A Rapid Method for the Determination of Nitrogen in Plant Tissue

Lindner, Robert; Harley, C. P.

doi:10.1126/science.96.2503.565

Cited by 163 publications

(82 citation statements)

References 2 publications

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“…Les teneurs des macroéléments (N, P, K, Ca, Mg) et oligoéléments (Fe, Cu, Zn, Mn) sont déterminées par des méthodes classiques [12]. L'azote est minéralisé dans l'acide sulfurique H 2 SO 4 en présence d'H 2 O 2 selon la méthode de Lindner [5]. Les autres éléments sont minéralisés par calcination de 2 g de matière sèche à 550 °C selon la méthode de Bonvalet [2].…”

Section: Introductionunclassified

Relations entre la qualité du liège, sa composition minérale et la composition minérale des feuilles du chêne-liège (Quercus suber L.)

Courtois

Masson

1999

Ann. For. Sci.

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Section: Introductionunclassified

Relations entre la qualité du liège, sa composition minérale et la composition minérale des feuilles du chêne-liège (Quercus suber L.)

Courtois

Masson

1999

Ann. For. Sci.

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“…Material for nitrogen and ash determinations was rapidly dried in a forced draft oven according to the method of LooMIs and SHULL (24). Dried tissue ground to 60 mesh was used for determination of total nitrogen including nitrates by the micro-Kjeldahl method of KOCH and MCMEEKIN (18) which has been found appropriate for plant tissue (8,20,42 and relatively stiff. The acute angle of insertion of the petiole w^ith the stem and the upward bending of the lamina to form a V-shaped position with the midrid were very characteristic ( fig.…”

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confidence: 99%

Effects of Photoperiod and Nitrogen Supply on Growth and Reproduction in the Gherkin

Hall¹

1949

Plant Physiol.

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In view of the fragmentary knowledge of and growing interest in the ontogeny of cueurbits, an experiment was undertaken to trace certain metabolic and formative processes during the life cycle of a representative species of this family. Though many species of cucurbits are known to be dayneutral in respect to flowering, their growth and certain aspects of reproduction are, nevertheless, known to be highly responsive to day lenlgth and nitrogen supply (10,11,12,38). Hence, contrasted conditions of day length and nitrogen nutrition were employed in the experiment in order to identify as far as possible plant responses associated with each of these variables. The common gherkin, Cucumis anguria (2), was selected for the experiment on the basis of the essentially day-neutral character of its flowering response, convenience of plant size and brevity of its life cycle.

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“…NH determined by the Nessler method, as described by Linder & Harley (1942). Reducing and total sugars were analyzed by the Somogy method (Cronin & Smith, 1979), in 95% (v/v) ethanol extracts.…”

Section: Measurementsmentioning

confidence: 99%

Plant architecture of Paspalum vaginatum schwartz modified by nitrate and ammonium nutrition

Beltrano

Ronco

Barreiro

et al. 1999

Pesq. agropec. bras.

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-Paspalum vaginatum Schwartz plants were grown under greenhouse conditions in a continuous-flow hydroponic culture, containing NO treatment, reducing and non-reducing sugars were decreasing together with a significant increase in amino acids content.NH -nutrition caused tillers to grow toward an orthogravitropic position (average angle of 68° with respect to the horizontal), and with -nutrition, tillers tended to become diagravitropic (average angle of 23°). With NH 4 NO 3 all the parameters measured had values in between those of the other two sources. Thus, the morphologic differences among plants growing inNH nutrition confirm the hypothesis that nitrogen source determines the growth habit of tillers in P. vaginatum by modulating the endogenous levels of reducing-non-reducing sugars. NH confirmam a hipótese segundo a qual a fonte de nitrogênio determina o hábito de crescimento das hastes em Paspalum vaginatum ao regular os níveis endógenos dos açúcares redutores e não-redutores.Termos para indexação: fonte de nitrogênio, ortogravitrópico, diagravitrópico, sucrose.

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A Rapid Method for the Determination of Nitrogen in Plant Tissue

Cited by 163 publications

References 2 publications

Relations entre la qualité du liège, sa composition minérale et la composition minérale des feuilles du chêne-liège (Quercus suber L.)

Relations entre la qualité du liège, sa composition minérale et la composition minérale des feuilles du chêne-liège (Quercus suber L.)

Effects of Photoperiod and Nitrogen Supply on Growth and Reproduction in the Gherkin

Plant architecture of Paspalum vaginatum schwartz modified by nitrate and ammonium nutrition

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