아코디온穗形의 主要特性과 遺傳

Inheritance and Agronomic Characters of Accordion Spike Barley

The barley having accordion shaped spike was found at the Yeongnam Crop Experiment Station in 1979. This barley was named by YBG-ACS₁ (Yeongnam barley gennplasm-accordion spike 1.) The rachis internode length of this barley was 15.1㎜ and the streched spike length 21.2㎝ which is 4.8times longer than that of Oweolbori. The ratio of spike length to culm length was 29.4 % of YBG-ACS₁ comparing to 5.1% of Oweolbori. In the F₂ population of YEG-ACS₁ and Oweolbori cross, the segregating ratio of accordion rachis type was 13:3 for normal straight rachis: accordion rachis which resulted by controlling of suppressor gene, however the spike type segregated by the ratio of 9:3:3:1 for lax-type: normal-type: accordion type: compact-type which resulted by controlling of two independent genes. Broad sense heritability estimates for spike length was very high in lax type and accordion-type, while it was very low for normal-type and compact-type. Correlation analysis among the agronomic characters, significant positive correlations were observed between the spikes per plant and kernels per spike, and 1000kernel weight: in lax-type of spike. From the above results, YBG-ACS₁ of barley was expected as a very good breeding material for short-culm, long spike and large kernel of barley.