Effects of hydroponic culture system and NaCl on interactions between common bean lines and native rhizobia from Tunisian soils

Agronomie ◽  
2001 ◽  
Vol 21 (6-7) ◽  
pp. 601-605 ◽  
Author(s):  
Moez Jebara ◽  
Jean-Jacques Drevon ◽  
Mohamed Elarbi Aouani
Keyword(s):  
Common Bean ◽  
Culture System ◽  
Hydroponic Culture

scholarly journals Relative Salinity Tolerance of Turf-type Saltgrass Selections

HortScience ◽  
2007 ◽  
Vol 42 (2) ◽  
pp. 205-209 ◽  
Author(s):  
Y.L. Qian ◽  
J.M. Fu ◽  
S.J. Wilhelm ◽  
D. Christensen ◽  
A.J. Koski
Keyword(s):  
Salt Tolerance ◽  
Culture System ◽  
Hydroponic Culture ◽  
Distichlis Spicata ◽  
Saline Soils ◽  
Salt Tolerant ◽  
Saline Irrigation ◽  
Turf Quality ◽  
Salinity Levels ◽  
Irrigation Waters

Salt-tolerant turfgrass is highly desirable in areas associated with saline soils or saline irrigation waters. To determine the salt tolerance of 14 saltgrass [Distichlis spicata var. stricta (Greene)] selections, two greenhouse studies were conducted by means of a hydroponic culture system. Five salinity levels (from 2 to 48 dS·m−1) were created with ocean salts. In general, turf quality decreased and leaf firing increased as salinity increased. However, varying levels of salt tolerance were observed among selections based on leaf firing, turf quality, root growth, and clipping yield. Selections COAZ-01, COAZ-18, CO-01, and COAZ-19 exhibited the best turf quality and the least leaf firing at 36 and 48 dS·m−1 salinity levels in both Experiments 1 and 2. At the highest salinity level (48 dS·m−1), COAZ-18 and COAZ-19 exhibited the highest root activity among all accessions. Salinity levels that caused 25% clipping reduction ranged from 21.2 to 29.9 dS·m−1 and were not significantly different among entries. The data on 25% clipping reduction salinity of saltgrass generated in this study rank saltgrass as one of the most salt-tolerant species that can be used as turf.

A NO-ELECTRICITY HYDROPONIC CULTURE SYSTEM FOR FRUIT VEGETABLES

2007 ◽  
pp. 95-97
Author(s):  
T. Ikeda ◽  
H. Hamamoto ◽  
K. Yamazaki ◽  
K. Tanaka
Keyword(s):  
Culture System ◽  
Hydroponic Culture

scholarly journals Attenuation of Mercury Phytotoxicity with a High Nutritional Level of Nitrate in Alfalfa Plants Grown Hydroponically

2021 ◽  
Author(s):  
Sandra Carrasco-Gil ◽  
Cristina Ortega-Villasante ◽  
Juan Sobrino-Plata ◽  
Ángel Barón-Sola ◽  
Rocío Millán ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Heavy Metals ◽  
Lipid Peroxidation ◽  
Nitrate Reductase ◽  
Culture System ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Hydroponic Culture ◽  
Physiological Alterations ◽  
Different Levels

Abstract Background and aims Mercury (Hg) is one of the most dangerous pollutant heavy metals to the environment, which causes several toxic effects in plants upon accumulation, such as induction of oxidative stress. Nitrogen (N) is one of the most limiting macronutrient for plants, being mostly assimilated as NO3─ which is reduced to NO2─ by the enzyme nitrate reductase (NR), prior its reduction to NH4+.Methods We studied the physiological alterations caused by Hg (0, 6 and 30 µM) in alfalfa plants grown at two different levels of NO3─: low, (2 mM; LN), and high (12 mM; HN) for one week using a semi-hydroponic culture system.Results Several parameters of oxidative stress such as lipid peroxidation, chlorophyll content, biothiol concentration and, ascorbate peroxidase (APX) and glutathione reductase (GR) activity showed that HN plants were less affected by Hg. Nitrate reductase activity and NO3─ concentration was altered under Hg stress, with lower impact in plants nourished with high NO3─. Conclusions Our results highlight the importance of the nitrogen nutritional status to improve tolerance to toxic metals like Hg.

scholarly journals 540 Influence of Calcium Nutrition on Growth and Tissue Electrolyte Leakage in Carrot (Daucus carota)

HortScience ◽  
2000 ◽  
Vol 35 (3) ◽  
pp. 488E-488
Author(s):  
Keun Ho Cho ◽  
Chiwon W. Lee ◽  
Larry J. Cihacek ◽  
Robert W. Stack ◽  
Hoon Kang
Keyword(s):  
Nutrient Solution ◽  
Daucus Carota ◽  
Electrolyte Leakage ◽  
Culture System ◽  
Experimental Period ◽  
Hydroponic Culture ◽  
Calcium Nutrition ◽  
Tap Root ◽  
Hydroponically Grown ◽  
Nutrient Solutions

The influence of calcium (Ca++) nutrition on the growth and root tissue electrolyte leakage (EL) of carrot (Daucus carota) was investigated using a hydroponic culture system. Seedlings of `Navajo' carrot were grown for 10 weeks with roots submersed in hydroponic nutrient solutions containing 0, 0.1, 1, 2, 4, or 8 meq/L Ca++. The nutrient solution was replenished weekly with its pH maintained at 5.8 for the entire experimental period. The tap root lengths increased as solution Ca++ concentration increased. The diameter and fresh and dry weights of the tap roots increased as Ca++ concentration increased up to 4 meq/L, and then decreased at 8 meq/L Ca++. The root and petiole concentrations of sugar, potassium, and nitrate were unaffected by changes in nutrient solution Ca++ levels. The tissue EL, when tested for the stored roots, decreased as solution Ca++ concentration increased (r = 0.602). Results of this experiment suggest that calcium nutrition is essential for maintaining cell wall integrity in hydroponically grown carrot roots.

In vitrosterile hydroponic culture system to study iron chlorosis1

1996 ◽  
Vol 19 (1) ◽  
pp. 129-143 ◽  
Author(s):  
Brent Tisserat ◽  
John A. Manthey
Keyword(s):  
Culture System ◽  
Hydroponic Culture
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