scholarly journals Drought adaptation strategies of four grapevine cultivars (Vitis vinifera L.): modification of the properties of the leaf area

OENO One ◽  
2003 ◽  
Vol 37 (3) ◽  
pp. 131 ◽  
Author(s):  
María Gómez-del-Campo ◽  
C. Ruiz ◽  
Pilar Baeza ◽  
José Ramón Lissarrague
Keyword(s):  
Vitis Vinifera ◽  
Leaf Area ◽  
Stomatal Density ◽  
Adaptation Strategies ◽  
Drought Adaptation ◽  
Lateral Shoot ◽  
Water Limitation ◽  
Lateral Shoots ◽  
Number Of Leaves ◽  
Anatomical Properties

<p style="text-align: justify;">This essay studies the morphological and anatomical properties of the leaves of Garnacha tinta, Tempranillo, Chardonnay and Airén grapevines in order to discover the drought adaptation strategies present in <em>Vitis vinifera</em> L. The grapevines were grown under two water availability conditions: water limitation and non-water limitation. There was a significantly lower development of leaf area under conditions of water limitation compared to non-water limitation due to a reduction in the size of main and lateral shoot leaves, and a smaller number of leaves on lateral shoots. The development of the leaf area under water limitation conditions occurred on earlier dates than under non-water limitation conditions. Significantly lower stomatal density was observed under water limitation conditions rather than non-water limitation conditions exclusively in the Airén cultivar.</p>

scholarly journals Plant biometric characterization and leaf micromorphometry of Talinum triangulare (Jacq.) Willd cultivated under shade

Revista CERES ◽  
2018 ◽  
Vol 65 (1) ◽  
pp. 44-55
Author(s):  
Ellen Carla Francisca Alexandre ◽  
Leandro Spíndola Pereira ◽  
Jose Weselli de Sá Andrade ◽  
Sebastião Carvalho Vasconcelos Filho ◽  
Adriano Jakelaitis
Keyword(s):  
Leaf Area ◽  
Stomatal Density ◽  
Treatment Plant ◽  
Weight Ratio ◽  
Experimental Unit ◽  
Fresh Weight ◽  
Abaxial Epidermis ◽  
Important Regulator ◽  
Number Of Leaves ◽  
Talinum Triangulare

ABSTRACT Talinum triangulare (Jacq.) Willd, known as Ceylon spinach, Surinam purslane, or waterleaf, is cultivated for medicinal and food purposes. Among environmental factors, light is an important regulator of primary production, contributing to plant growth. However, the success of each plant species depends on its morphoanatomical responses to light. The aim of this study was to determine whether T. triangulare leaf micromorphometry is affected when grown in full sun and under shade, and if so, which plant biometric variables are affected. T. triangulare cultivation was tested in beds arranged in blocks under shade levels of 0, 18, 30, and 50%. Each bed was considered a basic experimental unit, totaling four replications per treatment. Plant height, stem diameter, leaf area, leaf fresh weight, stem fresh weight, specific leaf area, leaf area ratio, abaxial epidermis, and mesophyll thickness were higher as shade levels increased. However, there was a decrease in the number of leaves, root to shoot ratio, stomatal density on abaxial and adaxial surfaces, and palisade parenchyma thickness. Nevertheless, root length, leaf and stem dry weights, leaf weight ratio, adaxial stomatal index, adaxial epidermis, and spongy parenchyma thickness remained constant. Plants responded differently to shade, with morphological and anatomical changes, suggesting a phenotypic plasticity and raising the possibility of being grown both in shaded environments and in full sunlight.

scholarly journals Vegetative Growth Suppression by Paclobutrazol in Greenhouse-grown `Pinot noir' Grapevines

HortScience ◽  
1990 ◽  
Vol 25 (10) ◽  
pp. 1250-1254 ◽  
Author(s):  
A.G. Reynolds ◽  
D.A. Wardle
Keyword(s):  
Gibberellic Acid ◽  
Vitis Vinifera ◽  
Leaf Area ◽  
Vegetative Growth ◽  
Foliar Application ◽  
Growth Suppression ◽  
Internode Length ◽  
Pinot Noir ◽  
Extension Growth ◽  
Lateral Shoots

Paclobutrazol (PB) soil drenches applied at 0, 10, 20, 30, 40, or 50 mg·liter-1 to potted Vitis vinifera L. `Pinot noir' vines inhibited extension growth of shoots on untopped vines and growth of lateral shoots on topped vines. Internode length, leaf area, and cane maturity were also reduced by the PB soil drenches. Foliar application of gibberellic acid (GA3) appeared to remove the effects of PB on the length of some internodes. Chemical name used: β[(4-chlorophenyl)methyl]-α-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol (paclobutrazol).

scholarly journals PHOSPHATE AND POTASSIUM FERTILIZATION FOR RADISH GROWN IN A LATOSOL WITH A HIGH CONTENT OF THESE NUTRIENTS

2017 ◽  
Vol 30 (2) ◽  
pp. 412-419 ◽  
Author(s):  
ARTHUR BERNARDES CECÍLIO FILHO ◽  
ALEXSON FILGUEIRAS DUTRA ◽  
GILSON SILVERIO DA SILVA
Keyword(s):  
Ground Water ◽  
Factorial Design ◽  
Leaf Area ◽  
Crop Yields ◽  
Dry Mass ◽  
Plant Leaf ◽  
Potassium Fertilization ◽  
Chemical Fertilization ◽  
Number Of Leaves ◽  
Better Than

ABSTRACT The intensive cultivation of vegetables with frequent chemical fertilization may cause accumulation of nutrients in the soil. This, in turn, may reduce crop yields and damage the environment due to contamination of ground water and rivers. Thus, to increase the effects of P (0, 100, 200, 300 and 400 kg ha -1 of P2O5) and K (0, 60, 120, 180 and 240 kg ha-1 of K2O) doses on the growth and productivity of radish cultivars (Sakata 19 and Sakata 25) in a soil with high levels of these nutrients, two experiments were conducted in randomized blocks with the factors cultivars and doses arranged in a 2 x 5 factorial design with three replications. Number of leaves per plant, leaf area, shoot and root dry mass, total and commercial productivity, percentage of cracked roots and P and K contents in the plant and in the soil were evaluated. The Sakata 19 cultivar performed better than the Sakata 25 in both experiments. The fertilization with P or K did not influence the growth and the productivity of both radish cultivars. Therefore, both cultivars of radish evaluated do not need to be fertilized with P and K when planted in a Latosol with high levels of these nutrients.

scholarly journals Growth of hydroponic lettuce with optimized mineral and organomineral nutrient solutions

2017 ◽  
Vol 21 (3) ◽  
pp. 191-196
Author(s):  
Antonio F. Monteiro Filho ◽  
Márcia R. Q. A. Azevedo ◽  
Carlos A. V. de Azevedo ◽  
Josely D. Fernandes ◽  
Carisa R. da Silva ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Leaf Area ◽  
Root Length ◽  
Stem Diameter ◽  
Crown Diameter ◽  
Mineral Solution ◽  
Nutrient Film Technique ◽  
Hydroponic Cultivation ◽  
Number Of Leaves ◽  
Nutrient Solutions

ABSTRACT The objective of this study was to evaluate the growth of crisp lettuce in hydroponic cultivation, following the nutrient film technique (NFT), using optimized mineral and organomineral nutrient solutions. The experiment was set in 8 x 3 factorial scheme, with treatments distributed in randomized blocks and split plots, with three replicates. The plots corresponded to eight nutrient solutions, of which four were mineral solutions with chemical composition suggested by Bernardes, Furlani, Castellane & Araújo and Ueda, and four were organomineral solutions, suggested by this research with chemical composition similar to those of the previously mentioned mineral solutions. The subplots corresponded to three varieties of crisp lettuce: Thaís, Vanda and Verônica. At 25 days after transplanting, the following parameters were evaluated: stem and crown diameter, root length, leaf area and number of leaves. For stem and crown diameters and number of leaves, the mineral solutions promoted the highest means. The mineral solution of Furlani and the organomineral solutions, except the modified solution of Castellane & Araújo, promoted the greatest root lengths. The smallest leaf area was obtained in the organomineral solution of Ueda. The cultivar Verônica had the highest root length and stem diameter.

scholarly journals Effects of Moringa oleifera LAM, Leguminous Plants and NPK Fertilizer Comparatively on Orange Fleshed Sweet Potato in Alley Cropping System

2014 ◽  
Vol 3 (3) ◽  
pp. 24-35
Author(s):  
IN Abdullahi ◽  
PO Anyaegbu ◽  
D Aliagbor
Keyword(s):  
Leaf Area ◽  
Sweet Potato ◽  
Dry Matter ◽  
Moringa Oleifera ◽  
Alley Cropping ◽  
Cropping System ◽  
Leguminous Plants ◽  
Number Of Leaves ◽  
Npk Fertilizer ◽  
Orange Fleshed Sweet Potato

The research work conducted at the Teaching and Research Farm of University of Abuja was aimed at assessing the effect of Moringa oleifera, selected leguminous plants and inorganic fertilizer on the performance of orange fleshed sweet potato in Alley Cropping System. Randomized Complete Block Design (RCBD) using five treatments with three replications was applied. Data collected include: percentage survival of sweet potato, length per vine (cm), number of leaves per vine, leaf area of sweet potato, weed dry matter (g/m2), yield of sweet potato roots. Highest number of leaves (28) per plant was recorded in the control plot while the plots with NPK fertilizer had the highest length per vine (94.55cm) though not significantly (p>0.05) different from others. Higher percent survival (88%) of sweet potato was recorded from control plots. Stands grown in Arachis hypogeae plots produced the highest leaf area (0.202m2) while plots in which NPK fertilizer was applied experienced highest weed dry matter (4.083g/m2) although highest root yield (1.2t/ha) was recorded from the plots with NPK fertilizer. DOI: http://dx.doi.org/10.3126/ije.v3i3.11061 International Journal of Environment Vol.3(3) 2014: 24-35

scholarly journals Assessment of Growth Characteristics of Medicinal Plants Ocimum tenuiflorum L. and Plectranthus amboinicus (Lour.) Spreng. Under Shade Net and Open Conditions

2020 ◽  
pp. 1-8
Author(s):  
J. Ambujavalli ◽  
K. Santhiya ◽  
K. Rohini ◽  
V. Kumaresan
Keyword(s):  
Medicinal Plants ◽  
Leaf Area ◽  
Plant Height ◽  
Growth Characteristics ◽  
Similar Type ◽  
Potted Plants ◽  
Ocimum Tenuiflorum ◽  
Number Of Leaves ◽  
Plectranthus Amboinicus ◽  
Microclimate Conditions

Aim: To study the effect of shade net on the growth characteristics of two medicinal plants viz., Tulsi and Indian Borage in terms of plant height, number of leaves, leaf area and flowering in relation to open condition. Place and Duration of Study: Lawspet, Puducherry, India between June 2018 and October 2018. Methodology: Tulsi and Indian Borage plants were grown in similar type of soil. The potted plants were kept in open, 35% and 75% shade net conditions and studied for 3 months. The plant height, number of leaves, and leaf area were measured including number of inflorescence branches for Tulsi. Results: The average air temperature was lower under shade net. Relative humidity was more in shade net conditions with maximum in 75% shade and least in open conditions. The number of leaves of Tulsi and Indian Borage recorded was maximum when grown under 35% shade and least in open conditions. Plant height was maximum in 75% shade for Tulsi and 35% shade in Indian Borage and least in open conditions on both the cases. Leaf area was maximum for both Tulsi and Indian Borage in 75% shade. Conclusion: Growth of the two medicinal plants was influenced by the microclimate conditions. The present study shows that the medicinal plants can be grown in shade net conditions to increase the yield of medicinally useful parts.

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