Open-pollinated population

A similar story can be told regarding com kernel protein content. Hybrid corn typically contains 8-11 percent protein, but considerable genetic variability for this trait exists in open-pollinated populations. In an experiment involving serial selection for both high and low protein content, mean protein content has been shifted more than 139 percent from the starting point mean value (a range of at least 20 standard deviations).105-107 At generation... 

Rapeseed and double-low rapeseed (canola) cultivars in Canada have traditionally been open-pollinated population cultivars in both B. nap us and B. rapa. More recently, hybrid 5. napus double-low rapeseed (canola) cultivars have been developed and released in Canada. Most of these hybrids are also herbicide tolerant. Nearly 50% of double-low rapeseed (canola) production in Canada in 2005 was of hybrid B. napus types (Brandt and Clayton 2005). This proportion increases annually. 

Knapp, S.J., Crane, J.M., 1997. The develt ment of self-pollinated inbred lines of meadowfoam by direct selection in open-pollinated populations. Crt Sd. 37,1770-1775. 

Open pollination pollen is delivered to another plant from a genetically related population. The seeds of open-pollinated plants will grow into plants that are similar to the parents. This is in contrast with hybrid plants. Seed from hybrids segregate for various traits and are not identical to the hybrid parent. 

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