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Pattern of sulfate uptake during root elongation in maize: its correlation with productivity [Zea mays]

By: Contributor(s): Material type: ArticleArticleLanguage: En Publication details: 1980ISSN:
  • 0031-9317
Subject(s): DDC classification:
  • 80-567908
 In: Physiologia Plantarum v. 48, no. 3, p. 375-37880-567908Summary: The efficiency of sulfate uptake was evaluated in excised roots of 22 maize genotypes, 12 inbreds and 10 hybrids, in order to study the relationship between the kinetic characteristics of the uptake and the grain productivity. During root elongation, the uptake capacity showed a pulse which appeared when the root reached 1/3 to 1/2 of its final length. The size of the accumulated pool of sulfate was significantly correlated with the productivity. The kinetic parameters of the uptake, Vmax and Km, followed the same trend, showing pulses, whose maximum had the same position for Vmax and Km in each genotype. The variability with the genotype of the size and
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Article CIMMYT Knowledge Center: John Woolston Library AGRIS Collection 80-567908 (Browse shelf(Opens below)) 1 Available 80-567908
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10 ref. Summary (En)

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

The efficiency of sulfate uptake was evaluated in excised roots of 22 maize genotypes, 12 inbreds and 10 hybrids, in order to study the relationship between the kinetic characteristics of the uptake and the grain productivity. During root elongation, the uptake capacity showed a pulse which appeared when the root reached 1/3 to 1/2 of its final length. The size of the accumulated pool of sulfate was significantly correlated with the productivity. The kinetic parameters of the uptake, Vmax and Km, followed the same trend, showing pulses, whose maximum had the same position for Vmax and Km in each genotype. The variability with the genotype of the size and

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COMOD|John Wiley

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