Resistance Evaluation of 34 Rice Varieties Against False Smut and the Biochemical Substances of Rice to False Smut
|Keywords||Rice False smut Identification of resistance Biochemical Resistance|
Preliminary identification of disease resistance of 34 rice varieties collected by natural and induced artificial inoculation method of combining results are as follows : 34 varieties are highly resistant varieties , and 9 resistant varieties , accounting for 26.47 10 % , in the resistant variety , accounting for 29.41% , 11 in the sense of variety , accounting for 32.35% , the susceptible cultivar 3 , accounting for 8.57% , a highly susceptible , accounting for 2.94% . The study found that 34 rice varieties false smut resistance between anti- and in a sense , on the whole , the rice varieties resistant to false smut or weak . Resistance Identification based on the choice of anti- anti- and high sense of three different resistant rice varieties , in the the rice booting final inoculum panicle syringe injection , the first time in the country , its related physiological and biochemical indexes system : MDA content and POD , PPO , PAL , CAT activity is one of the important mechanism of the anti - false smut of rice . The highly susceptible MDA content increased significantly , small changes of MDA content of resistant varieties . The study found elevated MDA content of lipid peroxidation , MDA content stability conducive resistance to rice false smut , suggesting that rice varieties resistant performance is closely related to the content of MDA ; another CAT activity in the non- pro and reaction decline , the CAT activity of disease-resistant rice varieties after inoculation susceptible varieties of CAT activity decreased , performance is increased, indicating more closely related to rice varieties resistant performance with CAT activity after inoculation ; liters of POD and PAL activity high favor lignin and phytoalexin synthesis , PPO of increased favor oxidation of phenolic compounds into quinones , cytotoxicity inhibition of invading pathogens resistant varieties of POD, PAL and PPO activity after inoculation elevated susceptible varieties POD , PAL and PPO activity after vaccination did not change significantly , suggesting that the rice varieties resistant performance is closely related to the activity of POD, PPO and PAL ; vaccination , anti- susceptible varieties of SOD the activity was not significantly different , indicating that the resistance of rice varieties and SOD activity relationship is not obvious . Different varieties are some differences in the content and performance of various biochemical factors .