Variation in phytolith assemblages within a population of corn (cv. Mandan Yellow Flour)

1990 ◽  
Vol 68 (8) ◽  
pp. 1638-1645 ◽  
Author(s):  
Susan C. Mulholland ◽  
George Rapp Jr. ◽  
Amy L. Ollendorf ◽  
Ronald Regal
Keyword(s):  
Zea Mays ◽  
Statistical Analysis ◽  
Great Plains ◽  
Zea Mays L ◽  
Morphological Characters ◽  
Individual Plant ◽  
Leaf Position ◽  
Plant Group ◽  
Two Samples ◽  
Multiple Samples

This project investigates the effects of leaf side, leaf position, individual plant, and hill (or plant group) on phytolith assemblages from Zea mays L. cultivar Mandan Yellow Flour. Thirty-two samples were examined, and 200 phytoliths were classified from each sample. Statistical analysis indicates that leaf side is significant at the 0.05 level above random counting variation; leaf position, individual plant, and hill are not generally significant beyond the effect of leaf side. Analysis of a single sample, either a half or entire leaf, is not sufficient for compilation of representative phytolith assemblages from a plant population. Phytolith reference collections should not be based on single samples of each species. Multiple samples from a population need to be analyzed to obtain information on assemblage variation within the population. The variation of corn phytolith assemblages in this study overlaps those of many Panicoid grasses, indicating that additional morphological characters need to be identified to distinguish corn from wild grasses in the Great Plains. Key words: phytoliths, corn, frequencies, variation.

Relationship between lodging, morphological characters and yield of varieties of maize (Zea mays L.)

1978 ◽  
Vol 91 (3) ◽  
pp. 633-638 ◽  
Author(s):  
S. U. Remison ◽  
Dele Akinleye
Keyword(s):  
Zea Mays ◽  
Field Experiments ◽  
Zea Mays L ◽  
Growing Season ◽  
Morphological Characters ◽  
Growing Seasons ◽  
Basal Internode ◽  
Ear Height ◽  
The Relationship ◽  
Rainforest Zone

SummaryField experiments were carried out in the early and late growing seasons in the rainforest zone of Nigeria to find out the relationship between lodging, morphological characters and yield of maize.Morphological characters associated with lodging were plant height, ear height and length of basal internode. There was a negative correlation between lodging and yield. Much of the lodging recorded, especially in the early growing season, was due to weak stems. Earliness, diameter of stem and leaf area had no relationship with lodging.

scholarly journals Effect of Gamma Irradiation of Seeds on the Development and Productivity of Three Maize Varieties (Zea mays. L) in Côte D’ivoire

2021 ◽  
pp. 89-99
Author(s):  
Yao Kouakou Francois Konan ◽  
Ayolié Koutoua ◽  
Soro Dogniméton ◽  
Koné Sié Kissomanbien ◽  
Kouadio Akéssé Blaise ◽  
...  
Keyword(s):  
Zea Mays ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Zea Mays L ◽  
Descriptive Analysis ◽  
Morphological Characteristics ◽  
Morphological Characters ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
Maize Varieties

Climate variability has been and continues to be the main source of food fluctuations. This variability threatens the production of cash crops such as maize (Zea mays L). Maize is a cereal and has become one of the main agricultural crops in Côte d’Ivoire. The objective of this study is to determine the agro-morphological characteristics of three (03) varieties of maize (EV 8728, GMRP / 18 and MDJ) which have undergone irradiation with gamma radiation (0, 100, 200 and 300 grays) to induce mutations. The agro-morphological evaluation was carried out in a completely randomized block device. morphological characters selected from the descriptors of maize were used in this study. The descriptive analysis revealed a significant diversity between the treatments. The comparison between all the agro-morphological characters and the different treatments showed that the treatments EV8728_0 and EV8728_100 Gy had the best characteristics of ears and grains and the treatment MDJ_200 had the best vegetative characteristics.

scholarly journals Respons Tanaman Jagung (Zea mays l.) Terhadap Pemberian Kombinasi Pupuk Anorganik dan Pupuk Organik Fermentasi (Porasi) Kotoran Sapi

2021 ◽  
Vol 9 (2) ◽  
pp. 127
Author(s):  
Rudi Priyadi ◽  
Ade Hilman Juhaeni ◽  
Candy Kusuma Dewi
Keyword(s):  
Zea Mays ◽  
Statistical Analysis ◽  
Sea Level ◽  
Plant Height ◽  
Zea Mays L ◽  
Block Design ◽  
Cow Dung ◽  
Randomized Block Design ◽  
Npk Fertilizer ◽  
Experimental Garden

This study aims to determine the dose combinations of inorganic fertilizers and the fermentation of organic cow dung that respond well to corna. This research was conducted by August to November 2020, in the experimental garden of the Agriculture Faculty, Siliwangi University, Mugarsari Village, Tamansari District, Tasikmalaya City with a height of 360 meters above sea level (m asl). The study used a randomized block design (RBD) with 6 treatments and was repeated 4 times. Dose tested P0 = control (without being given fertilizer), P1 = Poration of cow dung 20 t / ha, P2 = NPK 300 kg / ha, P3 = NPK 250 kg / ha + cow dung poration 5 t / ha, P4 = NPK 200 kg / ha + poration of cow dung 10 t / ha and P5 = NPK 150 kg / ha + poration of cow dung 15 t / ha. The results showed that the application of NPK fertilizer and cow dung could be responded to by corns, with the results of statistical analysis that was significantly different on plant height at 18 DAS, weight of 100 seeds and shelled weight per hectare.

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 D2 statistical analysis of yield contributing traits in maize (Zea mays L.) inbreds

2018 ◽  
Vol 44 (4) ◽  
pp. 629-634
Author(s):  
FMA Haydar ◽  
NK Paul ◽  
MA Khaleque
Keyword(s):  
Genetic Diversity ◽  
Zea Mays ◽  
Statistical Analysis ◽  
Analysis Of Variance ◽  
Genetic Divergence ◽  
Zea Mays L ◽  
Inbred Lines ◽  
Wide Range ◽  
Cluster Distance ◽  
Range Of Variation

Investigation was carried out to determine the genetic divergence in the 25 maize inbred lines. Analysis of variance revealed highly significant differences among all the inbreds. Inbreds were grouped into five clusters, indicating the presence of genetic diversity. The clusters I, IV and V had the highest number of inbreds (6). The maximum inter-cluster distance was observed between clusters I and III (19.279) and the highest intra-cluster distance was recorded in cluster III (0.243) and also wide range of variation was observed in cluster mean performance for the characters studied. Intercrossing among the inbreds belonging to clusters II and III was suggested to develop high yielding inbreds with desirable characters.

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