二条オオムギ品種における近縁係数と分子マーカーから推定した遺伝的距離との関係

日本作物学会紀事

吉田 智彦¹  内村 要介²  古庄 雅彦² 

[1] 宇都宮大学;福岡県農業総合試験場

关键词: Barley;    二条オオムギ;    Coefficient of parentage;    近縁係数;    Cultivar;    品種;    Genetic distance;    遺伝的距離;    Molecular marker;    分子マーカー;   

DOI  :  10.1626/jcs.73.410

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Genetic relationships between cultivars are estimated either by coefficient of parentage, which is calculated using the database of cultivars lineage, or from genetic distance, which is calculated based on DNA polymorphism using the molecular markers. In this study, Euclidean distances and Nei's genetic distances among 22 barley cultivars were calculated using moleculer markers. The result of cluster analysis based on Eucedian distances was well explained by lineages of respective cultivars. A significant correlation (-0.526 ndash; -0.650) between the coefficients of parentage and the Nei's genetic distances was found among 22 modern cultivars grown in Japan. Thus, the validity of the coefficients of parentage between two cultivars, which are calculated assuming that cultivars derived from the crossing have half of the genetic materials of each parent, was supported by the genetic distance estimated from DNA polymorphism. On the other hand, the alleles detected by the molecular markers in this study were supposed to be nearly equally distributed to the offspring in the breeding process.

【 授权许可】

Unknown