@article{oai:nodai.repo.nii.ac.jp:00000219, author = {張, 文三 and 飯島 健太郎 and 近藤 三雄 and CHANG, Wensan and IIJIMA Kentaro and KONDO Mitsuo}, issue = {2}, month = {2016-04-20}, note = {日長時間の違いがビロードシバとコウライシバの生育に及ぼす影響について検討した。日長時間6,5,4,3,2,1,0時間の各実験区を設定し,約4ケ月間処理を行い,生育反応について探った。その結果,コウライシバでは,日長6時間区に比べて,5時間日長区以下では生育量が漸減し,4時間区では1/2程度に,3時間区や2時間区では葉の黄化現象や枯葉も認められるようになり,2時間区でも生育量は1/4程度となった。また1時間区では3.5ケ月後,0時間区では1.5ケ月後には枯死した。一方,ビロードシバでは,日長6,5,4時間区では生育量に大差がなく,3時間区で生育量が1/2以下となり,葉の黄化現象も認められ,2時間区では枯葉も見られるようになった。そして,1時間区では3ケ月後に3個体中2個体が枯死し,0時間区では3.5ケ月後にはすべて枯死した。つまり,ビロードシバの方がコウライシバに比べて,日長時間が短くなっても被害の発現やその後の進行度合も遅く,地下部も含めて生育量の低下や葉身の葉緑素含量(SPAD値)の低下もそれほど顕著でないことが解った。, In this research, whether or not Daylength exposure effected the growth and development of Zoysia tenuifolia and Zoysia matrella were investigated. Each Zoysia individual was planted in 1/5000a pot and exposed 0, 1, 2, 3, 4, 5 and 6hrs per day from August to December 2001. The color and chlorophyll of leaf in the experiment categories were measured by chrometer (CR-200b, Minolta Co.) and chlorophyllmeter (SPAD-502, Minolta Co.). The results are as follows : The growth ratio of the Zoysia matrella showed half and quarter in 4hrs and 2hrs treatments compared with 6hrs treatment, and the necrosis leaves and yellow colored leaves appeared in 3hrs and 2hrs treatments. And Zoysia matrella showed necrosis conditions in 1hr and 0hr treatments after 3.5 and 1.5months. Zoysia tenuifolia maintained the growing conditions under the 4, 5, 6hrs treatments. The growth ratio of 3hrs treatment showed fewer than half compared with 6hrs treatment, and the necrosis leaves were recognized in 3hrs treatment. Yellow leaves appeared in 2hrs treatment. 2 of 3 individuals of Zoysia tenuifolia exhibited necrosis conditions in the 1hr treatment after 3months. But in 0hr treatment, all individuals showed necrosis conditions after 3.5months. From those results, it is recognized that Zoysia tenuifolia showed injury and became damaged slower than Zoysia matrella, although Daylength Time is shortened. And it is recognized that the down ratio of the growth quantity including rhizosphere and SPAD of Lamina were not prominent., E, 4, KJ00004019096, 論文, Article}, pages = {64--70}, title = {日長時間の制約条件下におけるビロードシバとコウライシバの生育可能性}, volume = {49}, year = {}, yomi = {イイジマ, ケンタロウ and コンドウ, ミツオ} }