Study on Wheat Population with Low Temperature
Zhang Songwu;Song Zhemin;Cao Cuilan（Northwestem Agricutural University,Yangling Shansi 712100）
On the basis of observation with the temperature of wheat population for many years,low tem-perature population has been discovered in natural word.The population has a lower temperature with covering layer，longer functional period with leaf and fuller source, which is very favourable for milk-filling. Especially cold typal wheat in preceding population has a long time limits with tempera-ture which is lower than that of control wheat，strong evaporation and higher net photosynthetic rate，which is particularly favourable to enrich grain， Discovery of the typal wheat provides important theo-ry and practice bases for the selection of excellent parentage, line and variety.
【CateGory Index】： S426