The occurrence of sterile spikelets in wheat spikes depending on nitrogen rates and temperatures at grain formation
1997
Milosev, D. (Poljoprivredni fakultet, Novi Sad (Yugoslavia))
A trial by means of Mitscherlich's pots was conducted. The number of sterile spikelets in primary spikes is much smaller in the plants subjected to nitrogen fertilization than with those to which no nitrogen has been added. Among the fertilized treatments, this number began to increase when nitrogen rates exceeded 1 g per pot, especially in the first year of the study. In the case of secondary spikes, however, the situation was exactly the opposite. The number of sterile spikes showed a highly significant decrease all the way up to the maximum rate of 3 g per pot. With regard to temperatures, on the other hand, it can be concluded that, on the whole, their effect was neither consistent nor significant, since the variation came at the point when the number of sterile spikelets had already been largely determined.
显示更多 [+] 显示较少 [-]