Sadeghianfar Pouria, Nazari Meisam, Backes Gunter
Department of Crop Sciences, Faculty of Agricultural Sciences, Georg-August University of Göttingen, Büsgenweg 5, 37077 Göttingen, Germany.
Department of Organic Plant Breeding and Agrobiodiversity, Faculty of Organic Agricultural Sciences, University of Kassel, Nordbahnhofstr. 1a, 37213 Witzenhausen, Germany.
Plants (Basel). 2019 Feb 24;8(2):49. doi: 10.3390/plants8020049.
This study investigated the effect of ultraviolet (UV-C) radiation on the germination percentage, germination rate, radicle length, and plumule length of maize and sugar beet seeds. The experiment was implemented in six replicates of 30 seeds per replicate and in sterilized petri dishes under laboratory conditions. Treatments included UV-C (254 nm) radiation exposure durations of 0 min (control), 30 min, 2 h, 4 h, 8 h, and 12 h. The UV-C radiation treatments did not significantly affect the germination percentage of the seeds ( < 0.05). However, the seeds germination rate was significantly affected by the UV-C radiation treatments. The treatments of 8 h and 12 h exposure duration led to the highest seed germination rates in maize and sugar beet, respectively. Lowest seed germination rates belonged to the controls. The radicle length of maize seeds was significantly affected by the UV-C radiation treatments, but the treatments did not significantly affect the radicle length of sugar beet seeds. The 12 h exposure to UV-C radiation treatment resulted in the largest radicle in maize, which was 2.08 cm larger than the radicle of the control seeds. The UV-C radiation treatments had a statistically significant effect on the plumule length of maize and sugar beet seeds. The treatment 8 h UV-C exposure duration led to the largest plumule in maize and sugar beet, which were 0.32 cm and 0.83 cm larger than the plumule of the control seeds, respectively. Breaking down the seed coat and increasing the temperature by UV-C radiation are potential reasons for the observed positive effects.
本研究调查了紫外线（UV-C）辐射对玉米和甜菜种子发芽率、发芽速率、胚根长度和胚芽长度的影响。实验在实验室条件下进行，每个培养皿放置30粒种子，共设6个重复，并使用经过灭菌处理的培养皿。处理包括UV-C（254纳米）辐射暴露时长分别为0分钟（对照）、30分钟、2小时、4小时、8小时和12小时。UV-C辐射处理对种子的发芽率没有显著影响（P<0.05）。然而，种子的发芽速率受到UV-C辐射处理的显著影响。暴露时长为8小时和12小时的处理分别使玉米和甜菜种子的发芽速率达到最高。最低的种子发芽速率属于对照组。UV-C辐射处理对玉米种子的胚根长度有显著影响，但对甜菜种子的胚根长度没有显著影响。暴露于UV-C辐射12小时的处理使玉米的胚根最长，比对照种子的胚根长2.08厘米。UV-C辐射处理对玉米和甜菜种子的胚芽长度有统计学上的显著影响。暴露于UV-C辐射8小时的处理使玉米和甜菜的胚芽最长，分别比对照种子的胚芽长0.32厘米和0.83厘米。UV-C辐射破坏种皮并提高温度可能是观察到这些积极影响的潜在原因。
