CAJ | 학술논문

玉米株型的改良对提高单产具有重要的作用。以常用的16个玉米自交系及其组配的8个杂交种F1为材料，研究了玉米株型性状（株高、穗位高、穗位比、雄穗长度、雄穗分枝数、基部第三节间茎粗、叶向值、叶夹角、叶面积）的杂种优势。结果表明，除基部第三节间茎粗外，F1其他株型性状均与母本呈显著正相关，F1所有株型性状与父本的相关系数均未达到显著水平；株高、穗位高、雄穗长度、基部第三节间茎粗和叶面积这5个性状在F1代杂种优势较大。
옥미주형적개량대제고단산구유중요적작용。이상용적16개옥미자교계급기조배적8개잡교충F1위재료，연구료옥미주형성상（주고、수위고、수위비、웅수장도、웅수분지수、기부제삼절간경조、협향치、협협각、협면적）적잡충우세。결과표명，제기부제삼절간경조외，F1기타주형성상균여모본정현저정상관，F1소유주형성상여부본적상관계수균미체도현저수평；주고、수위고、웅수장도、기부제삼절간경조화협면적저5개성상재F1대잡충우세교대。
In this experiment ,eight maize hybrids and their parents from different sources were used as materials to study the heterosis of plant-type traits .The results showed that most of the plant-type traits in F1 generation were highly correlated with their female parents ,but were not correlated with their male parents ,except the stem diameter of the third internode .In all the plant-type traits ,five had relatively high heterosis in F 1 generation ,including the plant height ,ear height ,tassel length ,stem diameter of the third internode and leaf area .