冷型小麦及其生物学特征

通过多年来对小麦冠层温度和生物学性状的观测，结果发现：自然界存在小麦温度分异现象，即不同基因型小麦具有各不相同的体温并被划分为若干类群，这些类群的生物学性状有明显差异，尤其在叶片输出功能期、根系、叶绿素含量、蛋白质氮含量、丙二醛含量、蒸腾速率和净光合速率等方面。冷型小麦在上述诸方面表现较优。因而，冠

Cold Type Wheat and Its Biological Characteristics

On the basis of observation with the canopy temperature and the biological character of wheat for many years, the difference in wheat's temperature has been discovered in natural world, that is, each of wheats with different genotypes has a plant temperature all its own and they have been divided into some kinds which have obvious differences in biological characters, especially in export functional periods of the leaves, root system, chlorophyll content, protein nitrogen content, MDA content, transpiration rate and net photosynthetic rate, etc. The above characters of cold typal wheat are more excellent than those of other typal wheats. Thus, the canopy temperature may be considered as an outside signal of the metabolic function of wheat to a degree. By means of infrared technique, cold typal wheat can well be distinguished and the bases can be provided for the selection of parentage, line and variety.