抄録
5 seed samples of 2-rowed beer barley “Hakata No. 2” were obtained from widely separated locations, ranging from Hokkaido to Kyûshû, and compared with each other in a randomized block arrangement with 5 replications during two years.
The differences found among them were of statistical nature, and upon visual inspection, they were undiscernible. Differences between local stratins in grain yield, number of ears per plant and date of heading were non-significant, whereas those in culm length, ear length, number of spikelets and weight of 1000 grains were significant.
It is assumed that these differences may be governed by polygenes. As seen from Table 2 and 4, a clinal variation was found in ear length and number of spikelets. These variations were explained as being the result of polygenic segregations under the pressure of natural selection according to the local conditions.
