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

Effects of supplemental light duration on greenhouse tomato (Lycopersicon esculentum Mill.) plants and fruit yields

1998 ◽  
Vol 74 (4) ◽  
pp. 295-306 ◽  
Author(s):  
Dominique-André Demers ◽  
Martine Dorais ◽  
Chris H Wien ◽  
André Gosselin
Keyword(s):  
Lycopersicon Esculentum ◽  
Greenhouse Tomato ◽  
Lycopersicon Esculentum Mill ◽  
Light Duration

scholarly journals Changes of the genetic constitution of the tomato plants by «gamma-fusion» of Lycopersicon esculentum Mill, and Lycopersicon peruvianum var. dentatum dun. protoplasts

1991 ◽  
Vol 7 (4) ◽  
pp. 82-91
Author(s):  
Ya. I. Ratushnyak ◽  
N. M. Piven ◽  
S. A. Latypov ◽  
A. M. Samoylov ◽  
A. V. Zavgorodnyaya ◽  
...  
Keyword(s):  
Lycopersicon Esculentum ◽  
Genetic Constitution ◽  
Lycopersicon Peruvianum ◽  
Tomato Plants ◽  
Lycopersicon Esculentum Mill

scholarly journals Yield of Greenhouse Tomato with Constant or Intermittent Heating of the Root and Shoot

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 607d-607
Author(s):  
M.P.N. Gent ◽  
Y.-Z. Ma
Keyword(s):  
Lycopersicon Esculentum ◽  
Diurnal Variation ◽  
Air Temperature ◽  
Root Zone ◽  
Constant Heat ◽  
Greenhouse Tomato ◽  
Air Temperatures ◽  
Intermittent Heating ◽  
Tomato Cultivars ◽  
Constant Heating

Is intermittent heating of the root zone more beneficial than constant heating for production of greenhouse tomato (Lycopersicon esculentum Mill), with diurnal variation of air temperature (DIF)? Yields were compared with 14°C day/14°C night or 22°C day/6°C night minimum air temperatures, resulting in 5 and 14°C DIF. The root zone was unheated or was heated to 20°C constantly or for 6 hours in the day, or 6 hours in the night. The greenhouse tomato cultivars Buffalo and Caruso were transplanted in early and late March in 1994 and 1995. Averaged over both years and cultivars, the yield from early March planting with 14°C DIF was greater than with 5°C DIF, 6.6 and 6.1 kg/plant, respectively, due to an increase in weight per fruit and to earlier ripening. Root zone heat increased yield compared to no heat, due to a greater number of fruit. With 5°C DIF, yields with constant and intermittent root zone heat were similar. The yields were 5.4, 6.4, 6.2, and 6.2 kg/plant with none, day, night and constant heat, respectively. With 14°C DIF, there were larger differences in yield, 5.7, 7.0, 6.6, and 7.1 kg/plant with none, day, night and constant root zone heat, respectively. However, interactions between air and root heat regimes were not statistically significant. The yield from late March planting was greater with 14°C than with 5°C DIF, but root zone heat had no effect. Research supported in part by grant 93-37100-9101 from NRI Competitive grants program/USDA.

scholarly journals Effects of Fosetyl-Al, a fungicide on meiosis of Lycopersicon esculentum Mill.

1970 ◽  
Vol 39 (2) ◽  
pp. 237-240 ◽  
Author(s):  
Ilkay Özturk Çali ◽  
Teoman Kesercioglu
Keyword(s):  
Lycopersicon Esculentum ◽  
Phytophthora Infestans ◽  
Key Words ◽  
Recommended Dosage ◽  
Tomato Plants ◽  
Lycopersicon Esculentum Mill

Effects of Fosetyl-Al (80% Aliette WG 800), widely applied on tomato plants (Lycopersicon esculentum Mill.) grown in greenhouse against Phytophthora infestans revealed that at recommended dosage (200 g/100 l water) and the double dosage (400 g/100 l water), the fungicide causes various anomalies in pollen meiosis. Key words: Fosetyl-A;, Fungicide; Lycopersicon esculentum; Meiosis; Pollens DOI: 10.3329/bjb.v39i2.7486 Bangladesh J. Bot. 39(2): 237-240, 2010 (December)

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