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高永王,元鐘樂 진주산업대학교 1983 論文集 Vol.21 No.-
감마總을 處理한 大麥 M_2에서 突然變異體들의 形質의 分布와 短稈變異體들의 重要形質을 調査하여 얻어진 結果를 要約하면 다음과 같다. 1. 選拔된 短稈變異體들의 平均 稈長은 34.9㎝였고 7㎝에서 49㎝까지 分布되어 있었으며 母品種에 비해 약 20∼60㎝ 短稈化되었다. 2. M_2 全體集團의 出穗期는 母品種에 비해 대체로 늦어지는 경향이 었으나 出穗期가 21日 단축된 旱期出穗變異體를 選拔할 수 있었다. 3. M_2에서 不稔이삭은 17∼65%의 不稔率分布를 보였으며 20∼30%의 不稔率個體가 가장 많았다. 4. 短稈變異體들의 稈長과 穗長, 稈長과 穗當粒數, 穗長과 穗當粒數와는 正의 相關이 있었다. 5. 短稈變異體중에서 穗長과 穗當粒數가 母品種에 비해 同時에 增加된 系統의 選拔이 可能하였다. The purposes of the experiment were to investigate the distribution of characters of mutants selected from M_2 genaration of barley treated with gammaray, and relationships between different characters of short culm mutants. Culm length of short culm mutants averaged 34.9㎝, with a range from 7㎝ to 49㎝ in different lines and culm length of the mutants were shortened about 20∼60㎝ as compared to the mother variety. Although heading data of M_2 population is generally late than that of mother line, it was possible to select early mutants with different heading dates. Sterile percentage of the sterile spike mutants was ranged with 16∼65% in different lines and the frequency of the mutant plants having sterility of 20∼30% was highest among the different sterile plants. Positive correlations between culm and spike length, culm length and seed number per spike, spike length and seed number per spike were found in short culm mutant lines. Among the short culm mutants selected, some lines were increased in spike length and seed number per spike than mother lines.