玉米自交系材料耐高温特性鉴定筛选初报

A Preliminary Report on Identification and Screen of Maize Inbred Line Materials Tolerant to High Temperature

对来自国内外的816份玉米自交系及其资源材料进行耐高温特性的鉴定和筛选。将玉米的耐高温特性分为特耐、高耐、中耐、不耐四个级别。筛选结果为:特耐型2个,高耐型5个,中耐型20个,不耐型789个。试验表明,玉米自交系材料间的耐高温特性存在着明显差异,并且耐高温的材料太少。

maize inbred lines inside and outside the country were identified and screened for their tolerance to high temperature. The maize inbred lines for high-temperature-tolerance, moderate high-temperature-tolerance and non-high-temperature-tolerance lines. The screen result is as follows among 816 maize inbred lines, there exist 2 super high-temperature-tolerance lines, 5 high-temperature-tolerance lines, 20 moderate high-temperature-tolerance lines and 789 non-high-temperature-tolerance lines. The experimental result showed there exists obvious differences among the maize inbred lines for high-temperature-tolerance. It's obvious that the high-temperature-tolerance materials of maize that breeders own are very limited.