Influence of temperature levels and planting time on the sprouting of rhizome-bud and biomass production of torpedograss (Panicum repens L.) in Okinawa island, southern Japan
Influence of temperature levels and planting time on the sprouting of rhizome-bud and biomass production of torpedograss (Panicum repens L.) in Okinawa island, southern Japan
复制标题
温度水平和种植时间对日本南部冲绳岛鱼雷草 (Panicum repens L.) 根茎芽萌发和生物量生产的影响
DOI：
10.1046/j.1445-6664.2001.00028.x
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发表时间：
2001
影响因子：
1.4
通讯作者：
H. Kuramochi
中科院分区：
文献类型：
--
作者：
M. A. Hossain;H. Akamine;I. Nakamura;Y. Ishimine;H. Kuramochi
本研究描述了日本冲绳县温度水平和种植时间对根茎芽萌发和鱼雷草（Panicum repens L.）生物量产生的影响。每个月（1994-95 年）种植的鱼雷草生长了 210 天。在培养箱中20-35℃温度范围内，鱼雷草根茎芽的发芽率为92-96%，在≤5℃和≥45℃的极低和高温下均未观察到发芽。当环境温度在 17-29°C 范围内全年盆栽时，该植物的出苗率为 40-72%。 3-9月出苗率较高，4-10月温度在22-29℃期间，芽伸长较快。与7月至12月播种的鱼雷草相比，1月至6月播种的鱼雷草获得了显着更高的生物量，因为接下来的5月至10月的生长期温度较高。在中等生长阶段（种植后 70-110 天 (DAP)）和快速生长阶段（到最后一次收获时为 110 DAP），植物需要较高的温度才能正常生长和发育。
The present study describes the influence of temperature levels and planting time on the sprouting of rhizome-buds and the biomass production of torpedograss (Panicum repens L.) in the Okinawa prefecture, Japan. Torpedograss planted in each month (1994–95) was grown for 210 days. Sprouting of the rhizome-bud of torpedograss was 92–96% at the temperature range of 20–35°C in an incubator, and the sprouting was not observed at the extreme low and high temperature of ≤5 and ≥45°C, respectively. The plant showed 40–72% emergence when grown in pots throughout the year in the ambient temperature range of 17–29°C. The percentage emergence was comparatively higher in March to September, and shoots elongated rapidly in the period from April to October when the temperature range of 22–29°C prevailed. Torpedograss-rhizome sown in the period from January to June obtained significantly higher biomass because higher temperatures prevailed in the following growth period from May to October, as compared with the torpedograss-rhizome sown in the period of July to December. The plant required higher temperatures for proper growth and development during the period of moderate (70–110 days after planting (DAP)) and fast growth phases (110 DAP to the last harvest).