Flowering and determinacy in maize
WebJan 30, 2008 · Given the rich history of maize genetics and the agronomic importance of its seeds, maize is an excellent and important system for understanding how unisexuality can evolve in flowering plants. Mutations that feminize tassel florets can be identified easily by the presence of seeds and fuzzy silks (female stigmas) in the male tassel (Figure 1a ). WebRegulation of spikelet determinacy Conversely, high levels of miR172 and the loss of function Spikelet determinacy in wheat and barley is largely de‐ of Q (three homoeoalleles) leads to sterile lemmas and the termined by the elongation or suppression of the spikelet indeterminacy of the spikelet meristem (Debernardi et al. axis, known as the ...
Flowering and determinacy in maize
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WebSep 1, 2008 · Sex determination in the flowers of maize involves the abortion of stamen or pistil development. Recent work investigating genes that control this process reveals that a microRNA is involved in both the sex determination of the male inflorescence and its growth pattern. ... MicroRNA, sex determination and floral meristem determinacy in maize ... WebOther pathways, such as sex determination, are likely to be found only in maize with its separate male and female flowers. A rich genetic history has resulted in a large collection of maize mutants. The advent of genomic tools and synteny across the grasses now permits the isolation of the genes behind inflorescence architecture and the ability ...
WebJun 1, 2002 · Meristems may be determinate or indeterminate. In maize, the indeterminate inflorescence meristem produces three types of determinate meristems: spikelet pair, spikelet and floral meristems. These meristems are defined by their position and their products. We have discovered a gene in maize, indeterminate floral apex1 (ifa1) that … WebSee Page 1. this time, the wild ancestor of maize, teosinte, has been under natural selection that favors those traits that improve the chance of survival and reproduction in the wild. …
WebDec 1, 2014 · During the reprogramming of the flowering process, the pistil smut fungus appears capable of altering the determinacy of buffalograss meristems, either positively or negatively. For example, we found that meristems that normally would have remained vegetative (indeterminate) become transitioned into flowering apices (determinate) and … WebFeb 1, 2007 · Maize and rice appear to have conserved mechanisms of meristem maintenance and organ identity. Other pathways, such as sex determination, are likely to …
WebHere, we begin to define the genetic regulatory network to which the maize domestication gene, teosinte branched1 (tb1), belongs. Using a combination of molecular methods to …
WebJul 24, 2005 · The plant morphologist W. Troll surveyed some 40,000 species to infer that the flowering plant shoot is comprised of zones defined by branch determinacy and their relationship to the parent shoot ... liteline s203wsWebMar 1, 2007 · Flowering and determinacy in maize. All plant organs are produced by meristems, groups of stem cells located in the tips of roots and shoots. Indeterminate meristems make an indefinite number of organs, whereas determinate meristems are consumed after making a specific number of organs. Maize is an ideal system to study … liteline slm4-12w-cct-whbkWebFeb 24, 2009 · A pH of 6.0 to 6.5 is optimal for most perennials. Most Georgia soils are acid and require the addition of lime to correct pH. In the absence of a soil test, add a … liteline slm4-30-whWebJan 30, 2008 · In maize, imperfect florets arise by the arrest of stamen development in female flowers and by the abortion of pistil primordials in the male, suggesting that sex … impfpass holenWebMaize is a monoecious plant with staminate flowers borne in a tassel and pistillate flowers in ears. (A) A pair of staminate flowers each showing a lemma, a palea, and three … liteline slm4-40-whWebJun 1, 2002 · In maize, the indeterminate inflorescence meristem produces three types of determinate meristems: spikelet pair, spikelet and floral meristems. These meristems are … impfpass handy appWebJan 31, 2013 · In this review, we focus on the following issues concerning the fate of the reproductive meristems in two grass species, maize (Zea mays) and rice (Oryza sativa): (i) meristem regulation during inflorescence development; (ii) specification and fate change of the BM and the SM; (iii) determinacy of the FM; and (iv) communication between the ... litelines inc