mature pollen grain 读音:美英 mature pollen grain基本解释 成熟花粉 分词解释 mature(人、树木、鸟或动物)成熟的 pollen花粉 grain谷物,粮食 mature pollen grain是什么意思 mature pollen grain怎么读 mature pollen grain在线翻译 mature pollen grain中文意思 mature pollen grain的解释 mature pollen grain的发音 ...
Pollen grainMale germ unitReproductionDuring the sexual reproduction of flowering plants, epigenetic control of gene expression and genome integrity by DNA methylation and histone modifications plays an important role in male gametogenesis. In this study, we compared the chromatin modification patterns of ...
Changes in the Plantago lanceolata mature pollen ultrastructure and Pla l 1 allergen localisation after grain hydrationPlantaginaceaeactivated pollenultrastructure changesWe have conducted the study of ultrastructural changes of wall and cytoplasm of Plantago lanceolata (English plantain) pollen grains during...
Tail-like structure of the sperm cell is observed in the mature pollen grain of wheatat the ultrastructural level. Most part of the obtuse head of the mature sperm is occupiedby the elliptical nucleus, while the other attenuate end is the "tail" formed by the cy-toplasmic extension. The ...
mature pollen grain, it is apparent that several changes must take place after pollination in order to achieve the high amount of close contact that occurs between the vegetative nucleus and the numerous terminal cell extensions of the leading sperm in the pollen tube of amaryllis ( Mogensen 1986...
G. Sutton, 2009: Water deficit reduced fertility of young microspores resulting in a decline of viable mature pollen and grain set in rice. J. Agron. Crop Sci. 195, 11-18.Nguyen, G.N. & Sutton, B.G. 2009. Water deficit reduced fertility of young microspores resulting in a decline ...
Before isolating the sperm cells from pollen or pollen tubes of spinach, Spinacia oleracea L., we must know their ultrastructure, i.e. the organelle content and the membrane compilation and also the techniques with which the sperm cells can be grown in vitro , after which haploid plants can ...