新疆农业科学2024，Vol.61Issue(12)：2890-2901,12.DOI:10.6048/j.issn.1001-4330.2024.12.004
促生菌及其组合对新疆干旱区小麦生长和生理特性的影响
Effects of growth promoting bacteria and their combinations on the growth and physiological characteristics of wheat in arid areas of Xinjiang
摘要
Abstract
[Objective]The effect of microbial agents is greatly influenced by crop and ecological condi-tions,so this research aims to screen the functional strains adapted to the growth promotion,lodging resistance and biotic or abiotic stress tolerance in Xinjiang soil type and climate characteristics.To provide high-quality bacterial resources for the development of microbial fertilizers suitable for Xinjiang arid areas.[Methods]Eco-logical adaptability studies showed that these strains had varying degrees of salt alkali and drought resistance,etc.[Results]Nine strains with growth promoting functions were isolated from soils in different ecological en-vironments in Xinjiang.The effects of single and compound bacteria on the growth and physiological character-istics of wheat were determined using seed soaking method by pot experiment.In mild saline alkali soil,the germination rate of 9 strains increased by 6.67％-33.33％,the plant height increased by 6.91％-54.09％,the fresh weight increased by 15.74％-75.32％,and the chlorophyll content increased by 27.03％-143.87％.8 strains increased the activity of phenylalanine ammonia lyase with disease resistance in wheat plants,and the increase ranged between 18.06％-89.59％.5 strains of increased the peroxidase activ-ities with stress resistance in wheat plants.3 strains increased the lignin content related to lodging resistance in wheat plants by 19.10％,13.77％,and 8.43％,respectively.Combining functions such as growth promo-tion,lodging resistance,and stress resistance,three strains of Y24(Paenibacillus),SD5(Bacillus),and L6(Halomonas)with different functions of promoting growth,resisting lodging and promoting premature matura-tion were combined.The combination of SD5-L6 treatment had the best effect on wheat growth and physiologi-cal characteristics.Compared to SD5 and L6,the germination rate and fresh weight increased by 7.15％and 0.00％,133.33％and 1.23％,respectively.The content of chlorophyll and lignin increased by 100.00％and 92.03％,5.34％and 2.45％,respectively.The activity of PAL and POD enzymes increased by 8.25％and 44.80％,4.13％and-6.04％,respectively.[Conclusion]Under mild saline alkali stress in arid areas of Xinjiang,wheat plant height does not increase significantly after combination,but the functional effects of germination rate,fresh weight,photosynthesis,lodging resistance,and stress resistance are significantly better than those of a single strain,which shows that different strains can synergistically increase efficiency.The com-bination of Bacillus and halomonas can play a greater role in promoting wheat growth and enhancing plant stress resistance.关键词
小麦/功能菌株/合成菌群/促生评价Key words
wheat/functional strains/synthetic bacteria consortia/promoting effects分类
农业科技引用本文复制引用
顾美英,张志东,葛春辉,朱静,唐琦勇,艾尼江·尔斯满,楚敏,唐光木,易鸳鸯,徐万里..促生菌及其组合对新疆干旱区小麦生长和生理特性的影响[J].新疆农业科学,2024,61(12):2890-2901,12.基金项目
国家重点研发计划项目(2021YFD1900802) （2021YFD1900802）
新疆农业科学院稳定支持专项子课题(xjnkywdzc-2023002-3-2) （xjnkywdzc-2023002-3-2）
新疆维吾尔自治区重大科技专项子课题(2023A02012-3-5) National Key Research and Development Program of China(2021YFD1900802) （2023A02012-3-5）
Stable Support Project of Xinjiang Academy of Ag-ricultural Sciences(xjnkywdzc-2023002-3-2) （xjnkywdzc-2023002-3-2）
Major Science and Technology Projects of Xinjiang Uygur Autonomous Region(2023A02012-3-5) （2023A02012-3-5）
