scholarly journals Influence of NaCl salinity on plant growth and nutrient assimilation of Zea mays L.

2016 ◽  
Vol 1 (1) ◽  
pp. 54 ◽  
Author(s):  
R. Sozharajan ◽  
S. Natarajan
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Growth Parameters ◽  
Fine Sand ◽  
Nacl Stress ◽  
Mineral Nutrient ◽  
Human Consumption ◽  
Mineral Contents ◽  
Maize Seeds ◽  
Randomized Design

Maize (Zea mays L.) is the world’s leading edible oil and third largest important cereal. In addition to it is used as food for human consumption as well as food grain for livestock. High concentrations of NaCl in soils account for large decrease in the yield of a large variety of crops all over the globe. The objective of the present study was conducted to evaluate NaCl stress on growth and mineral nutrient composition of maize plants. Maize seeds were grown in plastic pots having fine sand. After 20 days of germination, the plants were subjected to seven different concentrations (Control, 25mM, 50mM, 75mM, 100mM, 125mM and 150mM) of NaCl. Plants were analyzed on 15th day after salt treatment. Factorial experiments in a completely randomized design (CRBD) with three replications were applied. The growth parameters and mineral contents Na, Ca, K and Cl were investigated from saline treated and non saline treated plants. Results indicated that the NaCl stress markedly reduced the shoot and root length fresh and dry masses. Moreover Na+, Cl- content increased with increase in NaCl stress, while Ca2+ and K+ were decreased significantly.

scholarly journals Growth behaviour and metal accumulation of two varieties of maize Zea mays L. sown on a soil obtained from a mining site

2020 ◽  
Vol 7 (15) ◽  
pp. 29-38
Author(s):  
Sylvanus Efetobor Abiya ◽  
Germaine Akinola Ogunwole ◽  
Bridget Onoshagbe Odiyi ◽  
Aderonke Blessing Olanrewaju
Keyword(s):  
Zea Mays ◽  
Leaf Area ◽  
Plant Height ◽  
Zea Mays L ◽  
Growth Parameters ◽  
Control Soil ◽  
Growth Behaviour ◽  
Randomized Design ◽  
Two Samples ◽  
Negative Effect

A screen house study was conducted to evaluate the effect of gemstone mining on the growth behaviour of maize Zea mays L. A completely randomized design involving two samples of soil (FUTA (control) and Ijero (mined soil)), two varieties of the maize (TMZ234 and Sammarz 39) was used. The seeds were sown into experimental pots containing the soils and the whole set up was left for eight weeks. Growth parameters (plant height, leaf area and stem girth were taken at a weekly basis up till the eight week. Eight heavy metal (Cd, Cu, Cr, Fe, Ar, Zn, Pb and Ni) concentration in the soils, roots and shoots of the plants was determined at the end of the experiment using atomic absorption spectrophotometer. Baseline data indicates that the mined soil is acidic (pH 4.12), with low organic carbon (0.92), low organic matter (1.59) and low total nitrogen (0.76). Results obtained from this study show that all growth parameters were negatively affected by the mined soil. Plant height was significantly higher in the control varieties (82.28 and 40.46, respectively) when compared with the mined soil varieties (30.5 and 29, respectively) at 8 weeks after planting (WAP). Leaf area also followed the same pattern with varieties grown on control soil having significantly higher leaf area (48.22 and 25.22, respectively) than varieties grown on mined soil (19.08 and 19, respectively). Stem girth of variety TMZ234 in control soil was also significantly higher than the rest (2.24 as against 1.68, 1.5 and 1.74). Heavy metals concentration in the soil, shoot and root of the plants grown in mined soils were all higher than in those grown on control soils. In the soil, Cr, Ni and Pb were 0.24, 0.15, 0.10 and 0.20, 0.13, 0.10, respectively, in both varieties grown on mined soils as against 0.03, 0.01, 0.00 and 0.03, 0.08, 0.00 for Cr, Ni and Pb, respectively, for both varieties grown on control soils. Bioaccumulation and translocation factors for the metals were less than 1 in all the soils except for Ni which had BCF of 2.80 and 6.90 for both varieties grown in the control soils. The results from this study has shown the negative effect of gemstone mining activities on the growth of two varieties of Zea mays.

scholarly journals Effects of Salinity on Seedling Growth of Four Maize (Zea Mays L.) Cultivars Under Hydroponics

2018 ◽  
Vol 5 (4) ◽  
pp. 54
Author(s):  
Snehasish Bose, Oli Ahmed Fakir, Mahbubul Islam, Md Khairul Alam ◽  
A. K. M. Zakir Hossain, Alamgir Hossain, M. H. Rashid
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Dry Mass ◽  
Morphological Characters ◽  
Nacl Stress ◽  
Hydroponic Experiment ◽  
Randomized Design ◽  
Root And Shoot Length ◽  
Number Of Leaves ◽  
Physiology Laboratory

Growth and development of a crop or even cultivars within a species of a crop respond to soil salinity since germination. A hydroponic experiment was conducted at Plant Physiology Laboratory, Department of Crop Botany, Bangladesh Agricultural University, Mymensingh, Bangladesh, during the period from December 2015 to July 2016 to investigate the effect of NaCl on morphological characters and growth of maize (Zea mays L.) seedlings. The experiment comprised two levels (0 dS m-1 and 8 dS m-1) of salinity for hydroponic experiment, designed in two factorials Complete Randomized Design (CRD) with three replications on four cultivars viz. Kaveri - 244+, BHARAT Hybrid Sultan 702, Getco seeds GP – 901, Essence –Platinum. Results indicated that root and shoot length, number of leaves plant-1, fresh and dry mass production varied with NaCl stress which indicating that some cultivars of maize seedlings are highly susceptible to concentrated NaCl. However, among tested cultivars, Essence –Platinum showed the best performance considering the seedlings growth and other parameters. BHARAT Hybrid Sultan 702, Getco seeds GP – 901 showed the highest sensitivity to NaCl stress in this experiment based on the above parameters studied.

scholarly journals Effect of salt stress on some sweet corn (Zea mays L. var. saccharata) genotypes

2015 ◽  
Vol 67 (3) ◽  
pp. 993-1000 ◽  
Author(s):  
Lydia Shtereva ◽  
Roumiana Vassilevska-Ivanova ◽  
Tanya Karceva
Keyword(s):  
Zea Mays ◽  
Salt Stress ◽  
Zea Mays L ◽  
Sweet Corn ◽  
Growth Parameters ◽  
Dry Weight ◽  
Germination Percentage ◽  
F1 Hybrid ◽  
Salt Stress Condition ◽  
Salinity Levels

An experiment was carried out hydroponically under laboratory conditions to investigate the effect of salt stress on several physiological and biochemical parameters of three sweet corn (Zea mays L. var. saccharata) genotypes: lines 6-13, C-6 (pollen source) and their heterotic F1 hybrid ?Zaharina?. The degree of salinity tolerance among these genotypes was evaluated at three different sodium chloride (NaCl) concentrations: 0 mM, 100 mM, 125 mM and 150 mM. Seed germination, plant growth and biochemical stress determining parameters such as malondialdehyde (MDA), proline content and hydrogen peroxide (H2O2) levels were compared between seedlings of lines and hybrid. The obtained results indicated that both lines and hybrid have similar responses at different salinity levels for all examined traits. All the seedlings? growth parameters, such as germination percentage, root length, shoot length, root and shoot fresh and dry weight, decreased with increasing salinity level. MDA, proline and H2O2 increased at different saline conditions in comparison to the control. Based on the results, of the three genotypes examined, the hybrid Zaharina, followed by line C-6, was more salt-sensitive than line 6-13 in salt stress condition.

scholarly journals Salicylic Acid Improves Boron Toxicity Tolerance by Modulating the Physio-Biochemical Characteristics of Maize (Zea mays L.) at an Early Growth Stage

Agronomy ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2013
Author(s):  
Muhammad Nawaz ◽  
Sabtain Ishaq ◽  
Hasnain Ishaq ◽  
Naeem Khan ◽  
Naeem Iqbal ◽  
...  
Keyword(s):  
Zea Mays ◽  
Salicylic Acid ◽  
Plant Growth ◽  
Zea Mays L ◽  
Seed Priming ◽  
Mineral Nutrient ◽  
Boron Toxicity ◽  
Potential Candidate ◽  
Root And Shoot Length ◽  
Mineral Concentrations

The boron (B) concentration surpasses the plant need in arid and semi-arid regions of the world, resulting in phyto-toxicity. Salicylic acid (SA) is an endogenous signaling molecule responsible for stress tolerance in plants and is a potential candidate for ameliorating B toxicity. In this study, the effects of seed priming with SA (0, 50, 100 and 150 µM for 12 h) on the growth, pigmentation and mineral concentrations of maize (Zea mays L.) grown under B toxicity were investigated. One-week old seedlings were subjected to soil spiked with B (0, 15 and 30 mg kg−1 soil) as boric acid. Elevating concentrations of B reduced the root and shoot length, but these losses were significantly restored in plants raised from seeds primed with 100 µM of SA. The B application decreased the root and shoot fresh/dry biomasses significantly at 30 mg kg−1 soil. The chlorophyll and carotenoid contents decreased with increasing levels of B, while the contents of anthocyanin, H2O2, ascorbic acid (ASA) and glycinebetaine (GB) were enhanced. The root K and Ca contents were significantly increased, while a reduction in the shoot K contents was recorded. The nitrate concentration was significantly higher in the shoot as compared to the root under applied B toxic regimes. However, all of these B toxicity effects were diminished with 100 µM SA applications. The current study outcomes suggested that the exogenously applied SA modulates the response of plants grown under B toxic conditions, and hence could be used as a plant growth regulator to stimulate plant growth and enhance mineral nutrient uptake under B-stressed conditions.

scholarly journals MÉTODOS DE DETECÇÃO DO GÊNERO Aspergillus EM SEMENTES DE MILHO (Zea mays L.) EM 270 DIAS DE ARMAZENAMENTO

2003 ◽  
Vol 4 (1) ◽  
Author(s):  
G. M. CIRIO ◽  
M. L. R. Z. C. LIMA
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Animal Health ◽  
Potato Dextrose Agar ◽  
Detection Methods ◽  
Secure Storage ◽  
Maize Seeds ◽  
Low Humidity ◽  
The Media ◽  
Seeds Germination

O gênero Aspergillus tem como característica desenvolver-se em sementes e grãos com baixa umidade causando deterioração destes durante armazenamento com efeito na germinação nas sementes e produção de micotoxinas como aflatoxina em grãos, prejudiciais a saúde do homem e dos animais. Para avaliar a eficiência de métodos de detecção para Aspergillus, verificar germinação e umidade das sementes de milho foi feita armazenagem por 270 dias. As avaliações foram ao zero, 90, 150, 210 e 270 dias após armazenamento (DAA) com testes em papel filtro (blotter) e nos meios de batata dextrose ágar ácido (BDA ácido) e ágar suco de tomate mais 6% de cloreto de sódio (AST salino). Como resultados ao zero dia de armazenamento verificou-se ausência de Aspergillus; aos 90 DAA incidências 7,2% em blotter e 1,1% em AST; aos 150 DAA incidências 5,1% em blotter; aos 210 DAA incidências 41,1% em AST, 5,1% no blotter e 3,3% no BDA e aos 270 DAA incidências de 79,7% e 66,2% em blotter e AST que não diferiram estatisticamente entre si e 21% em BDA. A germinação e umidade foram: 98% e 10,8% (dia zero); 93% e 13,4% (90 DAA); 93% e 12,2% (150 DAA); 92% e 14,2% (210 DAA) e 36 % e 12,2 % (270 DAA), respectivamente. Concluiu-se que o meio AST salino mostrou maior eficiência para detectar Aspergillus aos 210 DAA indicando proliferação do gênero durante armazenamento até 270 DAA. A germinação das sementes reduziu-se de 92% para 36% entre 210 e 270 DAA e a umidade variou entre 10,8% e 14,2%, compatível com armazenagem segura. DETECTION METHODS OF Aspergillus GENUS IN CORN SEEDS (Zea mays L.) DURING 270 DAYS STORAGE Abstract The genera Aspergillus has a characteristic to developed in seeds and grains with low humidity causing deterioration during storage with effects on the seeds germination andmicotoxins production as aflatoxin in grains that are harmful to man and animal health. To evaluated the efficiency of detection methods for Aspergillus, to confirm germination and humidity in maize seeds, they were stored for 270 days. The evaluations were at zero, 90, 150, 210 and 270 days after storage (DAS) with the blotter test and in media potato-dextrose-agar (PDA acid) and tomato juice agar plus 6% NaCl (salty TJA). As results at zero day absence of Aspergillus, at 90 DAS incidence 7,2% in blotter and 1,1% in TMA, at 150 DAS incidence 5,1% in blotter; at 210 DAS the incidence 41,1% in TMA, 5,1% in blotter e 3,3% in PDA and at 270 DAS incidence 79,7% and 66,2% in blotter and TMA that didn’t differ statistically and 21% in PDA. Were get germination and humidity 98% and 10,8% (zero day); 93% and 13,4% (90 DAS); 93% and 12,2% (150 DAS); 92% and 14,2% (210 DAS) and 36% and 12,2% (270 DAS) respectively. The conclusions were that the media salty TJA showed higher efficiency to detect Aspergillus at 210 DAS what indicated proliferation of the genera during storage till 270 DAS. The germination reduced from92% to 36% between 210 e 270 DAS and humidity remained between 10,8% and 14,2% compatible with secure storage.

scholarly journals NaCl stress causes changes in photosynthetic pigments and accumulation of compatible solutes in Zea mays L.

2016 ◽  
Vol 1 (1) ◽  
pp. 3 ◽  
Author(s):  
Rajendran Sozharajan ◽  
Sabanayagam Natarajan
Keyword(s):  
Zea Mays ◽  
Photosynthetic Pigments ◽  
Zea Mays L ◽  
Block Design ◽  
Photosynthetic Pigment ◽  
Compatible Solutes ◽  
Nacl Stress ◽  
Salt Treatment ◽  
Randomized Block Design ◽  
Photosynthetic Pigment Content

The present study was conducted in order to evaluate the effects of NaCl on photosynthetic pigments and compatible solutes of Zea mays under salt stress. Seven NaCl regimes were used, 0mM, 25mM, 50mM, 75mM 100mM, 125mM and 150mM. Plants were analyzed on 15th day after salt treatment. A factorial experiment in a completely randomized block design (CRBD) with seven treatments and three replications were applied. From the data attained, we understand that in accordance with the increase in salinity, photosynthetic pigment content reduced drastically, whereas compatible solutes like proline, glycine betaine and sugar enhanced marginally. The accumulation of compatible solutes makes the plant survive against salinity stress.

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