The leafy stalk of the plant produces pollen inflorescences and separate ovuliferous inflorescences called ears that yield kernels or seeds, which are fruits. The stem morphology of three versions normal, malesterile, and restored of five lines of corn zea mays l. The diversity of archaea and bacteria in association with. On average, about 50% of the increase is due to management and 50% to breeding.
The basidiomycete ustilago maydis causes smut disease in maize zea mays by infecting all plant aerial tissues. Most of the accessions showed high contents of tryptophan 0. The contribution of breeding to yield advances in maize. Agronomy journal abstract nitrogensulfur relationships. Journal of material cycles and waste management 2019 21. The order of the genes c, sh and wx in zea mays with. Anatomy of monocot roots zea mays those plants whose seed contains only one cotyledon or embryonic leaf is known as monocotyledon or simply monocot. Creighton, barbara mcclintock proceedings of the national academy of sciences aug 1931, 17 8 492497. 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. The cut ends of excised zea mays roots were sealed to a pressure transducer and their root pressures recorded. 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. 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. Comparative metabolic response between cucumber cucumis.
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. Figure 1 shows a phylogenetic tree of grass species related to maize. Effects of plant density and interrow spacing on the yield and other characteristics of two maize hybrids. Plant breeding and improved management practices have produced this gain jointly. Yielding and growth parameters of maize zea mays l. Adolescents declining motivation for science learning. Effects of nitrogen and plant density on maize zea mays l. Family poaceae on the properties of soil perera, k. Phenotypic diversity of farmers traditional maize zea mays l varieties in cote divoire. Effects of population density upon agronomic traits associated with genetic increases in yield of zea mays l.
Effect of integrated nutrient management on baby corn zea. The objective of this paper is to remotely evaluate the phenological development of maize zea mays l. Analysis of mutants of three genes that influence root hair development in zea mays gramineae suggest that root hairs are dispensable. Pdf effect of integrated nutrient management on yield of. In egypt, maize is considered as one of the main cereal crops, comes the third after wheat and rice. Effect of storage temperatures on phenotypic and gene. Samples of exudate were collected at lower applied pressures. Patterns of dna sequence polymorphism along chromosome 1. Polygonumtype embryo sac development was examined in zea mays with light, fluorescence, and electron microscopy. Zea mays phaseolus vulgaris inoculated with azospirillum. Maize accounts for 31% of the world production of cereals occupying almost onefifth of the worldwide land dedicated for cereal production. A study on the impacts of corn cultivation zea mays l.
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. Pdf genetic diversity analysis of maize zea mays l. These rose approximately hyperbolically to a maximum value of 4. 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.
Acetochlor and pendimethalin alone, s metolachlor plus mesotrione, and the threeway combination of s metolachlor plus atrazine plus mesotrione provided the most consistent. For each locus, we sequenced a common sample of 25 individuals representing 16 exotic landraces and nine u. International journal of scientific and research publications, volume 4, issue 7, july 2014 1 issn 22503153. A research journal possible combinations of five levels of nitrogen chemical and vermicompost fertilizer with and without biofertilizer. 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. Archeological and molecular data indicates that modern maize was domesticated from annual balsas teosinte zea mays ssp. A correlation of cytological and genetical crossingover in zea mays harriet b. The critical period of weed control in grain corn zea mays. A correlation of cytological and genetical crossingover. Influence of nitrogen fertilizer and plant density on some physiological aspects and grain yield of maize zea mays l.
The cytological identification of the chromosome associated with the rg linkage group in zea mays. The efficient use of water will become increasingly important for rain. In this section, you will learn about characteristics and anatomy of monocot root. Magnesium accumulation, partitioning and remobilization in. Our research has found that commercial popcorn also contains significant amounts of the class of antioxidants known as phenolic acids. The infection causes leaf chlorosis and stimulates the plant to produce nutrientrich niches i. Maize is dual propose crop, used as a food for human and feed for livestock. Megasporocyte polarity is expressed in organelle distribution, aniline blue wall fluorescence, and chalazal location of plasmodesmata. Studies of root function in zea mays plant physiology. The diversity of archaea and bacteria in association with the roots of zea mays l microb ecol 41, 252263 2001. The diversity of archaea and bacteria in association with the roots of zea mays l. Two field experiments were conducted for two years in the summer of 1997 and 1998.
Pdf journal of stored products and postharvest research. Monitoring crop phenology is required for understanding intra. Presently baby corn is gaining popularity among indian farming communities mainly due to its short duration, high market rate, nutritive value and also. 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. Maize is very essential either for the human food or animal feeding and a common ingredient for industrial products. 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 root system is dominated by 2030 adventitious roots which emerge in rings from the stem base pointing radially downwards and outwards, approximately. It is grown in pakistan as a major cash crop under the area of 1. 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. Previous studies have recorded high accumulation of soluble sugars and starch within these tumors. The critical period of weed control in grain corn zea mays volume 40 issue 3 michael r. Xylem exudate could not be collected at this pressure since the flow rate was zero. Agronomy free fulltext estimation of maize zea mays.
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. Relationships with kernel properties and water uptake. Agronomy journal abstract growth stages of corn zea. 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. Journal of agricultural and food chemistry 2018, 66 , 33583366. Fine structure of megagametophyte development in zea mays. Zea mays, more commonly referred to as maize, is a member of the grass family poaceae, or true grasses.
Distinct genetic architectures for phenotype means and. Maize cultivation led to 12 billion bushels of grain in the usa alone. Corn stems in both the malesterile texas cytoplasm and restored versions of line mp466 were shorter than the normal version. Hugues a nda vol 64, no 3 2019 agronomic performance and grain yield of mexican purple corn populations from ixtenco, tlaxcala. Lijuan zhao, qirui hu, yuxiong huang, and arturo a. We measured sequence diversity in 21 loci distributed along chromosome 1 of maize zea mays ssp.
Effect of integrated nutrient management on baby corn zea mays l. Virtually all of the longitudinal strands intergrade structurally however, from one bundle type to another as they. 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 any given transverse section the longitudinal strands may be divided into three types of bundle according to size and structure. 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. 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. Response at genetic, metabolic, and physiological levels of maize zea mays exposed to a cuoh2 nanopesticide. Popcorn, one of the most popular snack foods in the world, is known for being a high fiber, healthy food.
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