诱抗剂对向日葵抗性诱导的研究

doi:10.12190/j.issn.2096-1197.2022.03.07

Abstract

Abstract: 【Objective】To investigate the control effect of elicitor on Orobanche cumana as well as its physiological and biochemical effects on the induction of sunflower resistance,in order to find a novel approach to the issue of challenging control of malignant parasitic weeds in sunflower fields.【Methods】To conduct the control effect test of elicitor,600 times and 800 times diluted elicitor were combined with various secondary application schemes using combined field experiment with indoor instrument analysis. The chlorophyll and glutathione contents of sunflower leaves,as well as the activities of glutathione S-transferase,peroxidase and superoxide dismutase were measured.【Results】The 600 and 800 times diluted elicitor had obvious control effect on Orobanche cumana,and the control effect increased significantly with the increase of concentration. 18 d after application,the control effect was 19.8% to 92.4%. The best application time was at 8-10 leaf stage and 12-14 leaf stage of sunflower. The application of elicitor was not only safe for sunflower plants,but 600 times diluted solution also increased plant height by 12.41% and fresh weight by 22.56% compared with the water control. At the same time,the elicitor significantly increased the contents of chlorophyll and glutathione in sunflower leaves,with 600 times diluted solution increased by 9.62% and 23.15% respectively. The activities of glutathione S-transferase,peroxidase and superoxide dismutase increased significantly with the application of 600 times diluted elicitor solution. Compared with the water control,the peak value increased by 5.09%,59.45% and 23.72% respectively.【Conclusion】The elicitor effectively controlled Orobanche cumana while being highly safe to sunflower.

Key words: Elicitor, Sunflower, Induced resistance, Orobanche cumana, Control effect

CLC Number:

S451.1

TAO Bo, ZHAO Xu, DU Lei, YUN Xiaopeng. Study on induction of sunflower resistance by elicitor[J].Journal of Northern Agriculture, 2022, 50(3): 53-59.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.12190/j.issn.2096-1197.2022.03.07

https://journal30.magtechjournal.com/bfnyxb/EN/Y2022/V50/I3/53

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Study on induction of sunflower resistance by elicitor

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