INFLUENCE OF IRRADIANCE-PHOTOPERIOD COMBINATION ON TOMATO MINERAL NUTRITION

1987 ◽  
Vol 67 (2) ◽  
pp. 559-566 ◽  
Author(s):  
NICOLAS TREMBLAY ◽  
MARC-J. TRUDEL ◽  
ANDRÉ GOSSELIN
Keyword(s):  
High Pressure ◽  
Lycopersicon Esculentum ◽  
Major Ions ◽  
Reductase Activity ◽  
Nitrogen Concentration ◽  
Natural Light ◽  
Mineral Uptake ◽  
Tomato Plants ◽  
Lycopersicon Esculentum Mill ◽  
Supplementary Lighting

The irradiance-photoperiod combination was modified in an attempt to enhance the mineral uptake of tomato plants (Lycopersicon esculentum Mill. ’Marone’). Tomato plants grown in natural light were compared to plants receiving 7.56 × 105 J m−2 d−1 (400–700 nm) of high-pressure sodium (HPS) supplementary light provided at either low irradiance-long photoperiod (LILP) or high irradiance-short photoperiod (HISP). The LILP treatment promoted the greatest uptake of most major ions followed by natural light and HISP-grown plants, respectively. Supplementary lighting increased Mg concentration in the top and affected K concentration within plants differentially depending on the plant part analyzed. Nitrogen concentration in the shoot below the second flower cluster (midsection of top growth) and Ca concentration in the roots varied depending on the combination of irradiance-photoperiod. Phosphorus concentrations were not affected. Iron and Mn uptake tended to be depressed by HPS treatments. The results are consistent with the hypothesis which relates nutrient uptake to nitrate reductase activity (NRA), although NRA was not specifically measured in this experiment.Key words: Tomato, nutrition, high-pressure sodium, supplementary lighting, mineral uptake, Lycopersicon esculentum Mill.

INFLUENCE DU NIVEAU D’IRRADIANCE D’APPOINT (HPS) EN PEPINIERE SUR LA CROISSANCE ET LA PRODUCTIVITE D’UNE CULTURE DE TOMATE DE SERRE.

1986 ◽  
Vol 66 (4) ◽  
pp. 961-970 ◽  
Author(s):  
CLAIRE BOIVIN ◽  
MARC-J. TRUDEL ◽  
ANDRÉ GOSSELIN
Keyword(s):  
Lycopersicon Esculentum ◽  
Dry Weight ◽  
Natural Light ◽  
Tomato Plants ◽  
The Third ◽  
Lycopersicon Esculentum Mill ◽  
Shoot Dry Weight ◽  
Seeding Date ◽  
Supplementary Lighting ◽  
Natural Irradiance

Tomato plants (Lycopersicon esculentum Mill. ’Vendor’) were seeded at three different dates between 23 Jan. and 17 Feb. 1984. Young tomato plants received the following supplementary lighting treatments: natural light only, and natural irradiance supplemented by 10, 20 or 30 W m−2 (PAR) for a photoperiod of 17 h. Twenty-nine days after the first seeding date, shoot dry weight of plants grown under 10, 20 or 30 W m−2 was, respectively, 311, 378 and 458% of the control. Shoot dry weight of the third seeding was 159, 181 and 207% of the control for the 10-, 20- or 30-W m−2 treatments, respectively. Early yields were increased by 19,4, 31,2 and 42% when tomato transplants received 10, 20 or 30 W m−2. Total yields were not significantly affected by supplementary lighting provided in the nursery period.Key words: Tomato, supplementary light, growth, productivity, HPS, Lycopersicon esculentum Mill.

EFFETS A LONG TERME DE L’ENRICHISSEMENT CARBONÉ SUR LA TOMATE DE SERRE CULTIVÉE AVEC OU SANS ÉCLAIRAGE D’APPOINT

1987 ◽  
Vol 67 (3) ◽  
pp. 899-907 ◽  
Author(s):  
SERGE YELLE ◽  
ANDRE GOSSELIN ◽  
MARC-J. TRUDEL
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Lycopersicon Esculentum ◽  
Water Use ◽  
Synergetic Effect ◽  
Growth Yield ◽  
Lycopersicon Esculentum Mill ◽  
Supplementary Lighting

Tomato (Lycopersicon esculentum Mill. ’Vedettos’) was grown under three different concentrations of atmospheric CO2 (330, 900 and 1500 ppm) and two lighting intensities (natural and natural plus 30 W m−2 (PAR)) provided by high-pressure sodium lights (HPS). Results show a reduction in CO2 efficiency after eight weeks of enrichment. The higher the CO2 concentration, the more serious is this reduction. Our results show the potential of CO2 enrichment and supplementary lighting as well as their synergetic effect on productivity (yield increases of 32, 73 and 122%, respectively). Supplementary lighting does not compensate for the reduction of CO2 efficiency. Concentrations of 900 and 1500 ppm increased the plants’ water-use efficiency.Key words: Carbon dioxide, tomato, greenhouse, growth, yield

scholarly journals Fate of nitrogen-15 in the subsequent growing season of greenhouse tomato plants (Lycopersicon esculentum Mill) as influenced by alternate partial root-zone irrigation

RSC Advances ◽  
2017 ◽  
Vol 7 (55) ◽  
pp. 34392-34400 ◽  
Author(s):  
Maomao Hou ◽  
Fenglin Zhong ◽  
Qiu Jin ◽  
Enjiang Liu ◽  
Jie Feng ◽  
...  
Keyword(s):  
Lycopersicon Esculentum ◽  
Root Zone ◽  
Growing Season ◽  
Tomato Plants ◽  
Residual Nitrogen ◽  
Greenhouse Tomato ◽  
Lycopersicon Esculentum Mill ◽  
Crop Uptake ◽  
Previous Season ◽  
Fate Of Nitrogen

Alternate partial root-zone irrigation has profound impacts on the crop uptake of residual nitrogen originated from the previous season.

INFLUENCE DE LA TEMPERATURE DU SUBSTRAT ET DE LA FERTILISATION AZOTEE SUR LA CROISSANCE, LE DEVELOPPEMENT, LA TENEUR EN AZOTE ET L’ACTIVITE DE LA NITRATE REDUCTASE CHEZ LA TOMATE

1984 ◽  
Vol 64 (1) ◽  
pp. 181-191 ◽  
Author(s):  
ANDRÉ GOSSELIN ◽  
FRANÇOIS-P. CHALIFOUR ◽  
MARC J. TRUDEL ◽  
GHISLAIN GENDRON
Keyword(s):  
Lycopersicon Esculentum ◽  
Nitrate Reductase ◽  
Nitrogen Content ◽  
Nitrate Reductase Activity ◽  
Root Zone ◽  
Reductase Activity ◽  
Dry Weight ◽  
Fruit Weight ◽  
Root Zone Temperature ◽  
Lycopersicon Esculentum Mill

We measured the effects of five root temperatures (12, 18, 24, 30 and 36 °C) and five rates of nitrogen fertilization (0, 2.5, 7.5, 22.5 and 67.5 meq N∙L−1) on growth, development, nitrogen content and nitrate reductase activity of tomato plants (Lycopersicon esculentum Mill. ’Vendor’). The greatest root dry weight was obtained at 18 °C and 2.5 meq N∙L−1 and the highest shoot dry weight at 24 °C and 22.5 meq N∙L−1. Total fruit weight was maximum at 24 °C and 2.5 meq N∙L−1. High root temperatures and high levels of fertilization increased the number of aborted flowers and the nitrogen content of shoots, but reduced tomato yields. Nitrate reductase activity (NRA) was higher in leaves than in roots and with plants receiving 22.5 meq N∙L−1 as compared to 2.5 meq. NRA in roots decreased as temperature increased.Key words: Lycopersicon esculentum Mill., root zone temperature, nitrate reductase, nitrogen

scholarly journals Fe3+-Chelate Reductase Activity of Plasma Membranes Isolated from Tomato (Lycopersicon esculentum Mill.) Roots

1991 ◽  
Vol 97 (2) ◽  
pp. 537-544 ◽  
Author(s):  
Marcia J. Holden ◽  
Douglas G. Luster ◽  
Rufus L. Chaney ◽  
Thomas J. Buckhout ◽  
Curtis Robinson
Keyword(s):  
Lycopersicon Esculentum ◽  
Plasma Membranes ◽  
Reductase Activity ◽  
Lycopersicon Esculentum Mill
Sign in / Sign up

Export Citation Format

Share Document