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Alternatives to hybridization include open pollination and clonal propagation. [ 2 ] An important factor is the heterosis that results from the genetic differences between the parents, which can produce higher yield and faster growth rate.
Hybrid vigor is expressed during the plant's early vegetative and reproductive growth stages. Young hybrid seedlings have faster root and leaf development and better canopy development; the mature plant has increased total dry matter, larger panicles (the terminal shoots that produce grain), more spikelets (units of flower) per unit area, increased total weight of grains, and, consequently ...
An ornamental lily hybrid known as Lilium 'Citronella' [1] This is a list of plant hybrids created intentionally or by chance and exploited commercially in agriculture or horticulture. The hybridization event mechanism is documented where known, along with the authorities who described it.
Hybridization sometimes results in introgression, which can occur in response to habitat disturbance that puts plant species into contact with each other. [2] Introgression is gene transfer among taxa and is a result of hybridization, followed by repeated backcrossing with parental individuals.
Introgressive hybridization, also known as introgression, is the flow of genetic material between divergent lineages via repeated backcrossing. In plants, this backcrossing occurs when an F 1 {\displaystyle F_{1}} generation hybrid breeds with one or both of its parental species.
Hybrid zones can form from secondary contact. A hybrid zone exists where the ranges of two interbreeding species or diverged intraspecific lineages meet and cross-fertilize. . Hybrid zones can form in situ due to the evolution of a new lineage [1] [page needed] but generally they result from secondary contact of the parental forms after a period of geographic isolation, which allowed their ...
A recent study shows that without plant breeding, Europe would have produced 20% fewer arable crops over the last 20 years, consuming an additional 21.6 million hectares (53 million acres) of land and emitting 4 billion tonnes (3.9 × 10 9 long tons; 4.4 × 10 9 short tons) of carbon.
Hybridization without change in chromosome number is called homoploid hybrid speciation. [1] This is the situation found in most animal hybrids. For a hybrid to be viable, the chromosomes of the two organisms will have to be very similar, i.e., the parent species must be closely related, or else the difference in chromosome arrangement will ...