The origin of the naked grains of maize
WebbThe most critical step in maize (Zea mays ssp. mays) domestication was the liberation of the kernel from the hardened, protective casing that envelops the kernel in the maize … Webb14 sep. 2016 · Maize (Zea mays ssp. mays) originated in Mexico and Central America and belongs to the tribe Maydae of the family Poaceae. It possesses over 32,000 genes on ten chromosomes with a genome size of...
The origin of the naked grains of maize
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Webb27 okt. 2009 · Modern crops have usually experienced domestication selection and subsequent genetic improvement (post-domestication selection). Chinese waxy maize, which originated from non-glutinous domesticated maize (Zea mays ssp. mays), provides a unique model for investigating the post-domestication selection of maize. In this study, … WebbThe Native Americans founded it and it quickly spread to other parts of the world. The Native Americans transformed maize by carefully cultivating. Maize developed from a wild grass called Teosinte that originally grew in Southern Mexico, 7,000 years ago. The Teosinte kernels looked completely different from the kernels of today’s corn or maize.
Webb23 juli 2024 · Domestication is a tractable system for following evolutionary change. Under domestication, wild populations respond to shifting selective pressures, resulting in adaptation to the new ecological niche of cultivation. Owing to the important role of domesticated crops in human nutrition and agriculture, the ancestry and selection … WebbThe history of modern-day maize begins at the dawn of human agriculture, about 10,000 years ago. Ancient farmers in what is now Mexico took the first steps in domesticating maize when they simply chose which kernels (seeds) to plant. These farmers noticed that not all plants were the same.
Webb1 aug. 2005 · The most critical step in maize (Zea mays ssp. mays) domestication was the liberation of the kernel from the hardened, protective casing that envelops the kernel in … Webbvariant for the origin of the naked grains of maize compared to the covered grains of teosinte. However, the predominant mechanism for morphological evolution may be ...
WebbNational Center for Biotechnology Information
WebbThe most critical step in maize (Zea mays ssp. mays) domestication was the liberation of the kernel from the hardened, protective casing that envelops the kernel in the maize progenitor, teosinte. This evolutionary step exposed the kernel on the surface of the ear, such that it could readily be used by humans as a food source. early motherhood in gamu isabelaWebb4 maj 2015 · Genetics. teosinte glume architecture1 (tga1), a member of the SBP-box gene family of transcriptional regulators, has been identified as the gene conferring naked … cst sand tiresWebb4 maj 2015 · In this article, we have shown that an amino acid substitution in tga1 is the causal variant that underlies the origin of the naked grains of maize as compared to the covered grains of teosinte. Although the predominant mechanism for morphological evolution may be alterations in gene expression ( Carroll 2008 ), changes in protein … csts buxtonWebbThe origin of the naked grains of maize Yves Vigouroux 2005, Nature The most critical step in maize domestication (Zea mays ssp. mays) was the liberation of the kernel from the hardened, protective casing that … csts and ossaWebbDomestic science A simple genetic change liberated the naked kernel from the protective casing that envelops it in the maize progenitor, teosinte. With the kernel exposed on the surface of the ear it was readily utilized as a food source by humans. The domestication of maize was under way. cst scarboroughWebbFigure 1 tga1 and not1 gene expression and protein accumulation. (A) RT-qPCR results showing tga1 (top panel) and not1 (bottom panel) expression. tga1 expression was not statistically different between genetic stocks (ANOVA: P = 0.9467, n = 10). not1 expresses less when tga1 is a maize allele. Maize-not1 expresses less in W22 than in T249 and … csts calgaryWebbThe origin of the maize ear has been considered one of the greatest mysteries in both crop domestication 3 and plant evolution 4.While a wealth of botanical and genetic … early mosaics