普通小麦日长反应的探讨

THE DAY-LENGTH REACTION FOR THE COMMON SPECIES OF WHEAT

For the sake of understanding comprehensively the propert of day-length reaction for the commum species of wheat (Triticum aestivu L.), experimental data of wheat ecology were collccled from field experiment arranged in different sowing stages in Beijing and Gui ang during 1982 -1985. The 31 varieties studied are in different ccot pcs. Growth and development process from rowing to heading of 8 varieties is reported in this article, indicating that the process from sowing to physio-elongating could be completed under either long-day conditions or short-day filed conditions . After ph., sio-elongation, plants could complete heading even in short-da. conditions. The species of wheat sowing in short-days will not be necessar to have a prolonged heading stage if there is a proper temperature with it. The wheat has not independent photophase in the process of growth and development. It should belong in a da-neutral plant. The common species of wheat has broad ecological adaptabilit .