裸麦の脱〓難性

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(1) The mechanis.m as well as the genetical behaviour to the stiffness, in the husking of the naked barley has been invcs,tigated in this, experiment. The stiffness in the husking is determined by means of the artificial separation of glume from the grain. (2) The difference in the degree of stiffness in the husking was found in the naked barley varieties. The degree of separation of glume from the grain were over 90%:,60%-90% and 3-7% in the s,emi-brachytic type, normal type and aiso in the stifE varieties of the normal type respectively. (3) High correlation between the ratio of the width to length of the opening of the outer glume and the degree of separation of giume from the grain was observed. (4) The difEerence in the s,hape of the grain between the normal type varieties and the semibrachytic varieties were clearly explained by Dr. TAKAHASHI in 1942. In this experiment the authors observed that the difference in the s,hape of the grain was significant among the normal type varietics also and it has, also been found that the round or broad grains were easy to husk in comprison to the narrow grains.. ( 5) The norma] type plants., bearing the grains which are easy to hus.k, have been fourid in the F2 popu]ation of 8 crosses, obtained from the neked, covered, normal and semi-brachytic types. The heritability value of the characters concerning the shape of the grain was, relatively high.
日本育種学会の論文
1957-03-25

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