. Crossed sweet corn. Sweet corn; Hybrid corn. 516 Connecticut Experiment Station Bulletin 361 Production of Crossed Seed in Field Plots General Method After the inbreds have been secured and by crossing them we have obtained the corn we desire, we are faced with the problem of producing crossed seed in quantity. The object is to get all of one specified inbred or variety pollinated by another given inbred. This is comparatively simple in corn, since the male and female inflorescences are on different parts of the plant. If the seed parent is planted in every other row and the pollen parent in
. Crossed sweet corn. Sweet corn; Hybrid corn. 516 Connecticut Experiment Station Bulletin 361 Production of Crossed Seed in Field Plots General Method After the inbreds have been secured and by crossing them we have obtained the corn we desire, we are faced with the problem of producing crossed seed in quantity. The object is to get all of one specified inbred or variety pollinated by another given inbred. This is comparatively simple in corn, since the male and female inflorescences are on different parts of the plant. If the seed parent is planted in every other row and the pollen parent in the alternate rows, we can obtain crossed seed by pulling out all of the tassels of one at pollinating time. The detasseled plants will then be pollinated by the other. For example, if we wish to make a cross of Spanish Gold x Connecticut 2 (a Whipple inbred) we would plant these two strains in alternate rows and then remove all the tassels from the Spanish Gold. All the seed produced on the Spanish Gold must then be crossed by Connecticut 2. The seed produced on the Connecticut 2 is selfed or sib-pollinated and represents an increased lot of this inbred. In this crossing plot the Spanish Gold is designated as the seed parent or female ( ? ), while the Connecticut 2 is the pollen parent or male { $).. Figure 109. Crossing plot showing alternate rows detasseled. Number of Rows of Seed Parent and Pollen Parent If we grow an equal number of rows of both the seed parent and the pollinator, a yield of crossed seed will be obtained from only one half of the acreage grown. Thus two acres in a crossing plot will give one acre of crossed seed and one of the pollinator. A low yield of crossed seed to the acre will be obtained. If we can increase the number of rows of the seed parent in comparison to the pollen parent greater yields of crossed seed can be produced. Care must be taken not to plant too many rows of the seed parent to one of the pollen parent: a poor pollination. Please not
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