FLOWER DEVELOPMENT AND PRESERVATION OF ORNAMENTAL QUALITIES IN LILIES (LILIUM L.) OF ASIAN HYBRIDS
- The authors:
- Panfilova O. F., Pilshchikova N. V.
- Page numbers:
- 74 - 80
- programmed cell death, vase life, senescence, cut flower, ethylene
The paper presents some peculiarities of regulation and physiological senescence processes in lily petals (Lilium L.). The experiments were carried out on intact and cut flowers. It is shown that the loss of stability of membranes, indicating the beginning of senescence, occurs at the fourth stage of flower development, long before visible signs of ornamental qualities loss. Attention is paid to the physiological causes of ornamental qualities loss associated with hormonal regulation, carbohydrate content and water metabolism. In lilies, as well as in previously studied alstroemeria, ethylene is involved only in the final stages of petals drop. The trigger of senescence process in ethylene insensitive species can be a threshold effect of biochemical processes associated with the mobilization of nutrients.