The impact of genotype x soil texture interaction on the efficiency of selection for yield in maize (Zea mays L.)

Euphytica ◽  
1992 ◽  
Vol 61 (1) ◽  
pp. 61-65
Author(s):  
T. Koutsos ◽  
M. Koutsika-Sotiriou ◽  
A. C. Fasoulas
Keyword(s):  
Zea Mays ◽  
Soil Texture ◽  
Zea Mays L ◽  
Selection For ◽  
Efficiency Of Selection ◽  
The Impact

scholarly journals Impact of Macronutrients and Micronutrients on Soil Health Nutrients Concentration and Uptake by Maize (Zea mays L)

2021 ◽  
Vol 10 (9) ◽  
pp. 199-206
Author(s):  
M. L. Bubarai U. Bapetel ◽  
A. Musa Mala
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Soil Health ◽  
Soil Science ◽  
Soil Reaction ◽  
Chemistry Research ◽  
Agricultural Chemistry ◽  
Copper Zinc ◽  
Nutrients Concentration ◽  
The Impact

At the SHUATS Department of Soil Science and Agricultural Chemistry Research Farm, an experiment was conducted with the goal of determining the impact of application of macro and micronutrients, on soil health nutrients concentration and uptake by maize (Zea mays L). The experiment was put up based on this over a two-year period, beginning with the 2017 and 2018 cropping periods. Crbd was used as the experimental technique and it was replicated thrice with the following treatments combinations, NPK @ 50 and 100kgha -1, while for the micronutrients (Boron, Zinc and Copper) three levels of combination were used 0.3, 6 and 9kgha-1. The research project's findings showed all the determinants of soil health like soil reaction organic matter among others are at levels suitable for nutrients actions and plant growth, while plant parameters like maize cob diameter, dry matter, and nutrients concentrations in maize tissues have greatly improved. NPK @100kgha-1, Copper, Zinc, and Boron @ 9kgha-1 were the best treatment combinations with the best results. The above combinations of treatments will be suitable for the soils of that location based on the results of these studies.

scholarly journals Assessing the Impact of Biologically Synthesized ZnO Nanoparticles as Source of Nutrient on the Growth of Zea mays L.

2020 ◽  
Author(s):  
Sumera Sabir ◽  
Muhammad Asif Zahoor ◽  
Muhammad waseem ◽  
Muhammad Hussnain Siddique ◽  
Muhammad Shafique ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zno Nanoparticles ◽  
Zea Mays L ◽  
The Impact

Abstract The authors have withdrawn this preprint due to erroneous posting.

scholarly journals The Effect of Climate Change on Spring Maize (Zea mays L.) Suitability across China

2018 ◽  
Vol 10 (10) ◽  
pp. 3804 ◽  
Author(s):  
Yuhe Ji ◽  
Guangsheng Zhou ◽  
Qijin He ◽  
Lixia Wang
Keyword(s):  
Climate Change ◽  
Zea Mays ◽  
Zea Mays L ◽  
Threshold Value ◽  
Affected Area ◽  
Mitigation And Adaptation ◽  
Spring Maize ◽  
New Perspective ◽  
Abrupt Shifts ◽  
The Impact

Spring maize (Zea mays L.) is a thermophilic C4 crop which is sensitive to climate change. This paper provides a detailed assessment of the effect of climate change on the crop from a new perspective, by predicting the probability of the potential distribution of spring maize across China. The affected area of spring maize suitability was identified, and then the affected area was subdivided into the improved area and the deteriorated area. Our results confirmed that there was a detrimental consequence for spring maize suitability under observed climate change from 1961–1990 to 1981–2010. However, our results revealed that warming scenarios of 1.5 °C and 2 °C were helpful for the suitable area expansion of spring maize. The affected area was smaller under warming scenarios than under historical climate change, revealing that temperature rise alone was not enough to trigger a “tipping point” (a threshold value after which abrupt shifts occur) for spring maize, even if warming is 2 °C above the level of 1961–1990. Our results not only benefit China in the design of mitigation and adaptation strategies, but also provide a theoretical judgement that the impact of global warming on the crop ecosystem is not serious if other climate factors remain unchanged.

Interplant root competition leads to an overcrowding effect in maize

2009 ◽  
Vol 89 (6) ◽  
pp. 1041-1045 ◽  
Author(s):  
W Jiang ◽  
K Wang ◽  
G Jiang ◽  
Q Wu ◽  
J Zhang ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Accumulation Rate ◽  
Grain Filling ◽  
Plant Performance ◽  
Root Competition ◽  
Shoot Biomass ◽  
Lag Phase ◽  
Maize Hybrids ◽  
The Impact

We conducted an experiment with two maize hybrids (Zea mays L.) to examine the effect of interplant root competition on root growth and to evaluate the impact to total plant performance. Two maize hybrids (Jinhai 5 and Denghai 3719) were grown either with no root competition in their own plot (owners) or as individuals sharing twice the space and nutrients (sharers). Plants were sampled every other week after pollination to track changes in root and shoot biomass. The carbohydrate allocation was smaller in the roots of sharers compared with owners at the pro-phase of grain filling and shoot accumulation was slightly accelerated during this period. However, at the lag phase, the accumulation rate in the shoots of individual plants was distinctly lower than in owners, as a result of earlier root senescence. Overall, shoot mass was reduced by 8% in sharers of both hybrids, while they showed a similar root to shoot ratio compared with the owners. Although the “sharing” treatment was confounded by larger soil spaces, the effects of larger soil volume and interplant root competition were different, and demonstrate that interplant root competition has an inhibitory effect on roots. Maize plants displayed an overcrowding effect (or an escape strategy) by allocating more carbohydrate to the shoots at the expense of the roots when faced with interplant root competition.Key words: Overcrowding effect, interplant root competition, maize (zea mays L.), root discrimination

Soil Texture and the Phenotypic Expression of Maize (Zea mays L.)

2006 ◽  
Vol 1 (3) ◽  
pp. 139-143
Author(s):  
B.O. Akinyele . ◽  
A.B. Adigun .
Keyword(s):  
Zea Mays ◽  
Soil Texture ◽  
Zea Mays L ◽  
Phenotypic Expression

PERFORMANCE UNDER STRESS OF ADVANCED CYCLES OF FOUR POPULATIONS OF CORN (Zea mays L.) IN AN S1 PER SE RECURRENT SELECTION PROGRAM

1981 ◽  
Vol 61 (1) ◽  
pp. 29-36
Author(s):  
O. A. ADARA ◽  
L. W. KANNENBERG
Keyword(s):  
Zea Mays ◽  
Grain Yield ◽  
Recurrent Selection ◽  
Zea Mays L ◽  
Selection Criterion ◽  
Grain Filling ◽  
Primary Selection ◽  
Per Se ◽  
Selection For ◽  
Advanced Cycles

Two cycles of S1 per se recurrent selection were conducted in four populations of corn (Zea mays L.). The primary selection criterion was a performance index: grain yield divided by percent moisture at harvest. The original (C0) source material and first cycle (C1) of selection for each population were evaluated in a favorable (1977) and an unfavorable (1978) growing season. Second cycle (C2) materials were also included in the 1978 comparisons. In 1977, C1 yielded significantly more grain than C0 in three of the four populations. In contrast, performance of C1 and C2 materials in 1978 was inferior to C0 in all populations but one. The advanced cycles of only one population showed improvement over C0 in both years. Comparisons of the 1977 data for days to silking, grain yield, and percent ear moisture at harvest suggest that rate of grain filling in C1 was higher than in C0 for all populations. The higher rates of grain filling in the advanced cycles may have caused a carbohydrate deficiency under stress (1978) so that the leaves no longer functioned normally and kernel filling was terminated prematurely. In general, the four populations showed inherent differences in their respective responses to selection, to environmental stress, and to inbreeding.

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