Study On The Relationship Between Micronutrients And Neurotrophic Factors In Rice Grain Under Salt Stress

This study type salt-tolerant rice red rice ’HH11’,’HH12’,’JX99 and rice YSXD,XZ3,TXZ grain rice varieties,set up eight soil salinity(0.05%,0.1%,0.15%,0.2%,0.25%,0.3%,0.35%,0.4%),in the pot experiment under rainproof shelter,rice quality nutrition characteristics of 6 rice varieties effect,the accumulation of carbohydrates,trace elements and the relationship between nutrition factor and test analysis,to explore trace element under salt stress factors and the correlation between nutritional factors,The interaction between trace elements and nutrient factors under salt stress was revealed to provide theoretical basis for breeding new varieties with salt-tolerance.The results are as follows:The increase of salt stress promoted the increase of anthocyanin content(HH11,HH12,JX99)in three red rice varieties,while the content of anthocyanin in white rice YSXD as the control group was almost zero.The nutritional quality of red rice was far higher than that of white rice.Salt stress promoted the synthesis of anthocyanin in red rice.Under salt stress,red rice varieties HH11,HH12 and JX99 had higher content of total flavonoids than white rice,higher content of tryptophan and lysine,and higher nutritional characteristics than white rice varieties under salt stress.Low salt stress could increase the content of tryptophan,lysine,anthocyanin and total flavonoids in rice and increase the quality of red rice.Soluble sugar in seeds of salt-sensitive varieties accumulated more soluble sugar under salt stress than that of salt-tolerant varieties.However,when the content of soluble sugar in seeds of salt-tolerant rice red rice reached its peak,its synthesis was inhibited.It is possible that most of soluble sugar in plants was used for osmotic pressure regulation,resulting in less grain accumulation.The sucrose content in rice grain increased with the increase of salt concentration,which maximized the transportation of synthetic photosynthetic products to reproductive organs.The sucrose content in red rice grain was higher than that in white rice.The contents of amylopectin and amylopectin were less affected by salt stress.There was a significant canonical correlation between antioxidant factors and trace elements in rice grains.The canonical correlation of antioxidant factors was the interaction between total flavonoids and vitamin C and trace elements.Anthocyaninwas the non-dominant factor,and trace elements were selenium and zinc under salt stress.There was a good linear relationship between the variables of antioxidant factors and significant interaction effect.The linear correlation coefficient among trace elements variables did not reach the significant level except for selenium and magnesium,and these trace elements were in a relatively independent state on the linear correlation.There was a significant correlation between selenium and antioxidant vitamin C,phytic acid and total flavonoids.The simple correlation and partial correlation between anthocyanin content in rice grain and its trace elements were weak and could not reach the significant level.According to the comprehensive results of simple correlation,partial correlation and canonical correlation analysis,it can be inferred that the anthocyanin content in rice grain is mainly determined by the variety characteristics,and the main way to increase the anthocyanin content in rice grain and increase the antioxidant factor is variety selection.