News Update on Maize Genotypes Research: Aug – 2019

Potential for Nitrogen Fixation in Maize Genotypes in Brazil

N2 fixation in field-grown maize (Zea mays L.) plants was calculable by a nondestructive aliphatic compound reduction methodology that allowable the plants to continue growing and turn out seeds. Samples from six areas discovered mean enzyme activities of 74-2167 nmol of C2H4/(g of dry roots × hr) for ten plants. Among 276 S1 lines planted in 2 field experiments, seventeen lines were selected  for more enzyme activity assays when prescreening. Variability at intervals lines was high however vital variations among lines were obtained in one experiment. [1]

Inbreeding Depression, Inbred and Hybrid Grain Yields, and Other Traits of Maize Genotypes Representing Three Eras 1

Improvement within the genetic price of maize (Zea mays L.) hybrids over the years will be a consequence of redoubled heterosis and/or improved inbred oldsters. The objectives of this study were to see the character of the genetic improvement of maize hybrids over a amount of concerning forty years employing a representative series of hybrids and to determine any associated changes in morphological and yield element traits. [2]

Effect of salt stress on antioxidative enzymes and lipid peroxidation in leaves and roots of salt-tolerant and salt-sensitive maize genotypes

The effects of salt stress on the activity of antioxidative enzymes and lipoid peroxidation were studied in leaves and roots of 2 maize genotypes, BR5033 (salt-tolerant) and BR5011 (salt-sensitive), adult in restraint (nutrient resolution) or salt stress (nutrient solution containing one hundred millimeter NaCl) conditions. Leaves and roots of management and salt-stressed plants were harvested at numerous times beginning one day before initiating the salt treatment. In leaves of salt-stressed plants, SOD (SOD), ascorbate oxidase (APX), guaiacol oxidase (GPX) and glutathione enzyme (GR) activities enhanced with time in comparison to the controls. [3]

Systematic biology analysis on photosynthetic carbon metabolism of maize leaf following sudden heat shock under elevated CO2

Plants would expertise additional complicated environments, like fulminant heat shock (SHS) stress combined with elevated CO2 within the future, and may adapt to the present nerve-racking condition by optimizing chemical process carbon metabolism (PCM). it’s fascinating underneathstand|to know|to grasp} whether or not this acclimatisation method would be altered in numerous genotypes of maize under elevated CO2, and that metabolites represent key indicators reflective the chemical process rates (PN) following SHS. [4]

Genetic Variability Studies Involving Drought Tolerance Related Traits in Maize Genotypes

The field experiment was distributed at Dryland Agriculture analysis Station (DARS) Budgam, underneath natural rainfed conditions throughout Kharif 2017 season. 13 types of maize were evaluated and also the experiment was arranged  go in a irregular block style with 3 replications. Highest composition and phenotypical constant of variation was found in blossoming, silking interval and lowest in no of cobs/plant. High heritability not to mention a high genetic advance was determined for shoot weight, grains/cob and plant height. [5]

Reference

[1] Von Bülow, J.F. and Döbereiner, J., 1975. Potential for nitrogen fixation in maize genotypes in Brazil. Proceedings of the National Academy of Sciences, 72(6), pp.2389-2393. (Web Link)

[2] Meghji, M.R., Dudley, J.W., Lambert, R.J. and Sprague, G.F., 1984. Inbreeding Depression, Inbred and Hybrid Grain Yields, and Other Traits of Maize Genotypes Representing Three Eras 1. Crop Science, 24(3), pp.545-549. (Web Link)

[3] de Azevedo Neto, A.D., Prisco, J.T., Enéas-Filho, J., de Abreu, C.E.B. and Gomes-Filho, E., 2006. Effect of salt stress on antioxidative enzymes and lipid peroxidation in leaves and roots of salt-tolerant and salt-sensitive maize genotypes. Environmental and Experimental Botany, 56(1), pp.87-94. (Web Link)

[4] Systematic biology analysis on photosynthetic carbon metabolism of maize leaf following sudden heat shock under elevated CO2

Mingnan Qu, Genyun Chen, James A. Bunce, Xiaocen Zhu & Richard C. Sicher

Scientific Reportsvolume 8, Article number: 7849 (2018) (Web Link)

[5] Dar, I. A., Dar, Z. A., ., K., Sofi, P. A., Hussan, S., Dar, M. S. and Alie, W. (2018) “Genetic Variability Studies Involving Drought Tolerance Related Traits in Maize Genotypes”, Journal of Agriculture and Ecology Research International, 14(2), pp. 1-13. doi: 10.9734/JAERI/2018/40241. (Web Link)

Leave a Reply

Your email address will not be published. Required fields are marked *