종실옥수수 자식계통들에 대한 형태적 특성 연구

초록

We evaluated the morphological characteristicsof 156 maize inbred lines, which were developed to breedingnormal maize variety at Maize Experiment Station, GangwonAgricultural Research and Extension Services, by examining11 quantitative and three qualitative characteristics. On theevaluation of three qualitative traits for 156 maize inbredlines, most inbred lines showed yellow (85 and 84 inbredlines) at tassel color (QL1) and silk color (QL2), and showedsemi erect (105 inbred lines) at plant type (QL3). While,the evaluation of 11 quantitative traits for 156 maize inbredlines, they showed the morphological variation in days oftasseling (QN1, 56.5 to 76.0 days), days of silking (QN2,59.0 to 85.5 days), stem thickness (QN3, 12.7 to 42.9 mm),plant height (QN4, 111.8 to 239.8 cm), ear height (QN5,48.2 to 126.5 cm), 100 kernel weight (QN6, 14.9 to 36.4 g),ear length (QN7, 10.0 to 79.0 cm), setted kernel length(QN8, 8.0 to 70.5 cm), ear thickness (QN9, 4.0 to 22.0 cm),total kernel weight (QN10, 22.0 to 490.0 kg) and watercontent (QN11, 9.3 to 11.9%), respectively. As a result, 11inbred lines (00hf3, 00hf19, 00hf30, 00hf36, 02S8069,02S8072, 02S8090, 02S8099, 05S10011, 06S8085-6, 07S8011)in the 156 normal maize inbred lines have showed comparativelyhigh values. While, the results of PCA (principal componentanalysis) indicated that the ear length (QN7), setted kernellength (QN8), ear thickness (QN9) and total kernel weight(QN10) greatly contributed in positive direction on the firstprincipal components. And also, days of tasseling (QN1),days of silking (QN2), plant height (QN4) and ear height(QN5) contributed in negative direction on the second principalcomponent. Thus these morphological characters, which weregreatly contributed in the first and second principal components,might be considered to be useful for discrimination among156 normal inbred lines. Specifically, this study's assessmentof morphological characteristics of 156 normal inbred lineswill be helpful useful for normal maize breeding programssuch activities as planning crosses for hybrid and line developmentat Maize Experiment Station, Gangwon AgriculturalResearch and Extension Services

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