Role of nitrate in regulating germination of Sinapis arvensis L. (wild mustard)

J. STEPHEN GOUDEY, H. S. Saini, M. S. SPENCER

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Depending on the applied concentration, nitrate can either stimulate or inhibit germination of dormant seeds of Sinapis arvensis L. (wild mustard). Seed NO 3 levels that corresponded to the maximal germination frequencies recorded, ranged from 0.3 to 4.4 nmol seed−1 for applied NO 3 concentrations between 2.5 and 20 mol m−3. Germination was significantly lower in seeds containing more than 5 nmol NO 3. Although the presence of NO 3 within the seed was required to promote germination, seed NO 3 levels were 5 to 15 times less than levels calculated from the volume of solution taken up by the seeds. Seed NO 3 levels also responded in a passive fashion to the external NO3 concentration when the seeds were incubated on filter paper or in soil. In a representative soil containing 26 mg NO 3‐N per kg dry weight and 8 to 16% water by weight, the amount of NO 3 taken up by the seeds reached inhibitory levels. Our results suggest that levels of inorganic nitrogen (NO 3, NH+ 4) in managed soils may play an important role in regulating germination of dormant S. arvensis seeds.

Original languageEnglish
Pages (from-to)9-12
Number of pages4
JournalPlant, Cell & Environment
Volume11
Issue number1
DOIs
Publication statusPublished - 1 Jan 1988
Externally publishedYes

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Sinapis
Sinapis arvensis
Mustard Plant
Germination
Nitrates
Seeds
nitrates
germination
seeds
Soil
seed germination
soil
Weights and Measures
Nitrogen

Cite this

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title = "Role of nitrate in regulating germination of Sinapis arvensis L. (wild mustard)",
abstract = "Depending on the applied concentration, nitrate can either stimulate or inhibit germination of dormant seeds of Sinapis arvensis L. (wild mustard). Seed NO− 3 levels that corresponded to the maximal germination frequencies recorded, ranged from 0.3 to 4.4 nmol seed−1 for applied NO− 3 concentrations between 2.5 and 20 mol m−3. Germination was significantly lower in seeds containing more than 5 nmol NO− 3. Although the presence of NO− 3 within the seed was required to promote germination, seed NO− 3 levels were 5 to 15 times less than levels calculated from the volume of solution taken up by the seeds. Seed NO− 3 levels also responded in a passive fashion to the external NO3 − concentration when the seeds were incubated on filter paper or in soil. In a representative soil containing 26 mg NO− 3‐N per kg dry weight and 8 to 16{\%} water by weight, the amount of NO− 3 taken up by the seeds reached inhibitory levels. Our results suggest that levels of inorganic nitrogen (NO− 3, NH+ 4) in managed soils may play an important role in regulating germination of dormant S. arvensis seeds.",
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Role of nitrate in regulating germination of Sinapis arvensis L. (wild mustard). / GOUDEY, J. STEPHEN; Saini, H. S.; SPENCER, M. S.

In: Plant, Cell & Environment, Vol. 11, No. 1, 01.01.1988, p. 9-12.

Research output: Contribution to journalArticle

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N2 - Depending on the applied concentration, nitrate can either stimulate or inhibit germination of dormant seeds of Sinapis arvensis L. (wild mustard). Seed NO− 3 levels that corresponded to the maximal germination frequencies recorded, ranged from 0.3 to 4.4 nmol seed−1 for applied NO− 3 concentrations between 2.5 and 20 mol m−3. Germination was significantly lower in seeds containing more than 5 nmol NO− 3. Although the presence of NO− 3 within the seed was required to promote germination, seed NO− 3 levels were 5 to 15 times less than levels calculated from the volume of solution taken up by the seeds. Seed NO− 3 levels also responded in a passive fashion to the external NO3 − concentration when the seeds were incubated on filter paper or in soil. In a representative soil containing 26 mg NO− 3‐N per kg dry weight and 8 to 16% water by weight, the amount of NO− 3 taken up by the seeds reached inhibitory levels. Our results suggest that levels of inorganic nitrogen (NO− 3, NH+ 4) in managed soils may play an important role in regulating germination of dormant S. arvensis seeds.

AB - Depending on the applied concentration, nitrate can either stimulate or inhibit germination of dormant seeds of Sinapis arvensis L. (wild mustard). Seed NO− 3 levels that corresponded to the maximal germination frequencies recorded, ranged from 0.3 to 4.4 nmol seed−1 for applied NO− 3 concentrations between 2.5 and 20 mol m−3. Germination was significantly lower in seeds containing more than 5 nmol NO− 3. Although the presence of NO− 3 within the seed was required to promote germination, seed NO− 3 levels were 5 to 15 times less than levels calculated from the volume of solution taken up by the seeds. Seed NO− 3 levels also responded in a passive fashion to the external NO3 − concentration when the seeds were incubated on filter paper or in soil. In a representative soil containing 26 mg NO− 3‐N per kg dry weight and 8 to 16% water by weight, the amount of NO− 3 taken up by the seeds reached inhibitory levels. Our results suggest that levels of inorganic nitrogen (NO− 3, NH+ 4) in managed soils may play an important role in regulating germination of dormant S. arvensis seeds.

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