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題 名 | 臺南白玉米不同自交世代間F[feb5]雜種產量的相關及其組合力之變化=The Combining Ability and Relation on Yield among Different Generations of F[feb5]Hybrid of Tainan-White Maize (Zea mays L.) Inbred Lines |
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作 者 | 謝光照; 曾富生; | 書刊名 | 中華農業研究 |
卷 期 | 50:3 2001.09[民90.09] |
頁 次 | 頁33-39 |
分類號 | 434.11 |
關鍵詞 | 臺南白; 玉米; 自交系; F[feb5]雜種; 產量; Tainan-white; Maize; Inbred lines; F[feb5]hybrids; Yield; |
語 文 | 中文(Chinese) |
中文摘要 | 以臺灣六個不同地區之臺南白族群所分離之S₂、S₃、S₄及S[8fa3]世代之自交系,其個別世代之半互交15個F₁,合計60個F₁雜種為材料,探討自交的早期世代與較後世代間F₁雜種產量表現之相關及其遺傳組成分之變化。結果顯示,臺南白S₂與S[8fa3]世代間之相關呈顯著,而S₃與S₄、S₃與S[8fa3]及S₄與S[8fa3]世代之F₁雜種間之相關,在生理成熟期之果穗乾重及籽粒乾重呈極顯著,表示在自交系的早期S₂世代,即可進行組合力檢定,淘汰大部份組合力較差之系統,而S₂世代在產量具有較佳之組合力者,其較後自交世代(S₃)之組合力表現與早期世代呈現一致趨勢。不同自交世代間F₁雜種其產量組合力表現的一致,可能與其自交系的一般組合力(累加性基因)有密切關係。 |
英文摘要 | The objective of this study was to determine if the combining ability of inbred lines derived from six Tainan-white (TNW) populations at early generation (S₂) of inbreeding were similar to that at later generations. The selfing lines (S₂ to S[8fa3]) were crossed following a half-diallel mating design and produced 15 F₁ hybrids for each generation. A total of 60 hybrids were planted at Lunpei in fall crop season of 1997, to determine the correlation between S₂ and advanced generations in phenotypic expressions, and to compare the combining abilities of inbred lines among different generations. The result showed that the heterotic pattern and combining ability in the early generation (S₂) were similar to that in advanced generations. Three existed significant correlations between the hybrids derived from the S₂ and S[8fa3] generation for ear dry weight and grain dry weight in maturity. It indicated that the yield ability of S[8fa3] hybrids could be precisely predicted from that of S₂ hybrids. Thus it suggests that early testing was effective for predicting the combining abilities expressed at later inbreeding generations. It was also that the additive effects (GCA effect) of inbred lines maybe a main contribution to the relationships between the S₂ to S[8fa3] generation hybrids for ear dry weight and grain dry weight. |
本系統中英文摘要資訊取自各篇刊載內容。