Articles
Effects of seed tuber weight and intrarow spacing on the development of shoots and new tubers in Chinese yam (Dioscorea oppositifolia ‘Tsukuneimo’)
Article number
1118_11
Pages
73 – 78
Language
English
Abstract
The effects of seed tuber weight (STW) and intrarow spacing on the development of shoots and new tubers in Chinese yam (Dioscorea oppositifolia ‘Tsukuneimo’) were investigated in order to develop a novel practical and sustainable seed tuber propagation method using tuber divisions.
Results from the potted experiment for the effect of STW on the shoots and new tuber growth showed that plants with an STW of 15 g produced the greatest shoot growth and fresh weight of new tubers, followed by 10 g and 5 g STW plants.
However, the ratios of new tuber weight to leaf weight and new tuber weight to STW were higher in 5 g STW plants than in either 15 g or 10 g STW plants.
Results from the field experiment for the effects of STW and intrarow spacing (inter-row space of 30 cm) on the new tuber growth showed that for the same intrarow spacing, 15 g STW plants produced the greatest fresh weight of new tubers, followed by 10 g and 5 g STW plants.
For plants with the same STW, except for 10 g STW plants, the fresh weight of new tubers increased with increasing intrarow spacing (10, 15, and 20 cm). The effect of intrarow spacing was the highest in 15 g STW plants.
Results from the potted experiment for the effect of STW on the shoots and new tuber growth showed that plants with an STW of 15 g produced the greatest shoot growth and fresh weight of new tubers, followed by 10 g and 5 g STW plants.
However, the ratios of new tuber weight to leaf weight and new tuber weight to STW were higher in 5 g STW plants than in either 15 g or 10 g STW plants.
Results from the field experiment for the effects of STW and intrarow spacing (inter-row space of 30 cm) on the new tuber growth showed that for the same intrarow spacing, 15 g STW plants produced the greatest fresh weight of new tubers, followed by 10 g and 5 g STW plants.
For plants with the same STW, except for 10 g STW plants, the fresh weight of new tubers increased with increasing intrarow spacing (10, 15, and 20 cm). The effect of intrarow spacing was the highest in 15 g STW plants.
Authors
Y. Yoshida, S. Kikuchi, H. Kanda, H. Takahashi, K. Hosogoe, R. Kagaya, E. Togashi, T. Takahashi, K. Kanahama
Keywords
intrarow spacing, new tuber production, new tuber weight to seed tuber weight ratio, propagation rate, seed tuber division
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