scholarly journals Isolation and partial purification of thymidlit synthease enzyme from Calus lettuce plant (Lactuca sativa, L.)

2007 ◽  
Vol 19 (2) ◽  
pp. 1-11
Author(s):  
Sajida Aboud ◽  
Qusay Al-Chalabi ◽  
Abed Mohammed
Keyword(s):  
Lactuca Sativa ◽  
Partial Purification ◽  
Lettuce Plant ◽  
Lactuca Sativa L

scholarly journals EVALUATION OF METEOROLOGICAL ELEMENTS AND LETTUCE (Lactuca sativa, L.) YIELD RELATED TO GEOGRAPHIC ORIENTATION OF POLYETHYLENE GREENHOUSES

Irriga ◽  
2002 ◽  
Vol 7 (3) ◽  
pp. 176-184
Author(s):  
Cláudio Marcio Pereira de Souza ◽  
Antonio Evaldo Klar ◽  
Luiza Helena Duenhas
Keyword(s):  
Lactuca Sativa ◽  
Irrigation System ◽  
Sao Paulo ◽  
São Paulo ◽  
Lettuce Plant ◽  
Plant Yield ◽  
Agricultural Engineering ◽  
Lactuca Sativa L ◽  
Engineering Department ◽  
Meteorological Elements

EVALUATION OF METEOROLOGICAL ELEMENTS AND LETTUCE (Lactuca sativa, L.) YIELD RELATED TO GEOGRAPHIC ORIENTATION OF POLYETHYLENE GREENHOUSES   Cláudio Márcio Pereira de SouzaAntonio Evaldo Klar*Department of Agricultural Engineering, College of Agricultural Sciences, State University of São Paulo, P.O. 237, CEP 18603-970, Botucatu – SP. E-mail: [email protected]* Scientific Researcher of CNPqLuiza Helena DuenhasEMBRAPA Semi Árido, P.O. 23, CEP 56300–970, Petrolina – PE.   1 ABSTRACT  This experiment was carried out at the Agricultural Engineering Department, FCA/UNESP, Botucatu–SP aiming to study  the geographic orientation influence of two plastic tunnels (East/West and North/South based on the magnetic North) on lettuce plant (Lactuca sativa L, cv. Elisa) behavior and on the evaporation distribution uniformity inside the tunnels. The plants were sowed on 05/05/1999, transplanted on 05/29/1999 and harvested on 06/31/1999. Tensiometers were used to monitore soil water potentials. A drip irrigation system was used. Both tunnels received A Class pan and thermohygrographes in the center and 3 m apart small evaporimeters set at 3 heights (0.50 m, 1.00 m and 1.50 m). Through geostatistical analysis, there was not neither spatial dependency nor spatial variability of evaporation in both tunnels. However, the height of evaporimeters showed statistical differences: the 1.50 m height evaporimeter had slower evaporation than those from other heights. The air temperature, relative humidity and vapor pressure deficit averages were not statistically significant in both greenhouses when they were compared to those from the outside. A Class pan evaporation values were higher outside the tunnels than inside them, but there were no differences between both tunnels for this variable. The lettuce plant yield was not influenced by tunnel orientation, but there were significant differences on plant yield among beds inside each tunnel.  Keywords: evaporation, irrigation, greenhouse.   SOUZA, C. M. P., KLAR, A. E., DUENHAS, L. H. AVALIAÇÃO DE ELEMENTOS METEOROLÓGICOS E PRODUÇÃO DE ALFACE (Lactuca sativa L.) AFETADOS PELA ORIENTAÇÃO GEOGRÁFICA DE ESTUFAS DE POLIETILENO.   2 RESUMO  O experimento foi realizado na área experimental do Departamento de Engenharia Rural da Faculdade de Ciências Agronômicas – Unesp/Botucatu, Estado de São Paulo, em duas estufas dispostas em diferentes orientações geográficas, Leste/Oeste e Norte/Sul. A alface (Lactuva sativa L.) cv. Elisa foi cultivada em ambas estufas, sendo semeada em 05/05/99, transplantada em 29/05/99 e colhida em 31/06/99. Utilizou-se tensiômetros para monitorar o potencial de água no solo para realizar o manejo do sistema de irrigação por gotejamento. Microevaporímetros eqüidistantes de 3 m e colocados em 3 alturas, 0.50, 1.00 e 1.50 m, termohigrógrafos e tanques Classe “A” foram instalados nas duas estufas. Através de análise geoestatística, não se observou dependência espacial nem variabilidade espacial da evaporação nas duas estufas. Entretanto, a altura dos evaporímetros apresentou diferenças significativas: a evaporação à altura de 1.50 foi menor que nas outras duas.As médias de temperatura, umidade relativa e déficit de pressão de vapor do arnão diferiram estatisticamente entre as estufas e o ambiente externo. Os valores médios de evaporação de água no tanque Classe “A” instalado fora das estufas diferiram estatisticamente quando comparados com os instalados no interior das estufas, porém, entre as orientações não se constatou diferença significativa. Pôde-se verificar que não houve diferença significativa das características agronômicas da alface em ambas orientações estudadas. No entanto, houve diferença significativa para essas características entre os canteiros no interior das mesmas, havendo variância espacial para os dados de matéria fresca apenas na estufa N/S.  UNITERMOS: evaporação, irrigação, estufa.

Effect of Vermicompost on the Growth and Yield of Lettuce Plant (Lactuca sativa L. var. crispa)

2018 ◽  
Vol 21 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Sevinç Adiloğlu ◽  
Funda Açıkgöz ◽  
Yusuf Solmaz ◽  
Ece Çaktü ◽  
Aydın Adiloğlu
Keyword(s):  
Lactuca Sativa ◽  
Growth And Yield ◽  
Lettuce Plant ◽  
Lactuca Sativa L

scholarly journals The effect of vermicompost application on the growth of lettuce plant (Lactuca sativa L.)

2019 ◽  
Vol 1402 ◽  
pp. 033050
Author(s):  
B Frasetya ◽  
K Harisman ◽  
S Maulid ◽  
S Ginandjar
Keyword(s):  
Lactuca Sativa ◽  
Lettuce Plant ◽  
Lactuca Sativa L

The Effect of Soybean Pulp Planting Media Use on the Growth and Production of Lettuce Plants (Lactuca Sativa L.)

Nabatia ◽  
2016 ◽  
Vol 4 (1) ◽  
pp. 25-35
Author(s):  
Ahmad Mauludin Zakaria ◽  
Agus Miftakhurrohmat
Keyword(s):  
Lactuca Sativa ◽  
Block Design ◽  
Single Factor ◽  
Lettuce Plant ◽  
Lactuca Sativa L ◽  
Randomized Block Design ◽  
Best Response ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Single Factor Experiment

This study aims to determine the effect of the use of tofu dregs growing media on the growth and production of lettuce (Lactuca sativa L.). The study was conducted in July 2015 to September 2015 on polybag land in Kedung Peluk Village, Candi District, Sidoarjo Regency. This place is 20 m above sea level. A single factor experiment was arranged in a Randomized Block Design with 10 levels of combination treatment between soybean pulp and soil consisting of A1 = 0% soybean pulp and 100% soil, A2 = 10% soybean pulp and 90% soil, A3 = 15% soybean pulp and 85% soil, A4 = 20% soybean pulp and 80% soil, A5 = 25% soybean pulp and 75% soil, A6 = 30% soybean pulp and 70% soil, A7 = 35% soybean pulp and 65% soil, A8 = 40% soybean pulp and 60% soil, A9 = 45% soybean pulp and 55% soil, A10 = 50% soybean pulp and 50% soil. From the ten treatments, it was repeated 3 times and obtained 30 units of trials. The results showed that the treatment of using soybean pulp media with a combination of 20% soy- bean pulp and 80% soil gave the best response to lettuce plant growth, namely on plant height, leaf width, number of leaves, root length, wet weight of the upper part of the plant and total weight.

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