allotetraploid การใช้

• allotetraploid of this hybrid is " Ipomoea sloteri ".
• Poulard wheat is an example of a stable allotetraploid wheat.
• So two events are required to get an allotetraploid.
• This species is an allotetraploid of hybrid origin ( see Cystopteris hybrid complex ).
• The species has a chromosome number of 144 in the sporophyte, indicating an allotetraploid origin.
• When these diploid spores fertilized one another, they formed allotetraploid zygotes that grew into sporophytes.
• "Ipomoea ?multifida " is a allotetraploid of this hybrid is " Ipomoea sloteri ".
• This habitat is unfavorable to most other plants, but its allotetraploid descendants and their backcross hybrids may occur alongside it.
• The allotetraploid hybrid species derived from " A . montanum " can backcross with " A . montanum " to form triploid hybrids.
• A study completed in 1999 concluded that the fixed heterozygosity without segregation leads to the conclusion that " E . caninus " is allotetraploid by nature.
• "Polypodium sibiricum " is also now known to be one of the parents of the allotetraploid " Polypodium vulgare ", along with " Polypodium glycyrrhiza ".
• "Hibiscus acetosella " is an allotetraploid [ 2n = 4x = 72 ] with a genome composition of AABB . It is often used to transfer genetic resistance to root-knot nematodes with compatible Hibiscus species.
• "Elymus canadensis " is an allotetraploid, which mainly reproduces by self-pollination, but can cross-pollinate with several other strains of " Elymus " in order to provide more genetic variation.
• In 1991, it was resolved that the type of " P . virginianum " was the tetraploid series, and that it is an allotetraploid species of hybrid origin, with the diploid species as one parent.
• Unlike many other spleenworts, it is not particularly sensitive to soil pH . It hybridizes with several other spleenworts, particularly allotetraploid hybrids, and backcrosses to the parents are collectively known as the " Appalachian " Asplenium " complex ".
• The Appalachian hybrid complex in " Asplenium " is a polyploid complex composed of 3 diploid species, 3 allotetraploid species formed by hybridisation and chromosome doubling from the former, and assorted diploid, triploid and tetraploid hybrids between the 6 species.
• These include strains CBS 1513 ( formerly classified as " S . carlsbergensis " ) and CBS 1503 ( formerly classified as " S . monacensis " ) or type 2 : Frohberg type, allotetraploid strains that contain near complete sets of genomes from both parents.
• His further experiments, published the following year, strongly suggested that " A . pinnatifidum " is an allotetraploid, the product of hybridization between " A . montanum " and " A . rhizophyllum " to form a sterile diploid, followed by chromosome doubling that restored fertility.
• Durum wheat originated through intergeneric hybridization and polyploidization involving two diploid grass species : " T . urartu " ( 2n = 2x = 14, AA genome ) and a B-genome diploid related to " Aegilops speltoides " ( 2n = 2x = 14, SS genome ) and is thus an allotetraploid species.