Cytomixis in maize haploids

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August undefined, 2024

WebAbstract — Cytomixis has been described in many plant species, but not in Salvia miltiorrhiza Bunge, a well-known Chinese herb. The present study reports spontaneous … WebOct 15, 2024 · Several hypotheses on the possible mechanisms of haploid maize development via pollination with haploinductors have been proposed. Some researchers believe this phenomenon to be connected with sperm cell function disorders, such as incapacity to movement or convergence and fusion with ovule [ 10 ].

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WebThree 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 … 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 … marion county license branch

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WebJul 18, 2024 · Haploids are used to develop doubled haploids (DHs), which have many potential uses. The development of DH lines in maize … Webstudied and improved. For maize (Zea mays L.) the most used induction technique is in vivo induction of maternal haploids. This technique is based on the use of special genotypes … WebJan 3, 2024 · In maize breeding, several Haploid strategies for producing haploid and doubling haploids have been identified. Two gene sets are produced when haploid (n) cells undergo artificial or spontaneous chromosomal doubling so that are perfectly identical are resulting in a Doubled Haploid (DH) genotype [11]. marion county library indiana

Cytomixis - Wikipedia

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 … WebThe 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 … naturopathe connueWebThe 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 ... naturopathe compiègne

"WebGenetic control of maternal haploidy in maize (Zea mays L.) and selection of haploid inducing lines Authors P Lashermes 1 , M Beckert Affiliation 1 Station d'amélioration des plantes, Domaine de Crouelle, INRA, F-63039, Clermont-Ferrand Cedex, France. PMID: 24232205 DOI: 10.1007/BF00265341 " - Cytomixis in maize haploids

Cytomixis in maize haploids

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WebMaize doubled haploid (DH) technology provides fixed, pure lines from a donor parent. Protocols for breeding of DH lines are available for over 250 crop species, and over 300 DH-derived cultivars have been developed in 12 species worldwide (Forster and Thomas, 2005). 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 …

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WebHaploid induction and chromosome doubling of induced haploids are the two main steps of doubled haploid creation. Both steps have their own complexities. Chromosome doubling of induced haploids may happen spontaneously, although usually at a low rate. WebHHMI’s Janelia Research Campus in Ashburn, Virginia, cracks open scientific fields by breaking through technical and intellectual barriers. Our integrated teams of lab scientists and tool-builders pursue a small …

WebA vast neural tracing effort by a team of Janelia scientists has upped the number of fully-traced neurons in the mouse brain by a factor of 10. Researchers can now download … WebThe 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 ...

http://agronomyjournal.usamv.ro/pdf/vol.LVI/Art57.pdf 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 …

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.

WebTwo haploid-inducing lines, MHI and M741H, were used for the production of maternal haploids. Haploids were obtained from all maternal genotypes involved in the experiment, including dent, flint and flintxdent maize. The maternal genotype had a significant influence on the frequency of haploids obtained. The frequency ranged from 2.7% to 8.0%. marion county license officeWebcytomixis in maize haploids p. gayen, k. r. sarkar 79-85 view abstract pdf download pdf genetic divergence among chickpea cultivars k. m. samal, p. n. jagaoev 86-88 view abstract pdf download pdf genetics of yield and yield components over locations in desi cotton (gossypium arboreum) ... naturopathe controversehttp://agronomyjournal.usamv.ro/pdf/vol.LVI/Art57.pdf marion county licensing shelter buddyWebMar 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. naturopathe cnrWebinant way in maize (Chang and Coe, 2009; Geiger, 2009). This method was ﬁrst reported in 1959 with the discovery of maize haploid inducer Stock 6, producing 2%–3% maternal haploids when outcrossed as a male. Over the years, haploid induction rates (HIR) increased to 8%–10% due to development of high marion county light showWebOct 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. naturopathe coutancesWebidentify haploids by flow cytometry and to correlate the nuclear DNA content to the morphological and morphometric traits of the seeds that gave rise to them. In addition, … marion county licensing department