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F1 hybrid (also known as filial 1 hybrid) is the first filial generation of offspring of distinctly different parental types. [1] F1 hybrids are used in genetics, and in selective breeding, where the term F1 crossbreed may be used. The term is sometimes written with a subscript, as F 1 hybrid. [2] [3] Subsequent generations are called F 2, F 3 ...
Open-pollinated varieties are also often referred to as standard varieties or, when the seeds have been saved across generations or across several decades, heirloom varieties. [2] While heirlooms are usually open-pollinated, open-pollinated seeds are not necessarily heirlooms; open-pollinated varieties are still being developed.
Hybrid seed is common in industrial agriculture and home gardening. It is one of the main contributors to the dramatic rise in agricultural output during the last half of the 20th century. [ 1 ] Alternatives to hybridization include open pollination and clonal propagation.
The Early Girl tomato is a medium-sized globe-type F1 hybrid popular with home gardeners because of its early ripening fruit. Early Girl is a cultivar of tomato with indeterminate growth, which means it produces flowers and fruit until it is killed by frost or another external factor (contrast with a determinate cultivar, which would grow to a limited, predefined shape and be most productive ...
True Gold, 80+ days (open pollinated selection from Golden Jubilee Hybrid) [4] Golden Cross Bantam, 85 days (Introduced in 1933, this became the first widely grown hybrid sweet corn for both home gardens and commercial growers) [5]
Seed from selected half-sibs, which have been pollinated by random pollen from the population (meaning that only the female parent is known and selected, hence the term "half-sib") is grown in unreplicated progeny rows for the purpose of selection.
Time course imaging of two maize inbreds and their F1 hybrid (middle) exhibiting heterosis. Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of its parents
A mule is a sterile hybrid of a male donkey and a female horse.Mules are smaller than horses but stronger than donkeys, making them useful as pack animals.. In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction.
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