apomictic
简明释义
adj. 单性生殖的
英英释义
单词用法
无性生殖 | |
无性生殖物种 | |
无性发育 | |
无性形成 |
同义词
反义词
例句
1.The occurrence of apomictic reproductive structures on the leaf of the bog orchid, is of interest.
有趣的是在叶状沼兰叶子上发生无融合生殖的结构。
2.It is difficulty to select and breed apomictic germplasm among diploid rices at present, but it has become a hotspot to select and breed apomictic germplasm among polyploid rices.
目前,在二倍体水平上选育水稻无融和生殖种质的难度较大,而在多倍体水平筛选水稻无融和生殖新种质已成为水稻无融和生殖研究新的生长点。
3.The occurrence of apomictic reproductive structures on the leaf of the bog orchid, is of interest .
有趣的是在叶状沼兰叶子上发生无融合生殖的结构。
4.The temptation to recognize apomictic microspecies(agamospecies)as taxonomic species is far greater .
把无融合生殖小种(无性种)作为分类学上的种来承认,这点具有更大的迷惑性。
5.It is difficulty to select and breed apomictic germplasm among diploid rices at present, but it has become a hotspot to select and breed apomictic germplasm among polyploid rices.
目前,在二倍体水平上选育水稻无融和生殖种质的难度较大,而在多倍体水平筛选水稻无融和生殖新种质已成为水稻无融和生殖研究新的生长点。
6.The occurrence of apomictic reproductive structures on the leaf of the bog orchid , is of interest.
有趣的是在叶状沼兰叶子上发生无融合生殖的结构。
7.The studies on apomictic rice in our country are still in tentative stage and no apomictic germplasms with practical breeding value have been found.
我国水稻无融合生殖研究尚处在探索性阶段,还没有筛选到具有实用价值的无融合生殖种质。
8.In apomictic 无性生殖的 species, seeds can develop without fertilization.
在无性生殖的物种中,种子可以在没有受精的情况下发育。
9.Researchers are exploring the genetic mechanisms behind apomictic 无性生殖的 reproduction in certain grasses.
研究人员正在探索某些草类中无性生殖的遗传机制。
10.The phenomenon of apomictic 无性生殖的 flowering plants is a fascinating area of botany.
无性生殖的开花植物现象是植物学中的一个迷人领域。
11.The study of apomictic 无性生殖的 plants reveals interesting evolutionary strategies.
对无性生殖的植物的研究揭示了有趣的进化策略。
12.Some apomictic 无性生殖的 varieties can produce offspring that are genetically identical to the parent.
一些无性生殖的品种可以产生与亲本基因完全相同的后代。
作文
In the world of botany, the term apomictic refers to a form of asexual reproduction in plants where seeds are produced without fertilization. This fascinating process allows certain species to reproduce without the genetic contribution from a male counterpart, which can be advantageous in stable environments. The concept of apomictic reproduction is particularly interesting because it challenges traditional notions of sexual reproduction and highlights the diversity of reproductive strategies in the plant kingdom.Plants that exhibit apomictic reproduction often do so through mechanisms such as parthenogenesis or agamospermy. In parthenogenesis, the ovule develops into a seed without being fertilized by pollen, while agamospermy involves the development of seeds from an unfertilized egg cell. These processes enable plants to maintain their genetic identity across generations, as the offspring are genetically identical to the parent plant.One notable example of apomictic reproduction can be found in certain species of dandelions. These plants can produce seeds that are clones of the parent plant, allowing them to colonize areas rapidly without the need for pollination. This ability to reproduce asexually can be a significant advantage in environments where pollinators are scarce or where conditions are unfavorable for sexual reproduction.The ecological implications of apomictic reproduction are profound. For instance, in stable environments where the conditions do not change drastically, the ability to reproduce asexually can help ensure the survival of a species. However, it can also lead to reduced genetic diversity, which may make populations more vulnerable to diseases or environmental changes. Thus, while apomictic reproduction has its advantages, it also poses risks that must be considered in the broader context of plant ecology.Moreover, the study of apomictic plants has important implications for agriculture and horticulture. Understanding the mechanisms behind this form of reproduction could lead to the development of new crop varieties that are more resilient to environmental stresses. For example, if scientists can harness the principles of apomictic reproduction, they might be able to create crops that can thrive in adverse conditions, thereby enhancing food security in regions prone to climate variability.In conclusion, the term apomictic encapsulates a unique reproductive strategy that plays a crucial role in the survival and adaptation of certain plant species. By allowing plants to reproduce without fertilization, apomictic reproduction offers insights into the complexities of plant biology and ecology. As researchers continue to explore this phenomenon, we may uncover new ways to apply these findings to improve agricultural practices and promote biodiversity. The study of apomictic plants not only enriches our understanding of nature but also opens up possibilities for innovation in sustainable farming and conservation efforts.
在植物学中,术语apomictic指的是植物的一种无性繁殖形式,其中种子是在没有受精的情况下产生的。这一迷人的过程使某些物种能够在没有来自雄性对手的遗传贡献的情况下繁殖,这在稳定的环境中可能是有利的。apomictic繁殖的概念尤其有趣,因为它挑战了传统的性繁殖观念,并突显了植物王国繁殖策略的多样性。表现出apomictic繁殖的植物通常通过如孤雌生殖或无配生殖等机制来实现。在孤雌生殖中,胚珠在没有受到花粉的受精的情况下发展成种子,而无配生殖则涉及未受精卵细胞的发展成种子。这些过程使植物能够在几代之间保持其遗传身份,因为后代与母植物在遗传上是相同的。一个显著的apomictic繁殖例子可以在某些蒲公英种类中找到。这些植物可以产生母植物的克隆种子,使它们能够快速殖民区域,而无需授粉。这种无性繁殖的能力在授粉者稀少或条件不利于性繁殖的环境中可以是一个重要的优势。apomictic繁殖的生态影响是深远的。例如,在条件没有剧烈变化的稳定环境中,无性繁殖的能力可以帮助确保物种的生存。然而,它也可能导致遗传多样性的减少,这可能使种群更容易受到疾病或环境变化的影响。因此,虽然apomictic繁殖有其优势,但在植物生态的更广泛背景下,也必须考虑其风险。此外,对apomictic植物的研究对农业和园艺具有重要意义。理解这种繁殖形式背后的机制可能导致新作物品种的开发,这些品种在环境压力下更具韧性。例如,如果科学家能够利用apomictic繁殖的原理,他们可能能够创造出能在不利条件下茁壮成长的作物,从而增强气候变化易发地区的粮食安全。总之,术语apomictic概括了一种独特的繁殖策略,在某些植物物种的生存和适应中发挥着关键作用。通过使植物在没有受精的情况下繁殖,apomictic繁殖为我们提供了对植物生物学和生态复杂性的见解。随着研究人员继续探索这一现象,我们可能会发现将这些发现应用于改善农业实践和促进生物多样性的新方法。对apomictic植物的研究不仅丰富了我们对自然的理解,还为可持续农业和保护工作中的创新开辟了可能性。