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題 名 | No Clinal Variation in Cunninghamia Lanceolata Wood Density Sampled from Thirteen Chinese Provinces=源自中國十三省之杉木木材密度無連續性變異 |
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作 者 | 楊政川; 邱志明; 林讚標; 孔繁浩; | 書刊名 | 臺灣林業科學 |
卷 期 | 16:2 2001.06[民90.06] |
頁 次 | 頁65-79 |
分類號 | 436.185 |
關鍵詞 | 種源測驗; 地理變異; 同功酶; 木材性質; Provenance test; Geographic variation; Isozyme; Wood property; |
語 文 | 英文(English) |
中文摘要 | 杉子種子來自中國13省區之42個種源。樹高與胸徑生長資料分別於11,16及18 年生時測定而得。生長木軸取自胸高部位,並應用排水法以測析木材密度。另以電泳技術測 得PGI、SKDH及6PGD等同功?之頻率。木材密度最大值為0.310,來自江蘇省,而最小值 為0.273,來自中國西南的貴州省。這兩個省區之密度值分別與其相鄰省區者比較,均有差異。 木材密度值與SKDH及6PGD二同功?頻率並無之相關性存在,但與PGI同功?卻顯出微弱 之相關關係。由於無法測得直線型地理或氣候趨向之變異,我們認為杉木之木材密度係因地 域局部因素而致呈現逢機型變異。 |
英文摘要 | Seeds of China-fir were obtained from 42 provenances in 13 provinces of China. Height and diameter were measured at the ages of 11, 16, and 18 years. Wood density samples were taken by increment core at breast height and were assessed by the water displacement method. Isozyme frequencies of PGI, SKDH, and 6PGD were observed from electrophoresis. Wood density ranged from a high of 0.310 in Jiangsu Province to a low of 0.273 in Guizhou Province in southwestern China. The China-fir in these 2 provinces differed from those of their neighboring Provinces. Correlation between density and isozyme frequency was not significant for SKDH and 6PGD; it was weak for PGI. Since there were no linear geographic or climatic trends detected, random variation due to local factors appears to be a suitable description for wood density in China-fir. |
本系統中英文摘要資訊取自各篇刊載內容。