Effects of Waterlogging on Nitrogen Fixation and Photosynthesis in Supernodulating Soybean Cultivar Kanto 100
スポンサーリンク
概要
- 論文の詳細を見る
The supernodulating soybean (<I>Glycine max</I> (L.) Merr.) cultivar Kanto 100 was previously characterized by superior nitrogen (N) fixation and photosynthesis, and resulting in high yields. However, this cultivar seems to be susceptible to waterlogging during the vegetative growth stage, which frequently occurs in major soybean producing areas in East Asia. The objective of this study was to compare the effects of waterlogging on nodulation, N fixation and photosynthesis in Kanto 100 with those in its normally-nodulating ancestral cultivar Enrei. Kanto 100 and Enrei were grown in pots, and subjected to waterlogging for 10 days at three vegetative growth stages in 2003 and 2004. Waterlogging significantly reduced the number of nodules of both cultivars, but the magnitude of the reduction was more pronounced in Kanto 100. The acetylene reduction activity (ARA) of nodules and apparent photosynthetic rate (AP) of leaves were generally depressed immediately after the start of waterlogging, but both functions recovered substantially at the pod-filling stage in both cultivars. No marked cultivar difference was found in the magnitude of the reduction of ARA per plant and AP measured immediately after waterlogging and at the pod-filling stage in both years, but growth impairment was more pronounced in Kanto 100 in 2003. These results suggest that the supernodulating cultivar Kanto 100 is more susceptible to waterlogging than its normally-nodulating ancestral cultivar.
- 日本作物学会の論文
日本作物学会 | 論文
- レイメイとキヨニシキの出葉特性に関する二, 三の知見
- 91 冷害実験装置による水稲の冷害再現試験
- 水稲機械移植栽培の作期と生育収量について
- 42 低水温処理が水稲の生育収量ならびに根の機能におよぼす影響 : 3. 不稔発生様相等に現れた苗間の差異
- 機械移植による晩植水稲の生育相 : 第2報 出穂および諸形質への影響