中国农业科学 ›› 2025, Vol. 58 ›› Issue (1): 30-42.doi: 10.3864/j.issn.0578-1752.2025.01.003

• 作物遗传育种·种质资源·分子遗传学 • 上一篇    下一篇

粒用高粱幼苗期耐苏打盐碱综合评价与指标鉴选

乔钲岩1,2(), 于淼1(), 唐玉劼1, 石贵山1, 刘新宇1,2, 刘晓涵1,3, 王新鼎1,2, 李扬1, 王鼐1,*(), 陈冰嬬1,*()   

  1. 1 吉林省农业科学院作物资源研究所,吉林公主岭 136100
    2 吉林农业大学农学院,长春 130118
    3 齐齐哈尔大学生命科学与农林学院,黑龙江齐齐哈尔 161000
  • 收稿日期:2024-06-09 接受日期:2024-09-02 出版日期:2025-01-01 发布日期:2025-01-07
  • 通信作者:
    王鼐,E-mail:
    陈冰嬬,E-mail:
  • 联系方式: 乔钲岩,E-mail:15039961556@163.com。于淼,E-mail:yumiao910816@163.com。乔钲岩和于淼为同等贡献作者。
  • 基金资助:
    吉林省科技发展计划(20240601065RC); 农业农村部国家现代农业产业技术体系建设专项(CARS-06)

Comprehensive Evaluation for Soda Salinity and Alkalinity in Sorghum Seedling Stage and Selection of Indicators

QIAO ZhengYan1,2(), YU Miao1(), TANG YuJie1, SHI GuiShan1, LIU XinYu1,2, LIU XiaoHan1,3, WANG XinDing1,2, LI Yang1, WANG Nai1,*(), CHEN BingRu1,*()   

  1. 1 Crop Resources Research Institute of Jilin Academy of Agricultural Sciences, Gongzhuling 136100, Jilin
    2 College of Agronomy, Jilin Agricultural University, Changchun 130118
    3 College of Life Sciences and Agriculture and Forestry, Qiqihar University, Qiqihar 161000, Heilongjiang
  • Received:2024-06-09 Accepted:2024-09-02 Published:2025-01-01 Online:2025-01-07

摘要:

【目的】筛选苏打盐碱胁迫液浓度和耐盐碱测定指标,建立大批量耐盐碱鉴定方法;对粒用高粱核心种质的耐盐碱特性进行综合评价,筛选耐盐碱种质,为进一步培育耐盐碱亲本和杂交种提供种质基础。【方法】松嫩平原盐碱土的主要成分是Na2CO3和NaHCO3。采用50 mmol·L-1 NaHCO3﹕Na2CO3=9﹕1为胁迫液模拟松嫩平原中度盐碱土环境,胁迫液的pH为9.19、含盐量为0.21%。以苗高、根长、苗鲜重、根鲜重、苗干重、根干重、根冠比鲜重、根冠比干重8个性状为测定指标,鉴定285份粒用高粱核心种质苗期的耐盐碱特性。采用主成分分析筛选粒用高粱苗期耐盐碱鉴定指标并建立幼苗期耐盐碱评价数学模型,采用聚类分析将285份高粱种质的耐盐碱特性分级,筛选出耐盐碱性较强的种质。【结果】50 mmol·L-1盐碱胁迫对285份高粱种质的8个指标均表现出抑制作用,8个性状的平均耐盐碱系数分别为0.794、0.785、0.565、0.554、0.802、0.638、0.978和0.841,并且盐碱胁迫下各指标之间均呈现出显著正相关性;主成分分析筛选出苗高、根鲜重可作为高粱幼苗期苏打盐碱胁迫鉴定评价的指标;采用多元线性回归分析归纳出高粱幼苗期耐盐碱特性评价模型Y=0.097X4+0.171X2+ 0.201X6+0.157X1+0.105X3-0.147,可用于多个指标的综合评价;聚类分析将285份粒用高粱核心种质耐盐碱特性划分为强耐盐碱、耐盐碱、中间型、敏感型、极敏感型5个等级,其中,强耐盐种质8份、耐盐碱种质8份、中间型种质112份、敏感型种质134份、极敏感型种质23份。将耐盐碱种质和极敏感型种质种植在吉林省西部苏打盐碱地中度盐碱土(pH 8.5—9.5、含盐量0.3%)进行验证,强耐盐碱种质平均出苗率为45.4%、平均苗高为23 cm;耐盐碱种质平均出苗率为31.3%、平均苗高20.9 cm;极敏感型种质平均出苗率为20%、平均苗高12.3 cm。【结论】以50 mmol·L-1苏打盐碱浓度(NaHCO3﹕Na2CO3=9﹕1)从285份高粱种质资源中筛选出8份强耐苏打盐碱的种质,8份耐盐碱种质,筛选出苗高和根鲜重2个性状作为高粱幼苗期大批量耐盐碱筛选的鉴定评价指标。

关键词: 苏打盐碱土, 高粱, 苗期, 耐盐碱, 综合评价

Abstract:

【Objective】This study was conducted to screen the concentration of soda saline-alkali stress solution and the determination index of saline-alkali tolerance, to establish the identification method of saline-alkali tolerance to large-scale identification of sorghum germplasms. The saline-alkali tolerance of the core germplasms of grain sorghum were comprehensively evaluated, and the saline-alkali tolerant germplasms were identified and selected to provide a germplasm basis for further breeding of saline-alkali tolerant parents and hybrids.【Method】The main components of saline-alkali soil of in The Songnen Plain are Na2CO3 and NaHCO3. This experiment used 50 mmol·L-1 NaHCO3﹕Na2CO3=9﹕1 as a stress solution to simulate the moderate saline-alkali environment in Songnen Plain, the pH is 9.19, Salinity is 0.21%. Eight traits, including seedling height, root length, seedling fresh weight, root fresh weight, seeding dry weight, root dry weight, root-shoot ratio fresh weight and root-shoot ratio dry weight were used as measurement indexes and the saline-alkali tolerance characteristics of 285 sorghum core germplasms at seedling stage were identified. Principal component analysis was used to screen the salt-alkali tolerance identification indexes of grain sorghum at seedling stage and establish a mathematical model for salt-alkali tolerance evaluation at seedling stage. The saline-alkaline tolerance of 285 sorghum germplasms was classified by cluster analysis, and the germplasms with strong saline-alkaline tolerance were screened.【Result】50 mmol·L-1saline-alkali stress showed inhibitory effects on 8 indexes of 285 sorghum germplasms, the average values of saline -alkali resistance coefficients are 0.794, 0.785, 0.565, 0.554, 0.802, 0.638, 0.978, and 0.841.Under saline alkali stress, 8 indexes showed significant positive correlations; the seedling height and root fresh weight could be used as the indexes for the identification and evaluation of soda saline-alkali stress in sorghum seedling stage by principal component analysis; The evaluation model of saline-alkali tolerance characteristics of sorghum seedlings was summarized by multiple linear regression analysis Y=0.097X4+0.171X2+0.201X6+0.157X1+0.105X3- 0.147, it can be used for comprehensive evaluation of multiple indicators. 285 grain sorghum core collections were divided into 5 grades by cluster analysis, strong saline-alkali tolerance, saline-alkali tolerance, intermediate type, sensitive type and extremely sensitive type, Among them, there were 8 strong salt-tolerant germplasms, 8 salt-tolerant germplasms, 112 intermediate germplasms, 134 sensitive germplasms and 23 extremely sensitive germplasms. The saline-alkali tolerant germplasm and extremely sensitive germplasm were planted in the moderate saline-alkali soil (pH 8.5-9.5, Salinity 0.3%) for verification in Zhenlai County of western Jilin Province. The average seedling emergence rate of strong saline-alkali tolerant germplasm was 45.4%, and the average seedling height was 23 cm. The average seedling emergence rate of salt-tolerant germplasm was 31.3%, and the average height was 20.9 cm. The average emergence rate of extremely sensitive germplasm was 20%, and the average seedling height was 12.3 cm.【Conclusion】8 strong soda saline-alkali tolerant germplasms and 8 saline-alkali tolerant germplasms were screened out from 285 sorghum germplasms resources with 50 mmol·L-1 soda saline-alkali concentration (NaHCO3﹕Na2CO3=9﹕1). The seedling height and root fresh weight could be used as the preferred evaluation indexes for the identification of saline-alkali tolerance at seedling stage.

Key words: soda saline alkali soil, sorghum, seedling stage, salt alkali resistance, comprehensive evaluation