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| 題 名 | Allometrical Growth of the Quantitative Characters of Plants Ⅱ. The Inheritance of Plant Leaf Shape and Leaf Size of Tobacco=植物數量性狀間相對生長之遺傳研究(2)--菸草葉形狀與大小之遺傳分析 |
|---|---|
| 作 者 | 鄔宏潘; | 書刊名 | Botanical Bulletin of Academia Sinica |
| 卷 期 | 38:3 1997.07[民86.07] |
| 頁 次 | 頁205-214 |
| 分類號 | 434.824 |
| 關鍵詞 | 葉形指數; 葉面積; 遺傳分析; 數量遺傳; 菸草; Genetic analysis; Leaf shape; Leaf size; Quantitative character; Tobacco; |
| 語 文 | 英文(English) |
| 中文摘要 | 本研究利用相對生長函數所推測之葉形指數及利用葉長與葉寬所推測之葉面積估值 探討此二性狀之遺傳機制,所用模式共有四種:(1)累加性、顯性之三介量遺傳模式(模式1), (2)累加性、顯性及上位性之六介量遺傳模式(模式2),(3)累加性、顯性及生長時間的六介量 遺傳模式(模式3),(4)累加性、顯性、上位性及生長時間之十二介量遺傳模式(模式4)等,用 菸草六世代,三種葉位及六生長期的葉形指數與葉面積為資料,經統計分析及推測後認為模 式4可用以說明葉形指數之遺傳機制,即累加性、顯性及三種上位性以及這些基因與生長時間 之交感作用等控制葉形之變化,狹葉形對橢圓形為顯性,天葉之葉形種類較中葉及土葉多, 土葉之種類變化最少,顯性作用呈負值且其絕對值比累加性者大,即葉形大部分由顯性作用 所支配。葉片大小之遺傳只有三介量遺傳模式(模式1)可用於說明其機制,但只限於第三或第 四生長期,累加性作用較具重要性且呈負值,顯性作用呈正或負值,天葉及土葉的葉小者為 顯性,而中葉則以葉大者為顯性,其遺傳機制尚難用本研究所用模式去瞭解。 |
| 英文摘要 | In this paper, six generation means of tobacco (Nicotiana tobacum) were used to study the genetic mechanism of leaf size and shape by the method of generation mean analysis. Four models were considered to establish a suitable one, namely: (1) a three-parameter genetic model (Model 1), (2) a six-parameter digenic interaction genetic model (Model 2), (3) a six-parameter synthetical genetic model (Model 3), and (4) a twelve-parameter synthetical genetic model (Model 4). The data collected from six generations measuring three leaf positions and six growth periods of tobacco leaf shape index and leaf area were used for analysis. The results showed that additive and dominant gene effects, epistasis, and their interactions with growth time (Model 4) are adequate to illustrate the inheritance of leaf shape. Elongated leaf type is dominant over oval leaf type; top leaf has more variability of leaf shape than middle and lower leaves; dominant effect is negative and more influential than additive effect; additive, dominant and digenic interaction effects may change during growth. The additive-dominant model (Model 1) may be used to illustrate the genetic mechanism of leaf size in the third or fourth growth period for different leaf positions. Additive gene is negative and important to the leaf area. Dominant effect either has positive or negative value depending upon the leaf position. Small leaf size is dominant in top and lower leaves, but large leaf size is dominant in the middle leaves. It is still difficult to resolve the genetic mechanism of leaf size by these models. |
本系統中英文摘要資訊取自各篇刊載內容。