【摘要】 经奈氏比色测定两组栽培玉米自交系×大刍草远缘杂种F1及其亲本蛋白质含量。结果,大刍草的含量最高,为21.9%,其余依次为亲本自交系4792×大刍草的远缘杂交种F1(16.9%)、亲本自交系3153(15.2%)、自交系3153×大刍草的远缘杂交种F1(13.6%)和亲本自交系4792(12%)。杂种优势分析表明,栽培玉米自交系×大刍草的杂种F1蛋白质含量表现负向中亲优势,甚至负向超亲优势,而且杂交的双亲蛋白质含量差异越大杂种优势表现越强,差异越小杂种优势越弱。更多还原

【Abstract】 Distant cross between maize inbred line（4792 and 3153） and Z.mixicana was done,and Colorimetry determine protein content on distant crossing progeny F₁ and its parents were analyzed.The protein content of Z.mixicana was 21.9 %,which was the highest.Hybrid F₁ maize 4792 and Z.mixicana,its protein content was 16.9 %.the protein content of maize 3153 was 15.2 %.while protein content of progeny F₁（13.6 %）was evident lower than that of its parents maize 3153 and Z.mixicana.the protein content of maize 4792（12 %） was the lowest.The results showed that the protein content of distant crossing progeny F₁ was minus mid-parent heterosis,even was minus over-parent heterosis.The more difference parents had in protein content,the more heterosis would have.更多还原