Cytomixis in maize haploids
WebThe established method for maize DH production covered in this review involves in vivo induction of maternal haploids by a male haploid inducer genotype, identification of haploids from diploids at the seed or seedling stage, chromosome doubling of haploid (D 0) seedlings and finally, selfing of fertile D 0 plants. Development of haploid ... WebMar 10, 2013 · Interesting to note that pollen fertility enhanced by 15- to 20-folds in maize haploids with extensive cytomixis (Gayen and Sarkar 1996). Negrón-Ortiz suggested …
Cytomixis in maize haploids
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WebIn this chapter we describe cytological techniques to study cytomixis, a process of nuclear migration between plant cells, in squashed plant male meiocytes of Nicotiana tabacum … WebFour of them are utilized to produce maize haploids, the first of which involves obtaining haploids by tissue culture from megasporocytes and microsporocytes of maize (Barloy 1989; Petolino et al. 1992). Ao et al. culture the maize unpollinated ovaries on MS and N6 medium and obtain nearly 2% haploid plants (Ao et al. 1982).
WebMar 25, 2024 · Röber F K, Gordillo G A and Geiger H H. 2005. In vivo haploid induction in maize-performance of new inducers and significance of doubled haploid lines in hybrid breeding. Maydica 50: 275–83. Rotarenco V A, Dicu G, State D and FuiaS. 2010. New inducers of maternal haploids in maize. Maize Genetics Cooperation Newsletter 84: 1–7. WebCytomixis is migration of the nuclei from one plant cell to another through intercellular channels of a special type (cytomictic channels), differing from plasmodesmata in their …
WebAug 29, 2024 · 29 Aug 2024 by Datacenters.com Colocation. Ashburn, a city in Virginia’s Loudoun County about 34 miles from Washington D.C., is widely known as the Data … WebJul 19, 2014 · Abstract. Presently Mertensia echioides Benth. (Boraginaceae) collected from Kashmir Himalaya, India, is cytologically analyzed for the first time revealing (diploid). Interestingly we found 4.3–6.2% syncytic meiocytes/PMCs with (tetraploid) in addition to normal meiocytes during male meiosis.These comparatively larger PMCs (pollen mother …
WebA first method to produce doubled haploids in maize was proposed by Chase (1952) using monoploids or synonymously haploids. Haploids occur spontaneously at a rate of about 10-3 and about 10% of these yield successfully selfed progeny. Some genotypes showed a higher potential to induce haploids and selecting them seemed to be promising.
WebFeb 25, 2024 · February 25, 2024. Haploids — which are produced naturally in maize — were first identified in the crop about a century ago. Today they are used widely in different breeding programs, particularly in the development of doubled haploids, which are highly uniform, genetically pure and stable. Doubled-haploid technology has simplified ... solidworks cylinder cutWebThe migration of nuclei between plant cells (cytomixis) is a mysterious cellular phenomenon frequently observable in the male meiosis of higher plants. Cytomixis attracts attention because of unknown cellular mechanisms underlying migration of nuclei and its potential evolutionary significance, since the genetic material is transferred between ... solidworks datum featureWebCytomixis was extensively seen in maize haploids treated with colchicine. Genomic imbalance in the form of haploidy is probably responsible for the occurrence of cytomixis. … solidworks cylinder headWebOct 23, 2024 · Haploid inducer lines are routinely used in plant breeding for maize only, and thus represent an exception. Maize haploid inducer lines all derive from a particular genotype discovered in the 1950s that possesses the ability to induce the development of haploid embryos on a maize line of interest upon pollination with the inducer pollen. small appliances kitchenaidWebThe ideal gigas state was attained in the shoot apex of the tetraploid maize, but was modified in the mature leaf, and the authors developed the concept of the ideal giga state, based on the relation of chromosome numbers in the diploid and tetraPloid. Comparison was made of 10 monoploid and 10 diploid plants in each of 6 lines (3 inbred lines and 3 … small appliances for tiny homesWebOct 10, 2024 · We calculated the actual doubling rate (survival rate × double rate), 38.23%, 20.64%, and 19.4% are the highest actual doubling rates induced by APM, colchicine, and oryzalin, respectively.... small appliances kitchen edmontonWebThree approaches are generally used to develop DH lines: (1) microspore and anther culture, (2) wide hybridization between different species (such as the use of maize as a haploid inducer in wheat) to induce chromosome elimination, and (3) the use of particular inducer genotypes within species that facilitate the production of kernels with … solidworks decal