scholarly journals Inheritance of Plant and Ear Height in Maize (Zea Mays L.)

2002 ◽  
pp. 34-38 ◽  
Author(s):  
Zsuzsanna Zsubori ◽  
Zsuzsanna Gyenes-Hegyi ◽  
Ottó Illés ◽  
István Pók ◽  
Ferenc Rácz ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Plant Height ◽  
Dry Matter ◽  
Zea Mays L ◽  
Plant Density ◽  
Pests And Diseases ◽  
Stover Yield ◽  
Ear Height ◽  
Positive Correlations

Plant and ear height are very important characters not only for describing new varieties of maize (Zea mays L.), but for green and dry matter production, and even for grain yield. Significant positive correlations have been reported by various authors between plant height and stover yield, plant height and dry matter yield, and plant height and grain yield. The height of the main ear is also correlated to plant height. It depends on the variety or the environment, but is likely to be the same height within a population. Many environmental and agronomical factors (e.g. plant density, fertilization, pests and diseases) influence the expression of these characters, which are not quality traits. Their expression is controlled by many genes and by the interactions between these genes. The heritability of these traits is high and they show significant genotypic variability and positive heterosis, as reported in many research publications.

Identification of QTLs for plant height, ear height and grain yield in maize (Zea mays L.) in response to nitrogen and phosphorus supply

2012 ◽  
Vol 131 (4) ◽  
pp. 502-510 ◽  
Author(s):  
Hongguang Cai ◽  
Qun Chu ◽  
Riliang Gu ◽  
Lixing Yuan ◽  
Jianchao Liu ◽  
...  
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Plant Height ◽  
Zea Mays L ◽  
Nitrogen And Phosphorus ◽  
Ear Height

scholarly journals Nitrogen fertilizer rate for improving inbred maize (Zea mays L.) yield on the semi-arid southern coast of Puerto Rico

2017 ◽  
Vol 101 (2) ◽  
pp. 185-202
Author(s):  
Johanie Rivera-Zayas ◽  
David Sotomayor-Ramírez ◽  
Ricardo Barnes
Keyword(s):  
Zea Mays ◽  
Puerto Rico ◽  
Grain Yield ◽  
Plant Height ◽  
Cover Crop ◽  
Crop Production ◽  
Zea Mays L ◽  
Plant Density ◽  
Fertilizer N ◽  
Semi Arid

Nitrogen (N) is possibly the most limiting nutrient for crop production on the southern semi-arid coast of Puerto Rico. In efforts to improve inbred maize (Zea mays L.) grain yield, fertilizer N is sometimes aggressively managed. In this paper, we report on the results of a field experiment that evaluated the effect of six rates of fertilizer N (0, 34, 68,102,135 and 203 kg N/ha) and of cowpea (Vigna unguiculata cv. Iron-clay), planted as a cover crop during the offseason, on inbred maize grain yield. The soil was Jacaguas series (Loamy-skeletal, mixed, superactive, isohyperthermic Fluventic Haplustolls) on the Dow Agrosciences experimental farm in Santa Isabel, Puerto Rico. Cowpea was planted on 13 July 2013 and incorporated into the soil on 20 September 2013. An inbred maize line was planted on 19 December 2013 and harvested on 19 March 2014 at a plant density of 51,645 plants per hectare. Irrigation was provided via drip system, and fertilizer N was applied at three different stages during the growing season: at emergence, 21 and 37 days after planting. Measurements of plant height, chlorophyll readings using SPAD-502® and GreenSeeker®, and leaf N concentration were used as indicators of treatment response and N sufficiency. The maximum grain yield of 2,918 kg/ha was attained with the fertilizer N rate of 68 kg N/ha. The cowpea cover crop rotation did not affect grain yield (P>0.05). Plant height, and measurements by SPAD-502® and GreenSeeker® provided adequate indicators of crop N sufficiency during the vegetative stages V6 to V12, with optimum values of 149 cm, 46, and 0.67 NDVI, respectively, 52 days after planting with an application of 68 kg N/ ha. Crop response to fertilizer N occurred at a lower rate than in previous studies and those occurring under conventional commercial conditions. Other factors related to fertilizer N management, such as sources, placement and timing of application might be as important for grain yield improvement of inbred maize.

scholarly journals GENETIC DIVERGENCE IN MAIZE (Zea mays L.)

2007 ◽  
Vol 20 (1) ◽  
pp. 53-56
Author(s):  
N. A. Ivy ◽  
M. Shalim Uddin ◽  
R. Sultana ◽  
M. M. Masud
Keyword(s):  
Genetic Diversity ◽  
Principal Component Analysis ◽  
Zea Mays ◽  
Grain Yield ◽  
Plant Height ◽  
Genetic Divergence ◽  
Zea Mays L ◽  
Principal Component ◽  
Days To Maturity ◽  
Ear Height

Genetic divergence of 25 genotypes of maize were estimated using D2 and Principal Component Analysis. The genotypes under study fell into five clusters. The inter-cluster distances were higher than intra cluster distances suggesting wider genetic diversity among the genotypes of different groups. The intra-cluster value was maximum in cluster V and minimum in cluster I. The inter cluster D2 values showed the maximum distance between cluster II and III followed by the distance between II and I. The cluster means were higher for days to maturity, plant height and ear height in cluster II; grain yield per plant was higher in cluster IV. Genotypes were much in use having the above mentioned characters in clusters II and IV would offer a good scope for the improvement of this crop through hybridization and rational selection.DOI: http://dx.doi.org/10.3329/bjpbg.v20i1.17027

QTL Identification for Plant Height and Ear Height Based on SNP Mapping in Maize (Zea mays L.)

2013 ◽  
Vol 39 (3) ◽  
pp. 549 ◽  
Author(s):  
De-Bo ZHENG ◽  
Xiao-Hong YANG ◽  
Jian-Sheng LI ◽  
Jian-Bing YAN ◽  
Shi-Long ZHANG ◽  
...  
Keyword(s):  
Zea Mays ◽  
Plant Height ◽  
Zea Mays L ◽  
Snp Mapping ◽  
Ear Height ◽  
Qtl Identification

scholarly journals Selection of best lines and hybrids on the basis of genetic variability analysis in Maize (Zea mays L.)

2020 ◽  
Vol 5 (01) ◽  
pp. 45-49
Author(s):  
Ankit Kumar ◽  
Amit Tomar
Keyword(s):  
Zea Mays ◽  
Genetic Variability ◽  
Grain Yield ◽  
Plant Height ◽  
Zea Mays L ◽  
Grain Weight ◽  
Variability Analysis ◽  
Selection Of

The results revealed that parents namely, TSK-10, TSK-27, New Blue-II, Kurara and TSK-109 were found highly genetic diverse for days to 50% tasseling, days to 50% silking, days to 755 dry husk. The parents namely, TSK-109, Kurara, New Blue-II and TSK-10 were found highly genetic diverse for plant height (cm), cob height, number of cobs per plant and number of grains per cob. The parents namely, Kurara, TSK-109, TSK-10, New Blue-II and TSK-27 were found highly genetic diverse for shelling percentage, grain yield per plant, grain yield per cob and 100-grain weight.

scholarly journals Fertilización Con Potasio Y Fosfitos, Sobre El Rendimiento De Maíz Duro (Zea Mays) En La Zona Subcentral Litoral

2018 ◽  
Vol 14 (15) ◽  
pp. 46
Author(s):  
Álvaro Lamilla Arana ◽  
Eduardo Colina Navarrete ◽  
Carlos Castro Arteaga ◽  
Danilo Santana Aragone ◽  
Guillermo García Vásquez ◽  
...  
Keyword(s):  
Zea Mays ◽  
Experimental Design ◽  
Grain Yield ◽  
Plant Height ◽  
Zea Mays L ◽  
Potassium Sulfate ◽  
Hybrid Corn ◽  
Calcium Magnesium ◽  
San Juan County ◽  
Muriate Of Potash

The investigation evaluated the effect of fertilizers potásicos with fosfitos on the yield of grain of hard corn (Zea mays L.), in the Property "Santiago", located in the Km 26 way Babahoyo-San Juan, county of Los Ríos. A rehearsal settled down in the hybrid corn DK-7088, measuring the answer from the corn to the application of fertilizers potasic and fhosphite, to determine the dose with more effect on the production. 19 treatments were proven with Chloride of potassium, Sulfate of potassium and Nitrate of potassium, with fhosphite of Calcium, Magnesium and Potassium, more a witness without applications. The used experimental design was complete Blocks at random in three repetitions, the evaluated variables were subjected to the variancia analysis, and the test was applied from Tukey to 95% of probability. The evaluated parameters were: plant height, days to flowering, longitude and ear diameter and yield for hectare. Found increases in grain yield with three treatments, highlighting the treatment with the application of muriate of potash in conjunction with Calcium phosphide (9451,65 kg ha1 ). The results indicate the possibility of increases of more than 49% in relation to the witness (6339 kg ha1 ) where there was applied the treatments.

Grain yield, dry matter remobilization and chlorophyll content in maize (Zea mays L.) as influenced by nitrogen and water deficit

2018 ◽  
Vol 44 (3) ◽  
pp. 359-356
Author(s):  
Mahta Haghjoo ◽  
Abdollah Bahrani
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Chlorophyll Content ◽  
Water Deficit ◽  
Chlorophyll A ◽  
Dry Matter ◽  
Zea Mays L ◽  
Nitrogen Application ◽  
Significant Difference ◽  
Biological Yield

Out of 20, 40, 60 and 80 per cent moisture depletion 20% showed significantly higher grain yields, biological yield, chlorophyll a, b than the others. However, the highest contribution of stem and leaf dry matter remobilization in grain yield were obtained in 80% moisture depletion and 300 kg N/ha and the lowest one was found in the 20% moisture depletion and 150 kg N/ha. Nitrogen application increased all traits, however there were no significant difference between 250 and 300 kg N/ha.

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