ビール大麦における低砕粒率系統育成のための選抜技術の開発と， ホルドインドリン遺伝子型の効果

日本作物学会紀事

河田 尚之³  沖山 毅²  山口 昌宏²  高山 敏之²  長嶺 敬¹  五月女 敏範² 

[1] 近畿中国四国農業研究センター;栃木県農業試験場栃木分場;九州沖縄農業研究センター

关键词: Grain weight;    粒重;    Hordoindoline;    ホルドインドリン;    Kernel hardness;    原麦硬度;    Malting barley;    ビール大麦;    Pearling quality;    精麦品質;    Rate of cracked grains;    砕粒率;    Regression formula;    回帰式;   

DOI  :  10.1626/jcs.81.292

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

We analyzed the causes of the occurrence of cracked grains and the impact of hordoindoline genotypes on it in two-row barley. The rate of cracked grains, was correlated with the kernel hardness (r=−0.608**), and grain weight (r=0.588**). Therefore, we created a regression formula for the estimation of the rate of cracked grains by using kernel hardness and grain weight as the variables. Next, we confirmed that compared with the lineages of barley carrying the hordoindoline gene Hinb-2a, the lineages of the Hinb-2b had higher kernel hardness, required a longer time for parling the grains, and showed a lower rate of cracked grains, and a lower degree of whiteness. When the regression formula was applied to the progeny lineages, we were able to select lineages with low rates of cracked grains at a proportion of approximately 75% in the Hinb-2a genotype lineage group. Meanwhile, in the Hinb-2b genotype lineage group, we were able to select lineages with low rates of cracked grains at a proportion of approximately 70%, though their heritability and improving effect were low. To promote the barley breeding, it is useful to conduct a primary selection of Hinb-2a genotypes by using the regression formula and to select those with a low rate of cracked grains, or to select the Hinb-2b genotype with a shorter parling time and higher degree of whiteness.

【 授权许可】

Unknown