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In an effort to reduce chemical usage to prolong postharvest keeping time of cut flowers, a cross was made between a long-lived (vase life, 10.9 days) inbred line of  Antirrhinum majus  and a short-lived (vase life, 5.0 days) inbred line. The F 1  hybrid was backcrossed to the short-lived parent. Sixty plants of the BC 1  generation were carried on through three generations of selfing by single-seed descent. Eight replications each of 60 BC 1 S 3  families, the parents, and the F 1  hybrid were grown in the greenhouse, harvested with 40-cm stems when five florets opened, and placed in distilled water for vase life evaluation. Stems were discarded when 50% of the florets on a spike wilted, browned, or dried. Three families proved not significantly different from the long-lived inbred parent. Results indicate that inbred backcross breeding shows potential to increase the postharvest keeping time of short-lived  Antirrhinum majus  inbred lines.

hortscience

Transfer of the Long-lived Postharvest Keeping Characteristic from a long-lived Inbred line of Antirrhinum majus (L.) to a Short-lived Line through the Inbred Backcross Method