中英文生物毕业论文

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Abstract: the market demand for the buckeye, but because the buckeye conventional breeding way is seed propagation, reproductive slower, plus the buckeye rate is low and seeds, seedlings to inactivation rate is weak, so the unearthed, reproduction rate low, difficult to meet the market demand. Therefore, from the flowering length, the effect of the climatic conditions and take the morphological structure, flowering length to the pollen of energy, energy, the seed vigor of pollen influence on some physiological indexes of determination to proven buckeye rate, low birth rate, low reason for improving the buckeye setting out the theoretical basis and reproduction rate, in order to improve the buckeye breeding take measures to meet the demand of the market. The growth of the buckeye flowering characteristics Keywords: buckeye, Growth flowering, Dynamic measurementAbstract: The market demand for larger Aesculus, Aesculus However, due to the way conventional breeding sow reproduction, slow reproduction, combined with the strong low Aesculus seed and easy to inactivation, the rate of seedlings less unearthed Therefore, a lower reproductive rate and are difficult to meet the market demand. Therefore, the length of flowering period, the impact of climatic conditions, as well as the form of flower structure, flowering to the length of pollen viability, pollen viability of different conditions, the effects of seed vigor, such as the determination of some physiological indicators of Aesculus proven to lower seed-setting rate, the reasons for the low rate of reproduction, in order to improve the seed-setting rate Aesculus, reproduction rate to identify the theoretical basis, in order to improve the breeding Aesculus to take concrete measures to meet the needs of the market. 还有这个标题：Aesculus Growth Characteristics of Flowering and Fruiting 希望对你有用~~~~~~~~~~~~~~~~~

Original: Abstract: The first in the preamble of the spices on the domestic resources development and utilization of the potential significance of this paper, which raises the significance. In this paper, and then briefly summed up the development and use of domestic and has been under study by the status of spice plants. The third part of the major domestic spice plant resources to investigate the roster finishing, in the last part of the article made a number of in the development and utilization of the existing problems, and described the corresponding countermeasures.

Abstract: This article first elaborated the domestic spice resources development potential and the development use significance in the foreword part, thus draws out this article the research significance. Then this article the brief summary domestic has developed the use and perfume plant's present situation which studies. The third part carries on the investigation to the domestic main perfume plant resources name list to reorganize, the article in the last part proposed some question which exists in the development use, and elaborated the corresponding countermeasure.

Abstract: The method of paraffin serial sections and optical microscopy conducted on the anatomical study of soybean seedlings, soybean seedlings to investigate the organization of connectivity problems, research cotyledon node zone theory. The experimental results show that: in the whole soybean cotyledon areas, throughout the existence of both myeloid, which is angiosperm cotyledon on the origin of the myeloid, Zimmemaann shift to theory-based (Basipetalshiftingtheory) also provided evidence of a benefit. So says section area of soybean seedling cotyledon emigration to the base type (Basipetalshiftingtype). Key words: optical microscopy; soybean; seedlings; cotyledon node zone; primary vascular system;