小麦温型现象研究

通过多年来用红外技术对不同品种小麦群体温度进行连续观测,结果发现,小麦具有温型现象.不同温度型的小麦在外部和内部性状上各有一些鲜明特点.冷型小麦的许多重要性状较暖型小麦为优.功能叶的功能期长10.8%,每株根数多20条,旗叶的叶绿素含量、蒸腾率和净光合率分别高出0.1389g·100g^-1·FW、0.0035mol·m^-2·s^-1和4.71μmol·m^-2·s^-1.由此可以认为,温度型和小麦的一系列重要性状密切相关.

Temperature type phenomenon of wheat

Based on many years continual determination of temperature for the populations of wheat varieties by means of infrared technique, the temperature type phenomenon of wheat is discovered. Each temperature type of wheat has its distinct characteristics in its external and internal characters. Cold typal wheat is superior than warm typal one in many important characters:the functional period of its functional leaves is 10.8% longer, its root number per plant is 20 more, and the chlorophyll content, transpiration rate and net photosynthetic rate of its flag leaves are respectively 0.1389 g·100g^-1 ·FW,0.0035 mol·m -2 ·s^-1 and 4.71 μmol·m -2 ·s^-1 higher.It is considered that the temperature type wheat is closedly related with a series of important characters of wheat.