臺灣地區水稻‘越光’品種內族群間變異之研究

Studies on Variation of 'Koshihikari' Populations in Taiwan

林孟輝(Meng-Huei Lin) ； 鄭隨和(Shui-Ho Cheng)

《桃園區農業改良場研究彙報》 71期 (2012/06) Pp. 1-16

https://doi.org/10.29567/ZHWHGX.201206.0001

摘要

日本水稻‘越光’品種自1956年命名，1977年引進臺灣種植，至今已三十餘年，為探討早期引進在臺灣各地區栽培多年之越光品種與近幾年引進的品種是否已產生生態型分化。本研究乃收集臺灣大面積種植越光之7個族群及日本3個族群，於2004年第一期作在桃園區農業改良場進行試驗。調查8個性狀結果，發現族群間差異顯著，尤其臺灣族群大都偏向穗數型；其次族群內各性狀相關程度亦因族群不同而有差異，顯示臺灣各越光族群已分化成不同的農業生態型。經分群及主成分分析結果，可分為三個類群：二林族群屬類群I；嘉義（I）、佐渡及新潟族群屬類群II；類群III包括大園、六甲、溪口（II）、嘉義（II）、溪口（I）及福島等族群。類群II又可分為兩個次類群：佐渡與新潟族群為次類群IIa；嘉義（I）族群為次類群IIb。類群III亦可分為二個次類群：溪口（I）及福島族群屬次類群IIIa；大園、六甲、溪口（II）及嘉義（II）族群屬次類群IIIb。

關鍵字

水稻 ； 越光 ； 外表型

並列摘要

The rice cultivar 'Koshihikari' registered in 1956 in Japan, has been introduced in 1977 and planted in Taiwan more than thirty years. The differentiation of ecotypes among ten Koshihikari populations (seven from Taiwan and three from Japan). Field experiments were conducted to investigate at Taoyuan DARES in first crop season of 2004. Results showed that there are significant different among 10 populations, for eight traits. Most Taiwan groups tended to panicle number type, and differentiated to different agricultural ecotype. Cluster analysis and the main effect analysis showed that ten populations can be divided into three groups. The first group includes only Erlin access. The second group includes Chiayi(I)、Sado and Niigata accesses. Dayuan、Lioujia、Sikou(II)、Chiayi(II)、 Sikou (I) and Fukushima accesses comprise the third group. The second group can be further divided into two sub-groups. Sub-group IIa includes Sado and Niigata accesses. Chiayi(I) access belongs to Sub-group IIb. The third group also can be divided into two sub-groups. Sub-group IIIa includes Sikou (I) and Fukushima accesses. Sub-group IIIb includes Dayuan、Lioujia、Sikou(II) and Chiayi(II) accesses.

並列關鍵字

rice ； koshihikari ； phenotype