トウモロコシとテオシント幼植物において湛水条件下で地表に生じる不定根量の系統変異と遺伝解析

日本作物学会紀事

村木 正則¹  間野 吉郎¹  藤森 雅博¹  高溝 正¹ 

[1]農業技術研究機構

关键词: Adventitious root;    不定根;    Genetic resource;    遺伝資源;    Maize;    トウモロコシ;    Seedling;    幼植物;    Teosinte;    テオシント;    Waterlogging;    耐湿性;   

DOI  :  10.1626/jcs.74.41

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Adventitious root-forming (ARF) ability, at the soil surface, is most important for adaptation of the plant to soil flooding or waterlogging. We evaluated the ARF ability of maize and teosinte seedlings under a waterlogged condition, and analyzed the mode of inheritance of the trait. The ARF ability was evaluated by the visual rating of root formation at the soil surface after exposure to flooding for 2 weeks. The ARF ability showed a wide variation among 43 maize and teosinte lines. In particular, teosinte showed a high ARF ability. The correlation coefficient between replications was 0.749, indicating the significant repeatability of the experiments. Two sets of F2 populations and F3 lines of B64 (low ARF ability) x Zea mays ssp. huehuetenangensis (high ARF ability) and B64 x Na4 (high ARF ability) showed continuous variation for the ARF ability, suggesting that this morphological trait was controlled by multiple genes. Heritabilities estimated from correlation coefficient and regression coefficient between F2 and F3 were 0.357 and 0.139 in the B64 x Z. mays ssp. huehuetenangensis cross and 0.405 and 0.301 in the B64 x Na4 cross, respectively.

【 授权许可】

Unknown