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首页> 外文期刊>International Journal of Plant Breeding and Genetics >Testcross Performance and Heterosis of Selected Quality Protein Maize (QPM) (Zea mays L.) Inbred Lines
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Testcross Performance and Heterosis of Selected Quality Protein Maize (QPM) (Zea mays L.) Inbred Lines

机译：优质玉米（Zea mays L.）自交系的Testcross性能和杂种优势

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One hundred thirty four genotypes were evaluated applying simple lattice design during 2007 cropping season. In this study BHQ542 maize variety and other checks were used at two locations. The study objective was to determine performance of the test crosses, heterosis and heterotic patterns of the inbred lines and testers and to identify promising crosses for future advanced trial. All agronomic and physiological data were recorded and analyzed. There was significant differences among genotypes for most of the traits with few exceptions. Based on the mean value of grain yield, sixteen crosses at Awassa and only four crosses at Melkassa were superior to QPM hybrid (BHQ542) but no crosses out yielded this check in the combined data. However, five lines crossed with Tl and seven lines crossed with T2 gave superior yield than the second best common check BH540 in the combined data. In this study crosses with T2 were superior to that of crosses with Tl. Heterosis value varied highly for most of the traits studied at individual location and across locations. The highest heterosis over mid and better parent for grain yield was 189.47% (L36xT2) and 100.8% (L36xT2) at Awassa and 172.22% (L18xT2) and 62.65% (L35xT2) at Melkassa, respectively. Among the twenty maximum heterosis of grain yield only L5, L10, L15, L16, L18, L23, L28, L35, L36, L37 and L41 were common for both locations.
机译：在2007年的种植季节期间，采用简单的点阵设计对134个基因型进行了评估。在这项研究中，在两个地方使用了BHQ542玉米品种和其他检查方法。研究目的是确定自交系和测试仪的测试杂交，杂种优势和杂种模式的性能，并为将来的高级试验确定有希望的杂交。记录并分析所有农艺和生理数据。除少数例外，大多数性状的基因型之间存在显着差异。基于谷物单产的平均值，Awassa的16个杂交和Melkassa的4个杂交均优于QPM杂交（BHQ542），但在组合数据中没有剔除产生此检验。但是，与T1交叉的五行和与T2交叉的七行给出了比组合数据中第二好的普通检查BH540更好的产率。在该研究中，与T2的杂交优于与T1的杂交。在个别地点和跨地点研究的大多数特征，杂种优势值差异很大。中产和优质亲本的最高杂种优势在Awassa分别为189.47％（L36xT2）和100.8％（L36xT2），在Melkassa分别为172.22％（L18xT2）和62.65％（L35xT2）。在二十个最大的谷物产量杂种优势中，只有L5，L10，L15，L16，L18，L23，L28，L35，L36，L37和L41在这两个位置上相同。

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