紫外辐射增强对菠菜种子萌发及出苗的影响

Influence of the ultraviolet radiation on both the spinach seed germination and the seedlings

摘要:

研究了紫外辐射(UV-B)增强对圆叶和尖叶菠菜种子萌发及出苗的影响。结果表明,UV-B辐射增强将显著降低圆叶菠菜种子的出芽率和出苗率,延缓发芽进程、出苗速度,影响幼苗长势;而对尖叶菠菜的影响较小;增强UV-B辐射还能有效抑制菠菜种子发芽时因病菌感染而发生的霉变,并减少幼苗期病虫害的蔓延和发展。

Abstract:

The influences of the intensified Ultraviolet radiation(UV-B radiation, 280~400m on both the seed germination and its emergence for both the round-leaf and the angular-leaf spinach are studied in the present article.It is found that the enhanced UV-B tends to decrease both the germination percentage and the emergence rate of round-leaf spinach by retarding the progress of seed germination and the timetable of seedlings and hence to influence the growth of the seedlings.The influences of extra UV-B radiation on the angular spinach seeds are not noticeable.The intensified UV-B radiation seems to effectively prevent the seed germination from the mildew caused by the bacteria.The damage caused by the harmful insects is also decreased when the UV-B radiation is intensified.