ISHS Acta Horticulturae 673: IX International Symposium on Flower Bulbs
THE DIFFERENTIATION AND THE DEVELOPMENT OF FLOWER BUDS DURING THE LIFE CYCLE OF PONERORCHIS GRAMINIFOLIA |
| Authors: | S. Hamatani, Y. Niimi |
| Keywords: | tuberous root, terrestrial orchid, wild plant, formation of inflorescence |
| Abstract:
We observed the differentiation and development of the flower buds of the Ponerorchis graminifolia Rchb. f., a terrestrial orchid with tuberous roots. We used the strain of Ponerorchis graminifolia that blooms in late May. The differentiation of the flower buds of Ponerorchis graminifolia began between September and December. First, the formation of inflorescences was observed. In some cases, differentiation of the flower buds started in the early period, and the existence of nodes on the inflorescences were confirmed between early to mid-October. The increase in the number of nodes stopped in January. The differentiation of florets and bracts began in each inflorescence node after April, and then the number of nodes increased once again. In the middle of May, the floret formed clinandrium | |
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