ISHS Acta Horticulturae 771: XXVII International Horticultural Congress - IHC2006: International Symposium on Seed Enhancement and Seedling Production Technology
COMPARISON BETWEEN TWO METHODS OF RAISING DAUGHTER PLANTS ON INITIAL GROWTH AND PHOTOSYNTHETIC RATE IN STRAWBERRY |
| Authors: | K. Yamazaki, H. Hamamoto, T. Ikeda |
| Keywords: | amount of roots, cutting, forcing culture, Fragaria × ananassa, runner plants |
| Abstract:
Strawberry growers in Japan raise daughter plants by two main methods: daughter plants are either rooted in plastic pots for a few weeks while still connected to the mother plant (runner plants: RPs) or cut off from the mother plant and potted separately (cutting plants: CPs). Although these two methods should have different effects on daughter plants, the physiological and agronomic differences between daughter plants are unknown. Potential daughter plants of ‘Sachinoka’ with the same number of leaves were selected and raised using both propagation methods simultaneously. Initial growth and the photosynthetic rate of leaves were measured from a few days after the start of experiment. Daughter plants began to produce roots from 1 d after the start of the experiment in both methods, but RP had more roots than CP. This tendency continued for about 2 weeks in spite of the absence of significant differences in the number of leaves, crown diameter, and leaf shape. The photosynthetic rate of the leaves increased immediately after the start of the experiment in RP, but decreased in CP. However, the rates were about the same from 7 d after the start of the experiment. Thus, these two methods exhibited differences in the amount of roots and in photosynthetic rate during the initial 7 d. | |
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