CAJ | 학술논문

　　以两个玉米品种为材料，设置肥密顺、逆境对比试验，应用量纲分析原理筛选反映玉米穗与粒生长特征的变量及其数量关系式，探索量纲分析在玉米花后果穗和穗粒生长特征研究中的应用价值。重量、密度、容(体)积和相对生长率均是果穗和穗粒的重要生长特征。授粉后，果穗密度最小值、最大值分别为0.072和0.56 g/cm3，穗粒密度为0.061和0.63 g/cm3，它们的时间动态均符合y=a+b×cos(ct+d)。果穗密度、穗粒密度、果穗重量相对生长率、穗粒重量相对生长率、果穗体积相对生长率和穗粒容积相对生长率都具有逆境的稳定性，授粉至成熟的均值分别为0.273 g/cm3、0.285 g/cm3、0.10、0.11、0.076和0.076。果穗体积相对生长率和穗粒容积相对生长率具有基因型的稳定性。同一器官的重量相对生长率和容(体)积相对生长率之间关系符合y=ax/(b+x)。量纲分析有助于解析玉米花后果穗和穗粒生长。
　　이량개옥미품충위재료，설치비밀순、역경대비시험，응용량강분석원리사선반영옥미수여립생장특정적변량급기수량관계식，탐색량강분석재옥미화후과수화수립생장특정연구중적응용개치。중량、밀도、용(체)적화상대생장솔균시과수화수립적중요생장특정。수분후，과수밀도최소치、최대치분별위0.072화0.56 g/cm3，수립밀도위0.061화0.63 g/cm3，타문적시간동태균부합y=a+b×cos(ct+d)。과수밀도、수립밀도、과수중량상대생장솔、수립중량상대생장솔、과수체적상대생장솔화수립용적상대생장솔도구유역경적은정성，수분지성숙적균치분별위0.273 g/cm3、0.285 g/cm3、0.10、0.11、0.076화0.076。과수체적상대생장솔화수립용적상대생장솔구유기인형적은정성。동일기관적중량상대생장솔화용(체)적상대생장솔지간관계부합y=ax/(b+x)。량강분석유조우해석옥미화후과수화수립생장。
Two maize cultivars were grown in fields under 2 growth condition regimes of plant density by fertil-ization, and images of whole ear sides and their axial sections were acquired at 7 days intervals throughout kernel fill-ing stages. From these images, ear volumes and bulk volumes of whole ear kernels were extracted using image analysis. Ears were hand shelled and both ears and kernels weighted. Dimension analysis was applied to define growth relevant variables of ears and kernels, and to feature quantitative relations among geometric and gravitic and dynamic traits:weight (W), density (D), volume (V) and relative growth rate (R) for ears (E) and whole ear kernels (K). After silking, ear mass density (ED, similarly hereinafter) ranged from 0.072 to 0.56 g/cm3, and KD from 0.061 to 0.63 g/cm3. They both followed a time function in the form y=a+b ×cos(ct+d). None of ED, KD, EWR, EVR and KVR differed between 2 regimes, further, neither of EVR and KVR varied with culitvars. ED, KD, EWR, EVR and KVR post-anthesis until maturity averaged as 0.273 g/cm3, 0.285 g/cm3, 0.10, 0.11, 0.076 and 0.076. WR is a function of VR as the form of y=ax/(b+x) in respect to the same organs studied. Dimension analysis is helpful in understanding growth dynamics of post-anthesis ears and their kernels in maize.