It has been an important food crop since ancient times, especially among the peoples of central and south america. Read, highlight, and take notes, across web, tablet, and phone. A standardization of terminology for the morphological description of corn seedlings. Recently teosinte the related genera of zea has been included as zea mexicana. K department of botany, open university of sri lanka, nawala, nugegoda, sri lanka abstract maize or corn zea mays l.
The dynamic changes in roots, shoot biomass, and rootshoot ratio throughout corn developmental stages are presented in fig. Zea, genus of five species of large grasses of the family poaceae, native to mexico and mesoamerica. Taller plants with more leaves need a larger growing area and lower plant density than shorter ones begna et al. Chapter 14 seeds and fruits university of california, davis. The chemical accelerated tassel elongation as related to the control. We would like to show you a description here but the site wont allow us. Physical and chemical characteristics of blue corn from. Family poaceae on the properties of soil perera, k. Zea mays maize, corn vincent major reference works.
Homeotic sexual translocations and the origin of maize zea mays, poaceae. Baixe no formato doc, pdf, txt ou leia online no scribd. The functionally male florets are borne on the tassel. These are most likely to be deficient where the ph is high. Morphology of flowers of zea mays 5 the male and female parts of this aborted flower make about equal development, the stamens being about as well developed as those of the functional female flower, and the pistil resembling that in the normal male flower.
Contributions of zea mays subspecies mexicana haplotypes. Careful management is required to maximize field area allocated to female plants while ensuring sufficient quantities of pollen from the male parent are available to fertilize ovules on female plants. Request pdf physical and chemical characteristics of blue corn from two races. The bestknown species is corn, or maize zea mays mays, which was derived from one of the mexican teosintes likely z. Although most grasses have bisexual florets the mature florets of z. Maize zea mays 2n 20 maize is the most important cereal in the world after wheat and rice. Usda, ars, germplasm resources information network. Blastable datasets include zea mays genomic dna, splicealigned transcripts and proteins, gene models, and other aligned sequences. Curvularia lunata, morphology, dna, restriction pro le. Uptake, transport and metabolism of phosphates by individual roots of zea mays l. The lodicules are also present and pretty well developed fig. The leafy stalk of the plant produces pollen inflorescences and separate ovuliferous inflorescences called ears that yield kernels or seeds, which are fruits. Spliced alignment of userspecified transcript datasets to genomic dna from any region in zmgdb. The report will display the kingdom and all descendants leading down to the name you choose.
A taxonomic species within the family poaceae maize or corn us, domesticated in central america, now grown worldwide. Zea is a genus of flowering plants in the grass family. Root dw for the two varieties reached a maximum at the vt stage fig. Zea mays in the germplasm resources information network grin, u. Distinguished economic botanist address, presented to the 39th annual meeting of the society for economic botany, university of aarhus, denmark, july 15, 1998.
Morphological and physiological characteristics of corn. Mays maize jt00147699 document complet disponible sur olis dans son format dorigine complete document available on olis in its original format envjmmono200311 unclassified english or. Owing to increased plant density, plant height and ear height may increase as the plants compete for light park et al. 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. Pdf morfologi tanaman jagung zea mays imam bachrul. A study on the impacts of corn cultivation zea mays l. At all stages of growth, the root system of dh661 were about twice as that of zd958 which should result in greater ability to explore the soil for water and nutrients.
Homeotic sexual translocations and the origin of maize. Figure 1 shows a phylogenetic tree of grass species related to maize. Zea mays, more commonly referred to as maize, is a member of the grass family poaceae, or true grasses. Several wild species are commonly known as teosintes and are native to mesoamerica.