Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2021, Vol. 37 ›› Issue (14): 15-20.doi: 10.11924/j.issn.1000-6850.casb2020-0514

Special Issue: 生物技术 玉米 烟草种植与生产

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Seed Treatment: Effects on Emergence and Physiological Traits of Early-sowing Maize

Hou Wen1(), Du Zhuo1, Zhang Fengyun2, Wu Ziwen1, Wang Li1, Lu Yuncai1()   

  1. 1College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080
    2Heilongjiang University Library, Harbin 150080
  • Received:2020-09-03 Revised:2020-11-25 Online:2021-05-15 Published:2021-05-19
  • Contact: Lu Yuncai E-mail:1240351551@qq.com;luyuncai@hlju.edu.cn

Abstract:

To provide new technologies for the resistance to low temperature damage of maize, the hybrid seeds of maize were used as materials, 16 groups of seed treatment were designed, including exogenous plant growth materials, compound solutions, ultrasonic wave, seed coating agents and so on. The low temperature stress was simulated by early sowing in the field. The effects of early sowing on the emergence rate, SPAD value, soluble sugar, soluble protein and peroxidase activity were studied. The results showed that the emergence rate of early-sowing maize significantly increased with seed-coating agent. The SPAD value of plant chlorophyll also significantly increased. For T8 coating treatment, the soluble sugar content significantly increased by 34.24%, compared with CK. For T5, T7, T8 and T10 coating treatment, the soluble protein content increased by 8.60%, 21.72%, 9.70% and 19.16%, respectively. For T1, T2, T3, T10, T14 and T15 treatment, the peroxidase activity increased compared with CK. All treatment groups with seed coating agents had significant effects on alleviating low temperature damage. Totally, the integrated strategies of seed priming, ultrasonic treatment and seed coating technology can improve the cold resistance of early sowing maize.

Key words: maize, early sowing, low temperature damage, ultrasonic wave, growth regulator, compound solution, seed coatings, emergence rate, physiological trait

CLC Number: