Improvement of Zea mays L. growth parameters under chromium and arsenic stress by the heavy metal-resistant Streptomyces sp. NRC21696

2021 ◽  
Author(s):  
A. A. AL-Huqail ◽  
A. M. A. El-Bondkly
Keyword(s):  
Heavy Metal ◽  
Zea Mays ◽  
Zea Mays L ◽  
Growth Parameters ◽  
Streptomyces Sp ◽  
Arsenic Stress ◽  
Heavy Metal Resistant

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 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 STUDIES ON HETEROSIS AND COMBINING ABILITY THROUGH DIALLEL METHOD IN MAIZE (ZEA MAYS L.)

2021 ◽  
Vol 21 (No 1) ◽  
Author(s):  
Mahipat Singh Yadav ◽  
B. Gangwar
Keyword(s):  
Zea Mays ◽  
Seed Yield ◽  
Combining Ability ◽  
Yield Components ◽  
Zea Mays L ◽  
Growth Parameters ◽  
Block Design ◽  
Rabi Season ◽  
Yield Attributes ◽  
Randomized Block Design

The present investigation was conducted using 28 different genotypes (seven parents and their 21 F1s) of maize under organic conditions at the Rain-fed Organic Research Farm, Narayanbag, Institute of Agricultural Sciences, Bundelkhand University, Jhansi (U.P.) India, during kharif 2018 and rabi season 2018-19. In order to determine the general and specific combining ability of parents and the crosses, the growth parameters and yield components were evaluated in a 7×7 diallel fashion in maize in a Randomized Block Design (RBD) with three replications. In this study, the GCA effects suggested that parent P1, P2 and P4 were the most desirable as they possessed high GCA effect for most of the characters. Among F1 crosses, P4 x P3, P3 x P1, P5 x P3 and P7 x P5 having significant positive SCA were found to be desirable for yield and yield attributing characters. The maximum heterotic effects in desirable direction for yield attributes were showed by the cross combinations viz; P1 x P6, P2 x P7, P2 x P5, P1 x P2, P3 x P4, P5 x P7 and P3 x P5. The maximum heterosis was recorded in for Seed yield per plant P5 x P7 (39.32%) which ranged from -14.69 to 49.55.

scholarly journals Influence of Organic Manures and Inorganic Fertilizers on Growth and Yield of Fodder Maize (Zea mays L.) Grown in North Eastern Zone of Tamil Nadu

2021 ◽  
pp. 70-78
Author(s):  
T. Ananthi ◽  
C. Vennila
Keyword(s):  
Zea Mays ◽  
Tamil Nadu ◽  
Zea Mays L ◽  
Growth Parameters ◽  
Poultry Manure ◽  
Growth And Yield ◽  
Inorganic Fertilizers ◽  
Area Index ◽  
Organic Manures ◽  
Fodder Yield

Experiments were conducted during rabi season of 2019 and 2020 at the Department of Agronomy, Madras Veterinary College, Chennai to assess the performance of fodder maize (Zea mays L.) under varying combinations of organic manures and inorganic fertilizers. An experiment was laid out in split plot design with four organic treatments in main-plots viz., No manure, farm yard  manure (25 t/ha), vermicompost (12 t/ ha),  poultry manure (12 t /ha) and four fertilizer treatments in subplots with levels of No fertilizer, 125% RDF, 100% RDF, 75% RDF.  Recommended dose of fertilizer (RDF) for fodder maize crop is 60 kg N ha-1: 40 kg P2O5 ha-1: 20 kg K2O ha-1. The organic manures were applied as per the N equivalent basis to inorganic nutrient recommendation. The results revealed that all the maize growth parameters, green and dry fodder yield were significantly affected with the application of organic manures and fertilizer levels. Growth parameters viz., taller plants, more number of leaves per plant, higher leaf area index, stem girth, leaf stem ratio were observed under the combined application of poultry manure @ 12 t/ha  and fertilizer level of 75% RDF. The highest green matter yield and dry fodder yield were recorded with the integrated application of poultry manure @ 12 t/ ha along with the fertilizer level of 75 % RDF.

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