草业科学2025，Vol.42Issue(1)：162-171,10.DOI:10.11829/j.issn.1001-0629.2023-0443
NaCl胁迫条件下8份小黑麦水分利用与光合特性的比较与评价
Comparison and evaluation of water-use and photosynthetic characteristics of eight triticale cultivars under NaCl stress
摘要
Abstract
In this study,we sought to identify salt-tolerant triticale germplasms suitable for cultivation in areas characterized by saline soil.To this end,we performed potted seedling experiments to assess the effects of simulated salt stress(0.6％NaCl solution)on the growth,water-use characteristics,photosynthetic physiological parameters,and salt tolerance of the seedlings of different triticale germplasms at different stages of growth.The results revealed that salt stress had significant effects on the growth of triticale seedling,a including significant inhibition of plant height,tiller number,total biomass,and specific leaf area.In addition,we detected significant reductions in the net photosynthetic rate,stomatal conductivity,and transpiration rates of the different triticale germplasms.Among the assessed germplasm,'Jian-18'had the highest plant height,tiller number,net photosynthetic rate,transpiration rate,water potential,and carbon isotope content,with respective values of 46.95 cm,three,10.08 μmol·(m2·s)-1,3.88 mmol·(m2·s)-1,-1.81 MPa,and-27.15％.Conversely,compared with the control plants,we recorded 80.4％and 91.6％reductions in the above-and belowground biomasses of T-6,respectively.The results of cluster analysis indicated that the different triticale germplasms can be divided into the following three categories based on salt tolerance:good salt tolerance('Jian-18''Jisicao 1'),general salt tolerance('TXWB-2''TXWB-3''Jian-47'),and poor salt tolerance('TXWB-6''TXWB-7''TXWB-8').Furthermore,the salt tolerance of the different germplasms,fromgoodtopoor,couldbeorderedasfollows:'Jian-18'＞'Jisicao1'＞'TXWB-2'＞'Jian-47'＞'TXWB-3'＞'TXWB-8'＞'TXWB-7'＞'TXWB-6'.关键词
盐胁迫/小黑麦/不同种质/苗期/光合特性/相关性分析/耐盐性评价Key words
salt stress/triticale/different germplasm/seedling stage/photosynthetic characteristic/correlation analysis/salt tolerance evaluation引用本文复制引用
张译尹,李雪颖,王斌,赵小娜,胡海英,兰剑..NaCl胁迫条件下8份小黑麦水分利用与光合特性的比较与评价[J].草业科学,2025,42(1):162-171,10.基金项目
宁夏重点研发计划项目(2019NYYZ0402) （2019NYYZ0402）
宁夏自然科学基金项目(2020AAC03080) （2020AAC03080）
宁夏高等学校一流学科建设(草学学科)项目(NXYLXK2017A01) （草学学科）
