根粒超着生ダイズ品種作系4号の生育・収量に対する高地下水位の影響

日本作物学会紀事

野々川 香織²  磯部 勝孝²  濱谷 耕介²  矢橋 里美²  矢作 洋樹²  石井 龍一²  高橋 幹¹ 

[1] 国際農林水産業研究センター;日本大学生物資源科学部

关键词: Flowering and seed-setting habit;    開花・結実習性;    High groundwater level;    高地下水位;    Number of pod;    莢数;    Sakukei 4;    作系4号;    Soybean (Glycine max (L.) Merr.);    ダイズ;   

DOI  :  10.1626/jcs.76.198

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

Supernodulating soybean cultivar "Sakukei 4" has a high nitrogen fixing activity. The yield of soybean is reduced under high groundwater-level conditions, but the reduction might be mitigated by using such cultivars. In this study, we investigated the yield of Sakukei 4 treated with a high groundwater level at different times, especially at the time of flowering and seed set. The cultivars Enrei and Sakukei 4 differed in the growth period during which a high ground water level treatment affected the number of flowers and seed weight. In both cultivars, the number of flowers and seed weight were decreased by the high ground water level treatment applied during the floral differentiation stage. The high ground water level treatment applied during the flowering time did not promote the falling of flowers and pods in Enrei, but promoted it in Sakukei 4. The main reason for the decrease in yield of Sakukei 4 was the falling of flowers and pods in high-order racemes and the decrease in the pod number. In this study, the use of supernodulating soybean cultivar Sakukei 4 did not mitigate the yield reduction under the high ground water level conditions at the time of flowering.

【 授权许可】

Unknown