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來源資料
頁籤選單縮合
題 名 | 三系雜交種青割玉米農藝性狀與鮮草產量之研究=Studies on the Agronomic Traits and Forage Yield of Three-way Cross Forage Maize Hybrids |
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作 者 | 何千里; 謝光照; 曹文隆; 盧煌勝; | 書刊名 | 中華農業研究 |
卷 期 | 50:3 2001.09[民90.09] |
頁 次 | 頁25-32 |
分類號 | 434.11 |
關鍵詞 | 青割玉米; 單雜交種; 三系雜交種; 雜種潛勢; Forage maize; Single cross hybrid; Three-way cross hybrid; Potence value; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗以四個自交系(Hi28、TA85-58、TX601及TA82-36代號分別為A、B、C及D)、四個單雜交種(TNG1、TNG2、TNG3、TNG351代號分別為(E × F)、(G × F)、(I × J)及(K × L))及其16個三系雜交種為材料,於1998年春作進行田間試驗。變方分析結果顯示,六項農藝性狀與鮮草產量在參試品系間均呈現顯著或極顯著。三系雜交種青割玉米之公頃鮮草產量與開花期、吐絲期及稈徑相關不顯著,而與株高、穗位高及單株葉面積呈顯著或極顯著正相關,此類性狀可作為選拔高產三系雜交種青割玉米之參考指標。參試材料中之單雜交種與三系雜交種之青割公頃鮮草產量平均值相近且無顯著差異。個別組合進行產量比較,以(E × F)×D(57,563 kg ha¯¹)、(G × F)×D(53,625 kg ha¯¹)及(I × J)×D(50,375 kg ha¯¹)三個組合最高產,三組合均以自交系D(TA82-36)為親本雜交所得之三系雜交種組合,且此三個高產組合之雜種潛勢亦呈現超顯性。試驗結果顯示,只要慎選三系雜交種青割玉米親本,將可獲得高產潛力雜交後代,將之納入育種計畫對臺灣青割玉米改良應有助益。 |
英文摘要 | Four inbred lines, namely, Hi28 (A), TA85-58 (B), Tx601 (C) and TA82-36 (D), and four single cross hybrids, namely, TNG1 (E × F), TNG2 (G × F), TNG3 (I × J) and TNG351 (KF × L), and their sixteen three-way cross hybrids of forage maize were evaluated for agronomic traits and forage yield in the spring crop of 1998. Results of analysis of variance showed that days to flowering, days to silking, plant height, ear height, leaf area, stalk diameter and forage fresh weight were significantly correlated among these twenty-four genotypes. The forage fresh weight was positively correlated to plant height, ear height and leaf area, but it was not correlated to days to flowering, days to silking and stalk diameter in three-way cross hybrids. The relationships may be used as selection indicators in three-way cross hybrid breeding program. No significant differences were found between forage fresh weight produced from single cross hybrids and three-way corss hybrids. Among three-way cross hybrids, (E × F) × D(57,563 kg ha¯¹), (G × F) ×D (53,625 kg ha¯¹) and (I × J) ×D (50,375 kg ha¯¹) were the better combinations in terms of forage fresh weight. These three hybrids were all crossed with the inbred line D, and expressed a higher hybrid potence value and an over dominance character. Results suggest that a higher forage production hybrid can be made from three-way cross breeding by selecting parental lines with high-yield potential. |
本系統中英文摘要資訊取自各篇刊載內容。