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題 名 | 木荷不同家系22年生後裔之生長變異及遺傳性研究 |
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作 者 | 施慶芳; | 書刊名 | 國立臺灣大學農學院研究報告 |
卷 期 | 33:3 1993.09[民82.09] |
頁 次 | 頁197-213 |
分類號 | 436.251 |
關鍵詞 | 木荷; 生長; 後裔; 遺傳性; 變方分析; 遺傳率; 相關係數; 迴歸係數; 單親後裔試驗; Schima superba; Analysis of variance; Heritability; Correlation coefficient; Regression coefficient; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究材料之母樹分別選自南投縣日月潭、翠峰、溪頭、新竹縣觀霧、 台東縣大武五區域,共12株母樹。苗木培育於南投縣竹山鎮台大實驗林下坪苗 圃,於民國59年8月栽植於本試驗地(清水溝茶園,海拔600公尺)。民國81年4月調 查林木22年生樹高,胸圍,枝下高及分幹數四形質,加以統計分析並與其2年生, 11年生時之資料對照研究其壯幼相關性。茲將結果摘述如下:1.依據變方分析,22 年生木荷之樹高及胸圍生長,各家系間呈現顯著(5水平)及極顯著(1水平)之差 異。就此兩經濟形質言,以來自日月潭(s-31),日月潭(S-32),翠峰(s-7),及大武 (s-12),表現較佳,而翠峰(s-21)、(s-6)則為殿後。不同家系間之枝下高及分幹數 則不呈顯著之差異。2.22年生木荷四形質之推定遺傳率為樹高:0.624胸圍:0.695枝 下高:0分幹數:0。3.2生木荷之樹高與11、22年生之樹高有極顯著及顯著之相關, 其相關係數分別為0.8194及 0.66587。而11年生樹高與22年生樹高則有顯著之相 關,其相關係數為0.61791。4.2年生木荷之樹高與11-22年生者之胸徑、胸圍亦有 極顯著及顯著之相關,共相關係數分別為0.88005及0.61213。而11年生胸徑與22 年生胸圍則有顯著之相關,相關係數為0.69962。 |
英文摘要 | The seeds of Schima superba Gardn. et Champ were collectedfrom 12 monther trees in Autumn of 1969 from different regions ofTaiwan and sowed on the shiaping nursery of National TaiwanUniversity (N.T.U. ) Forest in the pring of 1970. The height growth,circumference growth at breast height ( C.B.H. ) , clean bole lengthand main branch number of trees were measured in spring of 1992.Following results were obtained from statistical analysis.1. Differences among progenies in characteristicts were analysed by means of variance. There were significant ( 5 level ) and highly significant ( 1 level ) differences among progenies on tree height and c.b.h. respectively. No significant differences among progenies were found on the characteristics of clean bole length and main branch number of trees.2. The heritability values were estimated on the basis of variance component for each characteristics. Heritability values of tree height, c.b.h., clean bole length and main branch number of trunk were 0.624, 0.695, 0, and 0 respectively.3. There was highly significant correlation between tree height of2-year old and ll-year old. Correlation coefficient was 0.8194. Significant correlations were found between 2-year old and 22-year old; ll-year old and 22-year old tree height.Correlation coefficient were 0.66587 and 0.61791 respectively.4. There was also highly significant correlation between 2-year old tree height and ll-year old d.b.h. Correlation coefficient was0.88005.Significant correlations were found between 2-year old tree height and 22-year old c.b.h., 11-year old d.b.h. and 22-year old c.b.h. Correlation coefficient were 0.61213 and 0.69962 respectively. |
本系統中英文摘要資訊取自各篇刊載內容。