Salt Resistance of 10 Grasses at Germination Stage

doi:10.6048/j.issn.1001-4330.2021.02.016

Xinjiang Agricultural Sciences ›› 2021, Vol. 58 ›› Issue (2): 342-351.DOI: 10.6048/j.issn.1001-4330.2021.02.016

• Animal Husbandry Veterinarian·Prataculture • Previous Articles Next Articles

Salt Resistance of 10 Grasses at Germination Stage

JI Bo^1,2,3, XU Jinpeng⁴, SHI Long⁴, JIANG Qi^1,3,YU Hongqian^1,3,WANG Zhanjun^1,3

1. Institute of Desertification Management, Ningxia Academy of Agricultural and Forestry Sciences, Yinchuan 750002, China;
2. School of Agriculture, Ningxia University, Yinchuan 750021, China;
3.Key Laboratory of Desertification Control and Soil & Water Conservation of Ningxia, Yinchuan 750002, China;
4. School of Grassland Science, Beijing Forestry University, Beijing 100083, China

Online:2021-02-20 Published:2021-01-29
Correspondence author: WANG Zhanjun(1978-),male,professor,(E-mail)nxwzhj@163.com
Supported by:
Supported by Foreign Science and Technology Cooperation Project of Ningxia Academy of Agricultural and Forestry Sciences (DW-X-2018016); Agricultural Science and Technology Independent Innovation Demonstration Project of Nixia (YES-2016-10);Technology Platform Construction Promotion Project of Ningxia Academy of Agricultural and Forestry Sciences (NKYP-19-06)

10种禾本科牧草种子萌发期耐盐性

季波^1,2,3, 徐金鹏⁴, 时龙⁴, 蒋齐^1,3, 俞鸿千^1,3, 王占军^1,3

1.宁夏农林科学院荒漠化治理研究所,银川 750002;
2.宁夏大学农学院,银川 750021;
3.宁夏防沙治沙与水土保持重点实验室,银川 750002;
4.北京林业大学草业与草原学院,北京 100083

通讯作者: 王占军(1978-),男,宁夏平罗人,研究员,硕士,研究方向为荒漠化防治及草地生态修复,(E-mail)nxwzhj@163.com
作者简介:季波(1982-),女,宁夏青铜峡人,副研究员,硕士,研究方向为草地资源与草地生态,(E-mail)nxjibo311@163.com
基金资助:
宁夏农林科学院对外科技合作专项(DW-X-2018016);自治区农业科技自主创新专项全产业链创新示范项目(YES-2016-10);宁夏农林科学院科技平台建设提升项目(NKYP-19-06)

Abstract

Abstract: 【Objective】 Ten perennial grasses materials (Agropyronmongolicumvar, mongolicum-Ningxia, A.mongolicumvar, mongolicum-Inner Mongolia, A.desertorum, A.cristatum, A.trachycaulumcv. Slender, Elymus sibiricus, E. dahuricus,Psathyrostachysjuncea, Elytrigiaelongata,Stipacapillata were used to evaluate their salt tolerance.【Method】 The relative germination rate (RGR), relative germination power (RGP), relative germination index (RGI), relative germ length (RGL),relative radicle length (RRL) and relative vigor index (RVI) were examined under different concentrations of NaCl solution (0, 0.2%, 0.4%, 0.6%, 0.8%, 1.0%, 1.2% and 1.4%) with 3 replicates by the method of subordinate function.【Result】 The salt stress had significant effects on the 10 accessions at the germination stage. However, all the indexes showed a decreasing trend with the increase of stress intensity. Low concentration (0.2%) salt stress could promote seed germination of A. desertorum, A. trachycaulumcv.Slender and E. elongata.【Conclusion】 According to the comprehensive evaluation of subordinate function method, the salt resistance of 10 materials followed the order of D (A. cristatum)＞J (E. elongate)＞G (Elymussibiricus)＞A(A.mongolicum-Ningxia) ＞H (Stipacapillata)＞C (A. desertorum)＞E (A. trachycaulumcv. Slender)＞F(Psathyrostachysjuncea) ＞B(A. mongolicum-InnerMongolia)＞ I (E. dahuricus).

Key words: salt stress; grasses; germination stage; subordinate function

摘要： 【目的】研究10种多年生禾本科牧草(蒙古冰草-宁夏、蒙古冰草-内蒙、沙生冰草、扁穗冰草、细茎冰草、老芒麦、披碱草、新麦草、长穗偃麦草和格林针茅)的耐盐能力,分析不同盐浓度对其种子萌发的影响规律,为宁夏干旱半干旱区选择耐盐力高的种植材料提供参考。【方法】 以10种牧草种质资源为材料,测定不同浓度NaCl溶液[0(CK)、0.2%、0.4%、0.6%、0.8%、1.0%、1.2%和1.4%]模拟盐胁迫对其相对发芽率(RGR)、相对发芽势(RGP)、相对发芽指数(RGI)、相对胚芽长(RGL)、相对胚根长(RRL)和相对活力指数(RVI)6个指标的影响,采用隶属函数综合评定的方法进行耐盐性评价。【结果】 8个盐胁迫浓度对10种多年生禾本科牧草种子相对发芽率、相对发芽势、相对发芽指数、相对胚芽长、相对胚根长和相对活力指数的影响,均表现为随着盐胁迫强度的增强,呈现降低趋势;低浓度(0.2%)盐胁迫下,种质材料沙生冰草和细茎冰草种子相对发芽率和相对发芽势均有提高,分别为对照的100.76%、106.10%和106.72%、160.87%,对种质材料J发芽率有促进作用,相对发芽率为对照的120.00%,但对其发芽势无影响;种质材料细茎冰草、新麦草和披碱草种子胚芽长较对照有提高,分别为对照的124.76%、122.26%和112.76%;种质材料E、I和J种子活力指数有提高,分别为对照的131.62%、104.73%和118.27%;8个浓度梯度的NaCl盐溶液对10种多年生禾本科牧草种子萌发胚根长均有抑制作用。【结论】 10种多年生禾本科牧草耐盐性强弱排序为D(扁穗冰草)＞J(长穗偃麦草)＞G(老芒麦)＞A(蒙古冰草-宁夏)＞H(格林针茅)＞C(沙生冰草)＞E(细茎冰草)＞F(新麦草)＞B(蒙古冰草-内蒙)＞I(披碱草)。

关键词: 盐胁迫, 禾本科牧草, 萌发期, 隶属函数

CLC Number:

S543

JI Bo, XU Jinpeng, SHI Long, JIANG Qi,YU Hongqian,WANG Zhanjun. Salt Resistance of 10 Grasses at Germination Stage[J]. Xinjiang Agricultural Sciences, 2021, 58(2): 342-351.

季波, 徐金鹏, 时龙, 蒋齐, 俞鸿千, 王占军. 10种禾本科牧草种子萌发期耐盐性[J]. 新疆农业科学, 2021, 58(2): 342-351.

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Salt Resistance of 10 Grasses at Germination Stage

10种禾本科牧草种子萌发期耐盐性

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