【摘 要】
：
不同节位的叶片,由于叶面积、生长速度等各不相同,故光合产物对生殖器官的影响也不相同。研究玉米植株不同层次叶片的生长规律及其与穗分化的关系,亦即以叶片作为形态指标,
论文部分内容阅读
不同节位的叶片,由于叶面积、生长速度等各不相同,故光合产物对生殖器官的影响也不相同。研究玉米植株不同层次叶片的生长规律及其与穗分化的关系,亦即以叶片作为形态指标,掌握穗分化时期,可以提供玉米田间管理在不同生育阶段主攻某层次叶片的理论依据。材料与方法新单14号、鲁原单4号和京早七号三个单交种,从出苗开始,每个品种选定5株,并进行叶序标记(第5片叶),作为观察株。每两天观察一次,直到叶片全展。记录各
Leaves of different nodes, due to the different leaf area, growth rate, so photosynthetic products on reproductive organs are not the same. The study of the growth pattern and the relationship with the panicle differentiation of different levels of maize plants, that is, taking leaf as the morphological index, grasping the stage of panicle differentiation can provide the theoretical basis for maize field management at different stages of growth. MATERIALS AND METHODS: Three single cross breeds, Xindan 14, Luyuan Dao 4 and Jingzao 7, were selected from the seedling stage. Five plants were selected for each variety and leaf sequence markers (the fifth leaf) were used as the observation strain . Observe every two days until the leaves are fully expanded. Record each
其他文献
We consider the inverse scattering problem of a perfectly conducting one-dimensional rough surface in the case that the incident field is unnecessary to be time
We design an isotropic electric-field sensing system using an optical probe.The optical probe consists of three electric-field sensors based on a Mach-Zehnder i
Semi-insulating (SI) GaN is grown using N2 as the nucleation layer (NL) carrier gas combined with an optimized annealing time by metalorganic chemical vapour de
Ni/Ti multilayers.which can be used for neutron monochromators,are designed,fabricated and measured.Firstly,their reflectivities are simulated based on the Nevo
传播学界在研究对象上追逐热点的趋势由来已久。与“新媒体”这一概念建立关联,已成为一段时间以来国内外传播学科当中炙手可热的学术产出模式之一。然而,带有“新媒体”字样
Surface change of gallium nitride specimens after bombardment by highly charged Pbq+-ions (q=25, 35) at room temperature is studied by means of atomic force mic
We demonstrate the promising configurations that permit very narrow spectral filtering. The waveguide filter consists of a glass slab with an anomalous thicknes
The single charge transfer process in 3 He2+ + 4He collisions is investigated using the quantum-mechanical molecularorbital close-coupling method, in which the
The subband energy and lasing wavelength of compressively strained triangular In0.53Ga0.47As/JnAs quantum well are calculated and compared with the conventional
We investigate a set of complex heart rate time series from healthy human in different behaviour states with the detrended fluctuation analysis and diffusion en