Cell Membrane Stability and Leaf Water Relations as Affected by Nitrogen Application in Maize (Zea mays L.)

[摘要] A field experiment was conducted to investigate the effect of N application on cell membrane stability measured by the polyethylene glycol test and leaf water relations in maize. With increasing N levels leaf water potential was decreased while total plant weight and cell membrane stability were increased. Osmotic potential decreased with increasing N levels in order to maintain turgor at lower water potential conditions. Sugar and K were identified as the major osmotic contributors in maize. Osmotic adjustment was evident while concentrations of sugar, K and amino acids in cell sap increased with increasing N application.

[学科分类] 农业科学（综合）

[关键词] Cell membrane stability;細胞膜安定性;Leaf water potential;浸透調整;Nitrogen nutrition;窒素栄養;Osmotic adjustment;トウモロコシ (Zea mays. L.);Zea mays;葉の水ポテンシャル