parthenocarpic Development of fruit without fertilization.
pathogen Any organism that causes disease. Generally applied to bacteria, viruses, fungi, nematodes, and parasitic plants.
pathology The study of diseases.
In the spring and summer, the females are parthenocarpic — that is, they reproduce without males; they give live birth to their young, and there can be multiple generations. The females can be either winged or wingless.
`Sweet Success' slicing cucumber and `County Fair 83' pickling cucumber are parthenocarpic varieties. They develop fruits without pollination. If pollinated, the fruit may be misshapen.
Other Types of Cukes
Photograph courtesy of Judy Sedbrook.
Although most hollies require both a male and female plant to attain the bright red berries, Nellie Stevens is an exception to this rule. The plant is called a parthenocarpic plant, and does not require a male cultivar to set fruit.
Celeste, Brown Turkey, Hardy Chicago, Brunswick, Marseilles, and Osborne are some of the most winter hardy cultivars which perform well in Maryland. All are seedless, producing their fruits parthenocarpically.