関東系統の近縁係数によるイネ育成系統の分類および葉いもち, 食味との関連

日本作物学会紀事

吉田 智彦¹  太田 久稔²  安東 郁男² 

[1] 宇都宮大学農学部;農業・生物系特定産業技術研究機構

关键词: Breeding Lines;    育成系統;    Cluster Analysis;    クラスター分析;    Coefficient of Parentage;    近縁係数;    Eating Quality;    食味;    Genetic Background;    遺伝的背景;    Leaf Blast;    葉いもち;    Pedigree Analysis;    家系分析;    Rice;    イネ;   

DOI  :  10.1626/jcs.75.159

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The genetic background of the 229 ‘Kanto’ lines developed by National Institute of Crop Science was studied. Cluster analysis based on coefficients of parentage among the ‘Kanto’ lines revealed the presence of two groups. One consisted of the old breeding lines closely related with ‘Kotikaze’ and ‘Nipponbare’, and the other consisted of the new breeding lines highly related with ‘Koshihikari’, which has a superior eating quality and weak blast resistance, and has been used extensively as a cross parent. However, we found some lines that were not closely related with ‘Koshihikari’ in the new breeding lines. We examined how the coefficient of parentage with‘Koshihikari’ correlated with the eating quality and degree of the symptom of leaf blast in these 22 lines, and found that the coefficient was not closely correlated with the eating quality and resistance to leaf blast. It is possible to develop rice varieties that have a good eating quality, high resistance to diseases, and wide genetic background to avoid genetic vulnerability by breeding the lines not closely related with ‘Koshihikari’ but having a good eating quality and high resistance to leaf blast and introducing useful genes from foreign cultivars.

【 授权许可】

Unknown