[1]WANG Xiaoling,LI Xiaoqian,ZHAO Wei,et al.Study on the Compensatory Growth Mechamism Adjusted by Cytokinin After Corn Seedling Re-watering[J].Research of Soil and Water Conservation,2016,23(04):300-305,312.
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Study on the Compensatory Growth Mechamism Adjusted by Cytokinin After Corn Seedling Re-watering
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
23
Number of periods:
2016 04
Page number:
300-305,312
Column:
Public date:
2016-04-28
- Title:
- Study on the Compensatory Growth Mechamism Adjusted by Cytokinin After Corn Seedling Re-watering
- Keywords:
- corn; cytokinin; compensatory growth; re-watering; drought stress
- CLC:
- S311
- DOI:
- -
- Abstract:
- The compensatory growth mechanism after corn re-watering at seeding stage was investigated by testing plant hormones. Results showed that drought stress caused low biomass of aboveground and whole plant, and there was no significant difference for the biomass of aboveground and whole plant between the two treatments of re-watering after drought stress and adequate watering after six days since re-watering. Aboveground biomass index and total biomass index are the indexes indicating biomass variance of aboveground and whole plant based on their pre-rewatering biomass, respectively. High aboveground biomass index and total biomass index occurred in the treatment of re-watering after drought stress. Concentrations of zeatin and zeatin riboside (Z+ZR), in leaves and xylem sap were measured. The results showed that the value of aboveground biomass index and total biomass index were adjusted by leaf Z+ZR, and that roots regulated leaf Z+ZR concentration. Therefore, root-induced leaf cytokinin is the key factor affecting corn compensatory growth after re-watering at seeding stage.
- References:
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