锌对小麦种子萌发及幼苗生长的影响

中图分类号 S512.1 文献标识码A 文章编号 1007-7731（2025）09-0024-07

DOI号 10.16377/j.cnki.issn1007-7731.2025.09.006

AbstractTo investigate the effects zinc Z n on seed germination growth wheat，two cultivars，Shangmai 5226 Xiaoyan 15，were selected as experimental materials.6 Zn concentration gradients （ZnSO 0，50，100，200， 400， 8 0 0 m g / L ）were set，with 0 m g / L as the control （CK）. The germination indicators，growth indicators physiological indicators each group were measured.The resultsshowed that in terms germination parameters，as Znconcentration increased，thegermination potential germinationrateboth wheatcultivars first increased then decreased; at 10 mg/L Zn，Shangmai 5226 Xiaoyan 15 exhibited higher germinationrates germination potentials.Regardinggrowth indicators，with increasing Znconcentration，shoot length，shootfresh weight， shoot dry weightboth cultivars initiallyincreasedthendecreased，whereasrotlength，rootfreshweight，rootdry weightgraduallydeclined.Forphysiological indices，asZnconcentrationincreased，chlorophyllcontent，soluble protein content，soluble sugar content，superoxide dismutase （SOD）activity， catalase （CAT）activity in both wheat cultivars showed a trend increasing first then decreasing.In contrast，peroxidase （POD）activity malondialdehyde（MDA）content progressivelyincreased，whilefree prolinecontentfirstdecreasedtheninceased. In conclusion， Zn concentrations 5 0 -1 0 0 m g / L were conducive to the seed germination seeding growth Shangmai 5226 Xiaoyan 15; Zn concentration exceeding hadacertain inhibitory effect onwheat seed germination.

Keywords zinc; wheat; germination parameters; growth indicators; physiological indices

小麦作为重要的粮食作物之一，其栽培水平与产量直接影响区域粮食生产格局与总产稳定性[1-2]。（剩余9654字）