Campbell W F, Bubenheim D L, Salisbury F B, Bingham G E, McManus W R, Biesinger H D, Strickland D T, Levinskikh M, Sytchev V N, Podolsky I, Ivanova I, Chernova L, Jahns G
Department Plants, Soils, and Biometeorology, Utah State University, Logan, UT 84322-4820, USA.
Life Support Biosph Sci. 2000;7(3):263-72.
Scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) microanalysis were used to investigate the nature of crystals deposited on leaves of Mir- and Earth-grown Super Dwarf wheat (Triticum aestivum L.) plants. Leaves from these plants exhibited dense and uniformly distributed crystals on leaf abaxial surfaces when viewed by SEM. Young leaves showed that crystals initially accumulated around the stomata on the adaxial surface, but became more dense and uniformly distributed as the leaves aged. EDX microanalyses of the Balkanine (a nutrient charged clinoptilolite zeolite) medium in which the wheat plants were grown showed an elemental pattern similar to that observed on the wheat leaves. The absence of N and P in the Balkanine suggests that they were completely utilized by the plants. Only Si and O were evident in the drying agent, Sorb-it-Silica (TM), and perhaps could have accounted for some of the Si observed on the plant tissue. Grant numbers: NCC2-831, 84322-4810
利用扫描电子显微镜（SEM）和能量色散X射线（EDX）微分析技术，研究了在模拟微重力和地球重力条件下种植的超级矮秆小麦（Triticum aestivum L.）叶片上沉积晶体的性质。通过扫描电子显微镜观察，这些植株的叶片在叶背表面呈现出密集且分布均匀的晶体。幼叶显示，晶体最初在叶正面的气孔周围积累，但随着叶片老化，晶体变得更加密集且分布均匀。对种植小麦植株的巴尔干宁（一种带营养电荷的斜发沸石）培养基进行的能量色散X射线微分析显示，其元素模式与在小麦叶片上观察到的相似。巴尔干宁中氮和磷的缺失表明它们已被植物完全利用。在干燥剂Sorb-it-Silica（TM）中仅明显存在硅和氧，它们可能是植物组织上观察到的部分硅的来源。资助编号：NCC2 - 831、84322 - 4810
