Pdf effect of integrated nutrient management on yield of. The efficient use of water will become increasingly important for rain. Journal of material cycles and waste management 2019 21. Effects of plant density and interrow spacing on the yield and other characteristics of two maize hybrids. Response at genetic, metabolic, and physiological levels of maize zea mays exposed to a cuoh2 nanopesticide. For each locus, we sequenced a common sample of 25 individuals representing 16 exotic landraces and nine u.
Plant breeding and improved management practices have produced this gain jointly. Effects of population density upon agronomic traits associated with genetic increases in yield of zea mays l. Megasporocyte polarity is expressed in organelle distribution, aniline blue wall fluorescence, and chalazal location of plasmodesmata. Patterns of dna sequence polymorphism along chromosome 1. Virtually all of the longitudinal strands intergrade structurally however, from one bundle type to another as they. Pdf genetic diversity analysis of maize zea mays l. Acetochlor and pendimethalin alone, s metolachlor plus mesotrione, and the threeway combination of s metolachlor plus atrazine plus mesotrione provided the most consistent. Creighton, barbara mcclintock proceedings of the national academy of sciences aug 1931, 17 8 492497. Archeological and molecular data indicates that modern maize was domesticated from annual balsas teosinte zea mays ssp. Fine structure of megagametophyte development in zea mays. Popcorn, one of the most popular snack foods in the world, is known for being a high fiber, healthy food. Relationships with kernel properties and water uptake. The objective of this paper is to remotely evaluate the phenological development of maize zea mays l.
A total of maize populations from the droughttolerant mini core collection from maize research institute gene bank were evaluated for oil, protein, and tryptophan contents, fatty acid fa composition, and kernel characteristics. Zea mays, more commonly referred to as maize, is a member of the grass family poaceae, or true grasses. The stem morphology of three versions normal, malesterile, and restored of five lines of corn zea mays l. The contribution of breeding to yield advances in maize. Maize cultivation led to 12 billion bushels of grain in the usa alone. Presently baby corn is gaining popularity among indian farming communities mainly due to its short duration, high market rate, nutritive value and also. Comparative metabolic response between cucumber cucumis. Anatomy of monocot roots zea mays those plants whose seed contains only one cotyledon or embryonic leaf is known as monocotyledon or simply monocot. Adolescents declining motivation for science learning. Effect of storage temperatures on phenotypic and gene. The anchorage system of mature maize zea mays was investigated by combining morphological and anatomical study of the root system with mechanical tests on roots and with studies in which plants were pulled over. Previous studies have recorded high accumulation of soluble sugars and starch within these tumors. Yielding and growth parameters of maize zea mays l. Hugues a nda vol 64, no 3 2019 agronomic performance and grain yield of mexican purple corn populations from ixtenco, tlaxcala.
On average, about 50% of the increase is due to management and 50% to breeding. Field studies were conducted in central and southcentral texas from 20 through 2015 to evaluate crop tolerance and efficacy of various preemergence herbicides alone and in combination for weed control in field corn. These rose approximately hyperbolically to a maximum value of 4. Samples of exudate were collected at lower applied pressures. The possibility of using quenching analysis of chlorophyll a fluorescence as a selection tool for improving the cold tolerance of maize was investigated in six genotypes differing greatly in the ability to develop a competent photosynthetic apparatus at low temperature. In egypt, maize is considered as one of the main cereal crops, comes the third after wheat and rice. Pdf journal of stored products and postharvest research.
The infection causes leaf chlorosis and stimulates the plant to produce nutrientrich niches i. Our research has found that commercial popcorn also contains significant amounts of the class of antioxidants known as phenolic acids. The data indicated that maize has an average of one single nucleotide polymorphism snp every 104 bp between two randomly sampled sequences, a level of. Two field experiments were conducted for two years in the summer of 1997 and 1998. Field studies were conducted in 2016 and 2017 under rainfed conditions in southcentral louisiana, a to determine the effects of plant density levels on plant height, ear height, stalk diameter, lodging, corn grain yield, test weight, and photosynthetically active radiation with modern corn hybrids in central louisiana and b to test the hypothesis that the response of grain yield to plant. Corn scientifically known as zea mays is also referred to as maize is a large grain plant first domesticated about 10,000 years ago by indigenous peoples in mexico. The cytological identification of the chromosome associated with the rg linkage group in zea mays. A research journal possible combinations of five levels of nitrogen chemical and vermicompost fertilizer with and without biofertilizer.
The order of the genes c, sh and wx in zea mays with. The cut ends of excised zea mays roots were sealed to a pressure transducer and their root pressures recorded. Maize is dual propose crop, used as a food for human and feed for livestock. Effects of nitrogen and plant density on maize zea mays l. Agronomy free fulltext estimation of maize zea mays. Figure 1 shows a phylogenetic tree of grass species related to maize. The basic concept underlying the principles of integrated nutrient management inm is the maintenance and improvement of soil fertility for sustaining crop productivity both quantity and quality wise. Journal of stored products and postharvest research postharvest loss assessment of maize zea mays along its value chain in nigeria article pdf available january 2019 with 798 reads. A correlation of cytological and genetical crossingover. Polygonumtype embryo sac development was examined in zea mays with light, fluorescence, and electron microscopy. Lijuan zhao, qirui hu, yuxiong huang, and arturo a. Influence of nitrogen fertilizer and plant density on some physiological aspects and grain yield of maize zea mays l.
Maize is thought to have originated 5570 million years ago in what is now central or south america and has since diversified into nearly 10 000 nondomestic relatives. Maize accounts for 31% of the world production of cereals occupying almost onefifth of the worldwide land dedicated for cereal production. Analysis of mutants of three genes that influence root hair development in zea mays gramineae suggest that root hairs are dispensable. Family poaceae on the properties of soil perera, k. The diversity of archaea and bacteria in association with the roots of zea mays l microb ecol 41, 252263 2001. Standardization of crop yield estimation methods at various levels of farming helps to obtain accurate agricultural statistics as well as assessing the suitability of agricultural practices under various production conditions. Distinct genetic architectures for phenotype means and.
Studies of root function in zea mays plant physiology. Agronomy journal abstract growth stages of corn zea. A correlation of cytological and genetical crossingover in zea mays harriet b. Magnesium accumulation, partitioning and remobilization in. Journal of agricultural and food chemistry 2018, 66 , 33583366. In this section, you will learn about characteristics and anatomy of monocot root. Perti dishes experiments were conducted at botany lab of university of gujratpakistan during 2010 for the study of nacl effect on maize zea mays l. Agronomy journal abstract nitrogensulfur relationships. This document provides an overview of baseline biological information relevant to risk assessment of genetically modified forms of the species that may be released into the. It is grown in pakistan as a major cash crop under the area of 1. Corn stems in both the malesterile texas cytoplasm and restored versions of line mp466 were shorter than the normal version. Monitoring crop phenology is required for understanding intra. Most of the accessions showed high contents of tryptophan 0.
Maize is very essential either for the human food or animal feeding and a common ingredient for industrial products. Zea mays, commonly known as maize or corn, is a plant organism of paramount importance as a food crop, biofuel production platform and a model for studying plant genetics. The critical period of weed control in grain corn zea mays volume 40 issue 3 michael r. Genetic variability, heritability and genetic variance in s1 progenies of extraearly and early maize zea mays l. Chlorophyll fluorescence as a selection tool for cold. International journal of scientific and research publications, volume 4, issue 7, july 2014 1 issn 22503153.
The basidiomycete ustilago maydis causes smut disease in maize zea mays by infecting all plant aerial tissues. The root system is dominated by 2030 adventitious roots which emerge in rings from the stem base pointing radially downwards and outwards, approximately. The diversity of archaea and bacteria in association with. Phenotypic diversity of farmers traditional maize zea mays l varieties in cote divoire.
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