玉米种子萌发抗旱药剂的筛选

doi:10.12190/j.issn.2096-1197.2021.06.12

Abstract

Abstract: 【Objective】Drought-tolerance regulators are being tested for seed germination in order to improve maize seed drought resistance.【Methods】Drought conditions were simulated in the experiment using polyethylene glycol 6000 at a concentration of 25%. 14 different regulators were chosen with three concentrations each. Control 1（CK1）was distilled water,and control 2（CK2）was non-initiation. Drought tolerance agents were selected by primary and secondary screening on seed germination of both Xianyu 335 and Kehe No.8.【Results】The seed germination rate,germination index,vigor index,and germination drought resistance index of two maize varieties induced by 100 mg/L Ethephon and 100 mg/L Uniconazole were significantly higher than those induced by other regulators under drought stress（P<0.05）. The germination rate of 100 mg/L Ethephon increased by 6.67 percentage points（Kehe No.8）and 18.00 percentage points（Xianyu 335） compared with that of distilled water initiator（CK1）,and 28.00 percentage points（Kehe No.8）and 70.67 percentage points（Xianyu 335） compared with that of non-initiation（CK2）. The germination rate of 100 mg/L Uniconazole increased by 4.00 percentage points（Kehe No.8）and 16.00 percentage points（Xianyu 335）compared with that of distilled water initiator（CK1）,and increased by 16.00 percentage points（Kehe No.8）and 68.67 percentage points（Xianyu 335）compared with that of non-initiation（CK2）. The effect of both regulators on Xianyu 335 was stronger than on Kehe No.8.【Conclusion】Under drought stress,100 mg/L Ethephon and 100 mg/L Uniconazole had significant effects on Xianyu 335 and Kehe No.8 seed germination. This would be useful in future drought-tolerance regulator research.

Key words: Maize, Seed, Drought-tolerance regulator, Ethephon, Uniconazole

CLC Number:

S513

QU Jiawei, GAO Julin, YU Xiaofang, SUN Jiying, WANG Zhigang, WANG Zhen, TIAN Lei. Screening of drought-tolerance regulators for maize seed germination[J].Journal of Northern Agriculture, 2021, 49(6): 90-97.

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URL: https://journal30.magtechjournal.com/bfnyxb/EN/10.12190/j.issn.2096-1197.2021.06.12

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References

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Screening of drought-tolerance regulators for maize seed germination

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