Haploid
Mostrando 1-12 de 1308 artigos, teses e dissertações.
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1. [PROVISIONAL] Heterochromatin and numeric chromosome evolution in Bignoniaceae, with emphasis on the Neotropical clade Tabebuia alliance
Abstract Bignoniaceae is a diverse family composed of 840 species with Pantropical distribution. The chromosome number 2n = 40 is predominant in most species of the family, with n = 20 formerly being considered the haploid base number. We discuss here the haploid base number of Bignoniaceae and examine heterochromatin distributions revealed by CMA/DAPI fluor
Genet. Mol. Biol.. Publicado em: 19/08/2019
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2. Haploid identification using tropicalized haploid inducer progenies in maize
Abstract The aim of this study was to identify maize haploid plants and compare the efficiency of identification of maize haploid plants using the R1-nj morphological marker, plant vigor, flow cytometry, chromosome counting, and microsatellite molecular markers under tropical conditions. We also established a protocol for chromosome duplication in maize hapl
Crop Breed. Appl. Biotechnol.. Publicado em: 2018-03
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3. Análisis del cariotipo del híbrido natural Aloe x spinosissima y de sus parentales Aloe arborescens y Aloe humilis, mediante bandeo cromosómico C, CMA y DAPI
Abstract The karyotype of three species of Aloe was studied with C-Giemsa, CMA (Chromomycin A3) and DAPI (4'-6-diamino-2.fenildol) chromosome banding in order to make contributions in their cariomorfometría, location, size studied bands, and discuss cytogenetic evidence of hybrid origin reported in A. x spinossisima. The entities studied have a 2n = 2x = 14
Rodriguésia. Publicado em: 2017-09
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4. BRS 331 - Early cycle double-haploid wheat cultivar
Abstract The wheat cultivar ‘BRS 331’ was developed by Embrapa. It results from an interspecific cross between wheat and maize by double-hapolid method. ‘BRS 331’ shows solid stem in the base of the plant, short leaves and super-early cycle to maturity. It is classified as bread wheat in all of the regions that is recommended in the States of Rio Gra
Crop Breed. Appl. Biotechnol.. Publicado em: 2017-03
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5. Selection of aggressive pathogenic and solopathogenic strains of Ustilago maydis to improve Huitlacoche production
ABSTRACT Ustilago maydis is a basidiomycete known as the causative agent of 'common smut', worldwide disease of maize that is recognized by the galls it forms, which have considerable potential as a gourmet food. Results of infection are quite variable, even under optimal greenhouse conditions. In order to find pathogenic strains able to be used as a highly
Acta Bot. Bras.. Publicado em: 2016-12
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6. Construction and characterization of a bacterial artificial chromosome library of the maize inbred line Qi319
Abstract Zea mays L. has been the most cultivated crop and the crop with the largest yield in China since 2012. We constructed a bacterial artificial chromosome (BAC) library for the maize inbred line Qi319, which may be used as a key source for disease-resistant maize breeding in China. The BAC contains 270,720 clones, with an average insert size of 90 kb.
Crop Breed. Appl. Biotechnol.. Publicado em: 2016-03
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7. Comparative karyotype analysis of populations in the Alstroemeria presliana Herbert (Alstroemeriaceae) complex in Chile
Alstroemeria L., one of the most diverse genera of the Chilean flora and of high floricultural value, is represented by 35 species, most of them distributed between 28–38° S in the Mediterranean zone of Central Chile. There are 24 complex-forming taxa, of which 18 have conservation problems (8 are considered “endangered” and 10 as “vulnerable”). O
Genet. Mol. Biol.. Publicado em: 2015-06
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8. Detection of self-incompatible oilseed rape plants (Brassica napus L.) based on molecular markers for identification of the class I S haplotype
The selection of desirable genotypes with recessive characteristics, such as self-incompatible plants, is often difficult or even impossible and represents a crucial barrier in accelerating the breeding process. Molecular approaches and selection based on molecular markers can allow breeders to overcome this limitation. The use of self-incompatibility is an
Genet. Mol. Biol.. Publicado em: 2014-09
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9. BRS 328 - Double haploid bread wheat cultivar
The wheat cultivar 'BRS 328' was developed by Embrapa from a cross between KleinH3394 and PF 990744. The pre-harvest sprouting resistance of 'BRS 328' is good and the grain yield high. It is classified as bread wheat cultivar in all regions where it is recommended for cultivation.
Crop Breed. Appl. Biotechnol.. Publicado em: 2014-03
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10. Ploidy levels in Citrus clementine affects leaf morphology, stomatal density and water content
The objective of the present study was to understand the relationship among leaf morphology, stomatal characteristics and water relations in triploids generated through anther culture and their counterpart diploid plant of C. clementina. Triploid plants possessed small and narrow leaves as compared to diploid plant as evident by less leaf length, leaf width
Theor. Exp. Plant Physiol.. Publicado em: 2013-12
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11. Epistasis interaction of QTL effects as a genetic parameter influencing estimation of the genetic additive effect
Epistasis, an additive-by-additive interaction between quantitative trait loci, has been defined as a deviation from the sum of independent effects of individual genes. Epistasis between QTLs assayed in populations segregating for an entire genome has been found at a frequency close to that expected by chance alone. Recently, epistatic effects have been cons
Genet. Mol. Biol.. Publicado em: 2013
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12. Biotechnological approaches to the treatment of aspermatogenic men
Aspermatogenesis is a severe impairment of spermatogenesis in which germ cells are completely lacking or present in an immature form, which results in sterility in approximately 25% of patients. Because assisted reproduction techniques require mature germ cells, biotechnology is a valuable tool for rescuing fertility while maintaining biological fatherhood.
Clinics. Publicado em: 2013