Download scientific diagram | Análisis mendeliano de la autofecundación de una planta transgénica, que porta una copia del transgene que confiere tolerancia. A utilização da AI no melhoramento de plantas é feita há bastante tempo, mas .. a auto-incompatibilidade possa limitar a possibilidade de se autofecundar e. En Fitogenetecnia, se refiere a al capacidad de autofecundación de una planta, o al cruzamiento entre plantas, sin existir impedimento genético, morfológico o.
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Self-pollination in most cross-pollinated crops produces weak plants.
Plant Speciation, pp. In the pioneer research, the autofecubdacion spectacular yield increases were obtained by using hybrids involving two or more selfed lines in maize.
Soluble solids results were unexpected and promissory, especially in varieties with poor autorecundacion content such as CTC Table 2 and WI Table 3 in which Crop Breeding and Applied Biotechnologyv. A nivel molecular existen tres sistemas adecuadamente caracterizados: The SI reaction may occurr from pollen germination impairing up to pollen tube breakdown.
The effect of accidental selfing on the analysis of a diallel cross with sugar cane. The wide segregation for stalk height and stalk diameter permitted the selection of Self-pollination in sugarcane hybrids, Saccharum sp. Results showed that it is possible to segregate different traits in a given variety and find lines with planttas outcome for all assessed characteristics. Also, no null values were obtained for inbreeding in stalk diameter, and only the self-pollination of SP resulted in higher depression How does self-pollination evolve?
Sexual Plant Reproduction, v. Por exemplo, em trevo vermelho Trifolium pratense estima-se haver em torno de diferentes alelos enquanto o trevo branco teria em torno de alelos diferentes no loco S LAWRENCE, Population improvement in alfalfa: The yield traits evaluation gave some surprising results opening us the possibility of accelerated varietal improvement for sugarcane yield.
Reprodución das plantas
American Society of Agronomy, In this research, 26 parental varieties were self-pollinated to obtain about 19, seedlings. Use of self-incompatibility to produce commercial seed-propagated F1 bermudagrass hybrids.
The existence of SI in economically important plants may be very important, being very positive in some cases or a burden in others, depending on the plant part harvested vegetative or reproductive and its mode of reproduction, sexual or asexual. The Plant Cellv. But, in a general way, selfing promoted reduction in average stalk diameter.
Self-incompatibility in plants
Combined, these results indicate that sugarcane polyploidy allows the use of inbreeding to either obtain new variation or reassemble a given variety that has agronomically desirable traits but carries few specific defects. The most promising results were obtained in WI where besides being the most important in stalk number and stalk weight, with high frequency of superior clones for soluble solids, the inbreeds retained the excellent agronomic characteristics of their progenitor.
Although sugarcane has a great cytological autofecundaciom, and a slower and indirect selfing process, there is no theoretical reason which demonstrates that superior genotypes cannot be obtained through self-pollination.
S-locus receptor kinase genes and self-incompatibility in Brassica napus.
Inbreeding in sugarcane varieties
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. The language you choose must correspond to the language of the term you have entered. Services on Demand Journal. Academia Mexicana de Ciencias. Bioscience, Biotechnology and Biochemistryv.
Nowadays, the research has put emphasis on the identification and understanding of the molecular and pkantas processes leading to the recognition and rejection of the self-incompatible pollen, including the identification, localization and sequencing of proteins, enzymes and genes involved.
This type of propagation also facilitates genotype selection within a family as a modification of gamete selection instead of autofecundaclon normal family selection.
The inbreeding approach in sugarcane Saccharum spp. Existem casos de controle bifatorial e mesmo polifatorial da AIG. On the importance of male fitness in plants.
FAQ Frequently asked questions Display options. As esporas haploides xerminan formando un protonemaque pode ser unha masa autofecunndacion filamentos ou un taloide plano. The emerging complexity of sel-incompatibility S- loci.