Tobacco Seedlings: Damage by Excessive Nitrogen Lessened by Added Phosphorus
Tobacco Seedlings: Damage by Excessive Nitrogen Lessened by Added Phosphorus
复制标题
烟草幼苗：添加磷可以减轻过量氮的损害
DOI：
10.1126/science.151.3706.106
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发表时间：
1966
期刊：
影响因子：
56.9
通讯作者：
R. Ojha
中科院分区：
文献类型：
--
作者：
N. Pal;R. Ojha
氮浓度（如硝酸铵）每公顷50千克或更高对烟草幼苗有毒;症状是生长不良和白色叶子。与生长在低氮培养基中的幼苗相比，叶片的叶绿素（尤其是叶绿素a）明显减少，胡萝卜素和叶黄素增加。这些不良反应因磷的供应不足而加剧;它们可以通过更自由的磷供应来抵消。
Concentrations of nitrogen (as ammonium nitrate) of 50 kilo-grams per hectare and greater are toxic to tobacco seedlings; symptoms are poor growth and white leaves. The leaves have markedly less chlorophylls (especially chlorophyll a) and more carotene and xanthophyll than seedlings grown in media low in nitrogen. These ill eflects are aggravated by short supply of phosphorus; they can be counteracted by more liberal supply of phosphorus.