To investigate the attributes of seed germination of the plants for greening of river bank slope, low-temperature treatment, chemical treatment, plant hormones treatment, and stratification were conducted using the seeds of 6 herbs growing naturally around river banks, such as Setaria glauca (L.) P....
To investigate the attributes of seed germination of the plants for greening of river bank slope, low-temperature treatment, chemical treatment, plant hormones treatment, and stratification were conducted using the seeds of 6 herbs growing naturally around river banks, such as Setaria glauca (L.) P. Beauv. Setaria faberii Herrm., Imperata cylindrica var. Koenigii, Miscanthus sinensis Anderss, Pennisetum alopecuroides (L.) Spreng, Lespedeza cuneata G. Don and so on and the seeds of 3 shrubs, such as Lespedeza bicolor Turcz., Rosa multiflora Thunb, Spiraea prunifolia for. simpliciflora Nakai, etc. The findings are as follows. In case of herbs, Setaria glauca (L.) P. Beauv. and Setaria faberii Herrm., the poaceae are stone seeds. In the treatment with H2SO4, they were germinated through dormancy breaking, even though there were some differences depending on immersion time, and the germination rate of Setaria faberii Herrm. was a bit higher than that of Setaria glauca (L.) P. Beauv.. The germination rate of Imperata cylindrica var. Koenigii was low in the treatment with GA3, NAA, the plant hormone, but the seed germination rate has improved and the germination rate of Miscanthus sinensis Anderss. and Pennisetum alopecuroides (L.) Spreng. showed the improved seed germination rate in low temperature treatment. In case of Lespedeza cuneata G.Don, and Lespedeza bicolor Turcz. the leguminous shrub, the woody plant, the treatment with H2SO4 was most effective for the improvement of seed germination and the decrease in germination time. Only Spiraea prunifolia for. simpliciflora Nakai, the rose among 3 woody plants showed the seed germination rate above 50% without any additional treatment. Thus, it was thought to be appropriate for greening. Rosa multiflora Thunb showed the attribute of germination in a dark condition at low temperature through stratification, despite its low germination rate. Based on the results as above, with respect to the greening using directly collected seeds, Miscanthus sinensis Anderss, Pennisetum alopecuroides (L.) Spreng and Spiraea prunifolia for. simpliciflora Nakai are suitable for greening, because they do not need any additional treatment and Lespedeza cuneata G.Don and Lespedeza bicolor Turcz. are also suitable for greening because it is possible to improve the germination rate and reduce the germination time through the treatment on the seeds before sowing.
To investigate the attributes of seed germination of the plants for greening of river bank slope, low-temperature treatment, chemical treatment, plant hormones treatment, and stratification were conducted using the seeds of 6 herbs growing naturally around river banks, such as Setaria glauca (L.) P. Beauv. Setaria faberii Herrm., Imperata cylindrica var. Koenigii, Miscanthus sinensis Anderss, Pennisetum alopecuroides (L.) Spreng, Lespedeza cuneata G. Don and so on and the seeds of 3 shrubs, such as Lespedeza bicolor Turcz., Rosa multiflora Thunb, Spiraea prunifolia for. simpliciflora Nakai, etc. The findings are as follows. In case of herbs, Setaria glauca (L.) P. Beauv. and Setaria faberii Herrm., the poaceae are stone seeds. In the treatment with H2SO4, they were germinated through dormancy breaking, even though there were some differences depending on immersion time, and the germination rate of Setaria faberii Herrm. was a bit higher than that of Setaria glauca (L.) P. Beauv.. The germination rate of Imperata cylindrica var. Koenigii was low in the treatment with GA3, NAA, the plant hormone, but the seed germination rate has improved and the germination rate of Miscanthus sinensis Anderss. and Pennisetum alopecuroides (L.) Spreng. showed the improved seed germination rate in low temperature treatment. In case of Lespedeza cuneata G.Don, and Lespedeza bicolor Turcz. the leguminous shrub, the woody plant, the treatment with H2SO4 was most effective for the improvement of seed germination and the decrease in germination time. Only Spiraea prunifolia for. simpliciflora Nakai, the rose among 3 woody plants showed the seed germination rate above 50% without any additional treatment. Thus, it was thought to be appropriate for greening. Rosa multiflora Thunb showed the attribute of germination in a dark condition at low temperature through stratification, despite its low germination rate. Based on the results as above, with respect to the greening using directly collected seeds, Miscanthus sinensis Anderss, Pennisetum alopecuroides (L.) Spreng and Spiraea prunifolia for. simpliciflora Nakai are suitable for greening, because they do not need any additional treatment and Lespedeza cuneata G.Don and Lespedeza bicolor Turcz. are also suitable for greening because it is possible to improve the germination rate and reduce the germination time through the treatment on the seeds before sowing.
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