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Effect of potassium on growth and nitrate reductase during water stress and recovery in maize [zea mays, water potential]

By: Contributor(s): Material type: ArticleArticleLanguage: En Publication details: 1980ISSN:
  • 0031-9317
Subject(s): DDC classification:
  • 81-606952
 In: Physiologia Plantarum v. 49, no. 4, p. 495-50081-606952Summary: The effect of potassium (0, 50, 100 and 200 mg/pot) was studied on growth characteristics and nitrate reductase activity in maize (Zea mays) seedlings during water stress and subsequent recovery. In irrigated plants K('+) increased the rate of leaf area expansion, leading to increased leaf area per plant. Increased leaf area was associated with decreased chlorophyll content. Water stress (-15 bars) enhanced the stomatal resistance of leaves which was further accentuated by K('+) application. Nitrate reductase activity rose in irrigated plants 24 h after K('+) application. Subsequently, as water stress developed, K('+) helped to maintain higher NR activity
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5 ill., 5 tables; 16 ref. Summary (En)

Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0031-9317

The effect of potassium (0, 50, 100 and 200 mg/pot) was studied on growth characteristics and nitrate reductase activity in maize (Zea mays) seedlings during water stress and subsequent recovery. In irrigated plants K('+) increased the rate of leaf area expansion, leading to increased leaf area per plant. Increased leaf area was associated with decreased chlorophyll content. Water stress (-15 bars) enhanced the stomatal resistance of leaves which was further accentuated by K('+) application. Nitrate reductase activity rose in irrigated plants 24 h after K('+) application. Subsequently, as water stress developed, K('+) helped to maintain higher NR activity

English

COMOD|John Wiley

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