant height and seedling root length of three cultivars decreased. SG of the three cultivars at lower concentrations of NaCl (<150 mmol/L) and Mannital (<200 mmol/L ) was similar to those of the control (SG 0 mmol/L); SG at higher concentrations of NaCl (≥200 mmol/L) and Mannital (≥300 mmol/L) significantly decreased, but SG of CBJ004-34 still exceeded 78%. (2)At lower concentrations of NaCl (<150 mmol/L) and Mannital (<100 mmol/L), the seedling root length of Xinyou 9 and CBJ004-34 were similar to that of the control. At lower concentration of NaCl (<100 mmol/L), the seedling root length of Xinyou 9 was improved.【Conclusion】 These results showed that Xinyou 9 and CBJ004-34 have good salt tolerance and drought tolerance, which has provided a reference for breeding rape salt and drought tolerant materials.

Key words: Brassica juncea; salt stress; drought stress; seed germination; root length

中图分类号:

S565.4

热孜亚·麦麦提,顾元国,李强,王娟,侯献飞,贾东海,买买提·伊明. 盐和干旱胁迫对芥菜型油菜种子萌发及幼苗生长的影响[J]. 新疆农业科学, 2018, 55(10): 1819-1828.

Reziya Meimeiti,WANG Juan,GU Yuan-guo,LAN Hai-yan. Effects of NaCl and Mannitol Stress on Seed Germination and Seedling Growth of Rape Seed (Brassica juncea L.)[J]. Xinjiang Agricultural Sciences, 2018, 55(10): 1819-1828.

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盐和干旱胁迫对芥菜型油菜种子萌发及幼苗生长的影响

Effects of NaCl and Mannitol Stress on Seed Germination and Seedling Growth of Rape Seed (Brassica juncea L.)

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