北陸研究センターで育成した水稲品種系統の家系分析

日本作物学会紀事

笹原 英樹²  重宗 明子²  吉田 智彦¹  後藤 明俊²  三浦 清之² 

[1]宇都宮大学農学部

[2]農業・生物系特定産業技術研究機構中央農業総合研究センター

关键词: Breeding cultivars of Rice;    水稲育成品種;    Coefficient of relationship;    近縁係数;    Eating quality;    食味;    Genetic Diversity;    遺伝的多様性;    Pedigree analysis;    家系分析;   

DOI  :  10.1626/jcs.75.153

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

To understand the genetic diversity of rice cultivars and to establish a breeding system to accumulate superior traits, we performed pedigree analysis of the varieties bred for over 80 years in Hokuriku National Agricultural Experiment Station(143 varieties). The total number of ancestors increased from 1980s and doubled during the last 10 years, and the number of lines in the yield test was 1122. The Hokuriku lines had only a few ancestors. The average of the coefficient of parentage between Koshihikari and the 16 Hokuriku Lines used for the yield test was 0.463. The coefficients of parentage between Koshihikari and these 16 Hokuriku Lines were not significantly correlated with eating quality. Since 86% of the breeding lines in the yield test (44 lines) were progeny of Kinuhikari, Kinuhikari descended from Koshihikari was considered to have contributed to improvement of eating quality in rice breeding.

【 授权许可】

Unknown