Triploid block is a phenomenon describing the formation of nonviable progeny after hybridization of flowering plants that differ in ploidy. The barrier...

either triploid (n + 2n = 3n) or tetraploid (2n + 2n = 4n) offspring. Triploid offspring are typically sterile (as in the phenomenon of triploid block), but...

has been suggested that these imprinted genes are responsible for the triploid block effect in flowering plants that prevents hybridization between diploids...

abortion. This reproductive bottle neck leads to a phenomenon called triploid block. In agriculture, development of new plant cultivars, utilizing interploidy...

and the sperm that is present typiclaly has less motility than normal. Triploid fish can sire offpring, but said offspring have low hatch rates and high...

the haploid male gamete combines with two haploid polar nuclei to form a triploid primary endosperm nucleus by the process of vegetative fertilisation. In...

of annual triploid plants not readily propagated vegetatively cannot produce a second-generation crop from the seeds (if any) of the triploid crop and...

as the diploid tree onion or Egyptian onion (A. ×proliferum), and the triploid onion (A. ×cornutum). The tree onion or Egyptian onion produces bulblets...

daylilies were diploid. Tetraploid cultivars have 44 chromosomes, while triploids have 33 chromosomes and diploids have 22 chromosomes per individual plant...

basal shoot that grows after the original plant has been cut down. Being triploid, the fruit contains no seeds, and the male flower does not produce pollen...

tetraploid species and examined how the chromosomes paired in the resulting triploids. The six species are The code in the "Chr.count" column specifies the...

ser. Hypericum. The hybrids that are descended from H. perforatum can be triploid (3 sets of chromosomes) to hexaploid (6 sets), depending on the chromosome...

saffron, including Iran, Greece, Mesopotamia. and Kashmir. It is a sterile triploid form, which means that three homologous sets of chromosomes make up each...

with both central cell nuclei, producing a triploid (3n) cell. The zygote develops into an embryo; the triploid cell develops into the endosperm, the embryo's...

chromosomes). Hybrids between the two are known, but are very rare, and being triploid, are sterile. The two have differences in habitat requirements, with silver...

1786. Apples are diploid, with two sets of chromosomes per cell (though triploid cultivars, with three sets, are not uncommon), have 17 chromosomes and...

zygote. To prevent polyspermy and minimize the possibility of producing a triploid zygote, several changes to the egg's cell membranes render them impenetrable...

between two species and is diploid but not hermaphroditic. It can have triploid and tetraploid forms, including all-female forms that reproduce mainly...

transporters (PIN proteins). The evolutionary transition from diploid to triploid endosperms - and the production of antipodal cells - may have occurred...

1073/pnas.172391499. PMC 137510. PMID 12407174. "Aquatic Plant Management – Triploid Grass Carp". Washington State Department of Ecology. Retrieved 18 December...

inadvertently breeding with wild salmon, all the fish raised for food are females, triploid, 99% are reproductively sterile, and raised in areas where escaped salmon...

sexually (asexual or sterile). Protoplasts of sexually sterile (haploid, triploid, and aneuploid) plants can be fused to produce fertile diploids and polyploids...

are diploid and may even constitute another species. Moreover, several triploid trees known only in cultivation, such as 'Jefferson', are possessed of...

cyanotic congenital heart defect Timothy syndrome Townes–Brocks syndrome Triploid syndrome Turner syndrome VACTERL syndrome Wellens' syndrome Williams syndrome...

virus was most virulent. Later, approval was given to farm (infertile) triploid Pacific Oysters, which are not susceptible to QX disease, in the Georges...

from a suitable pollenizer. A relatively small number of cultivars are "triploid", meaning that they provide almost no viable pollen for themselves or other...

offspring of, for example, tetraploid x diploid matings often result in triploid sterile progeny. Not all polyploids are reproductively isolated from their...

because the only commercially available genotype Miscanthus × giganteus is a triploid hybrid that does not produce viable seeds. Consequently, costly establishment...

  (angiosperms) A nutritive tissue surrounding the embryo of the seed, usually triploid, originating from the fusion of both polar nuclei with one gamete after...