dioecious

简明释义

英[daɪˈiːʃəs]美[daɪˈiʃəs]

adj. [动][植] 雌雄异体的

英英释义

单词用法

同义词

反义词

例句

1.But unlike most tree species common in the us, the ginkgo is dioecious, meaning trees are male or female.

但是银杏树和美国常见的树种不同，它是雌雄异株植物，也就是说银杏树有分雄性和雌性。

2.G. montanum is dioecious with spike inflorescence.

买麻藤雌雄异株，具穗状花序。

3.This paper presents for the first time information on the reproductive ecology of two dioecious fig species, mainly on their phenology, the reproductive behaviors of associated fig wasps and ecology.

本文主要从榕树物候学、榕小蜂繁殖行为学和生态学三个方面展开对西双版纳热带雨林下的歪叶榕和假斜叶榕两种榕树的繁殖机制研究。

4.Flowers hermaphroditic or plants functionally dioecious.

花两性的或植株功能上为雌雄异株。

5.This paper presents for the first time information on the reproductive ecology of two dioecious fig species, mainly on their phenology, the reproductive behaviors of associated fig wasps and ecology.

本文主要从榕树物候学、榕小蜂繁殖行为学和生态学三个方面展开对西双版纳热带雨林下的歪叶榕和假斜叶榕两种榕树的繁殖机制研究。

6.Examples include male and female plants in dioecious species aerial and submerged leaves alternation of gametophyte and sporophyte stages of a life cycle and mesophyll and bundle-sheath chloroplasts.

例如在雌雄异株物种中的雌性植物和雄性植物，气生的和被水浸没的叶片，生活史中的配子体与孢子体的交替，叶肉和维管束鞘叶绿体等。

7.A tall dioecious plant (Aruncus dioicus) native to the eastern United States, having bipinnately compound leaves and a large panicle of small white flowers.

假升麻，绣线菊属植物：（假升麻假升麻属） 属的一高大雌雄异株的植物，产于美国东部，二次羽状复叶，由小白花构成的复总状花序。

8.Trees or shrubs, dioecious; indumentum of simple hairs.

乔木或灌木，雌雄异株；毛被为单毛。

9.The dioecious 雌雄异株的 nature of ginkgo trees means that only female trees produce fruit.

银杏树的dioecious 雌雄异株的特性意味着只有雌性树木才能结果。

10.The holly plant is a dioecious 雌雄异株的 species, meaning you need both male and female plants for berries to develop.

冬青植物是一种dioecious 雌雄异株的物种，这意味着你需要同时有雄性和雌性植物才能结出浆果。

11.In a garden with dioecious 雌雄异株的 plants, it's important to plant both sexes to ensure reproduction.

在一个有dioecious 雌雄异株的植物的花园中，种植两性植物以确保繁殖是很重要的。

12.Many fruit trees, such as kiwis, are dioecious 雌雄异株的, requiring both male and female trees for pollination.

许多果树，如猕猴桃，都是dioecious 雌雄异株的，需要同时有雄性和雌性树木进行授粉。

13.Some species of willows are dioecious 雌雄异株的, which can complicate their cultivation in gardens.

一些柳树种类是dioecious 雌雄异株的，这可能会使它们在花园中的栽培变得复杂。

作文

In the vast world of botany, the diversity of plant reproductive strategies is a fascinating subject. Among these strategies, one particularly interesting category is that of dioecious plants. The term dioecious refers to species in which individual plants are either male or female, meaning that they produce only one type of gamete. This characteristic sets them apart from monoecious plants, which have both male and female reproductive structures on the same individual. Understanding the implications of being dioecious is crucial for comprehending plant ecology and reproduction.The evolutionary advantages of dioecious plants can be quite significant. For instance, having separate male and female plants can promote genetic diversity. When pollen from a male plant fertilizes the ovules of a female plant, it results in offspring that may possess a wider variety of genetic traits compared to self-fertilization, which is more common in monoecious plants. This genetic variation can enhance the resilience of a population, allowing it to adapt better to changing environmental conditions.However, dioecious plants also face certain challenges. One major challenge is the necessity for both male and female plants to be in proximity for successful reproduction. This spatial requirement can limit their distribution and may lead to difficulties in finding mates, especially in fragmented habitats. As a result, dioecious species often rely on wind or animal pollinators to facilitate the transfer of pollen between male and female plants. This dependence on external agents can make them vulnerable to changes in pollinator populations or environmental conditions.In terms of examples, many well-known plants exhibit dioecious characteristics. The holly tree is a classic example; only female hollies produce the bright red berries that many people associate with Christmas. Similarly, kiwifruit plants are dioecious, requiring both male and female plants to produce the sweet, edible fruits. The presence of these distinct reproductive roles underscores the importance of understanding plant biology not just for academic purposes but also for practical applications in agriculture and horticulture.From an ecological perspective, dioecious plants contribute to biodiversity in their ecosystems. They often play specialized roles in their habitats, providing food and shelter for various organisms. The dynamics of plant-pollinator interactions can be intricate, as the presence of both male and female plants can influence the behaviors of pollinators, which in turn affects the overall health of the ecosystem.In conclusion, the concept of dioecious plants is a vital aspect of botanical study that highlights the complexity of plant reproduction and ecology. While they offer benefits such as increased genetic diversity, they also present challenges related to reproduction and habitat distribution. Recognizing the significance of dioecious species helps us appreciate the delicate balance of ecosystems and the intricate relationships that sustain them. As we continue to explore the natural world, understanding terms like dioecious will enrich our knowledge and appreciation of the diverse forms of life that inhabit our planet.

在植物学的广阔世界中，植物繁殖策略的多样性是一个引人入胜的主题。在这些策略中，一个特别有趣的类别是dioecious植物。术语dioecious指的是那些个体植物为雄性或雌性的物种，这意味着它们只产生一种类型的配子。这一特征使它们与monoecious植物区分开来，后者在同一植物上具有雄性和雌性生殖结构。理解成为dioecious植物的含义对于理解植物生态学和繁殖至关重要。dioecious植物的进化优势可能是相当显著的。例如，拥有独立的雄性和雌性植物可以促进遗传多样性。当雄性植物的花粉授粉雌性植物的胚珠时，结果往往会产生比自我授粉（这在monoecious植物中更为常见）更广泛的遗传特征变异。这种遗传变异可以增强种群的韧性，使其更好地适应不断变化的环境条件。然而，dioecious植物也面临着某些挑战。一个主要挑战是雄性和雌性植物必须相互接近才能成功繁殖。这种空间需求可能限制它们的分布，并可能导致寻找配偶的困难，尤其是在栖息地破碎的情况下。因此，dioecious物种通常依赖风或动物传粉者来促进雄性和雌性植物之间的花粉转移。这种对外部媒介的依赖可能使它们在传粉者种群或环境条件变化时变得脆弱。在例子方面，许多知名植物表现出dioecious特征。冬青树就是一个经典的例子；只有雌性冬青才会产生许多人们与圣诞节相关联的鲜红色浆果。类似地，猕猴桃植物也是dioecious的，需要同时存在雄性和雌性植物才能生产可食用的甜美水果。这些不同的繁殖角色的存在强调了理解植物生物学的重要性，不仅是出于学术目的，也出于农业和园艺的实际应用。从生态的角度来看，dioecious植物为其生态系统的生物多样性做出了贡献。它们通常在栖息地中扮演特殊角色，为各种生物提供食物和庇护所。植物与传粉者之间的相互作用可能是复杂的，因为雄性和雌性植物的存在可以影响传粉者的行为，进而影响生态系统的整体健康。总之，dioecious植物的概念是植物学研究中的一个重要方面，突显了植物繁殖和生态学的复杂性。虽然它们提供了如遗传多样性增加等好处，但也带来了与繁殖和栖息地分布相关的挑战。认识到dioecious物种的重要性帮助我们欣赏生态系统的微妙平衡和维持它们的复杂关系。当我们继续探索自然世界时，理解像dioecious这样的术语将丰富我们对栖息在我们星球上的各种生命形式的知识和欣赏。