Atypical distyly in Psychotria goyazensis Mull. Arg. (Rubiaceae), an intramorph self-compatible species
Atypical distyly in Psychotria goyazensis Mull. Arg. (Rubiaceae), an intramorph self-compatible species
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在Psychotria goyazensis Mull 中非典型的distyly。
DOI：
10.1590/s0102-33062013000100016
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发表时间：
2013
影响因子：
1.1
通讯作者：
H. Consolaro
中科院分区：
文献类型：
--
作者：
Ebenézer B. Rodrigues;H. Consolaro
Distyly 是一种基因控制的花二态性，其特征是针形和线形的相互定位、异形不相容系统和平衡的形态比率（等值性）。本研究旨在研究Psychotria goyazensis Mull 的物候、分布特征、生殖生物学和花客。精氨酸。 （茜草科），一种内型自交亲和物种，生长在巴西戈亚斯州卡塔劳市的热带半落叶森林中。记录个体样本的物候学，使用新鲜和固定的材料描述花的形态。使用受控的手工授粉测试了不亲和系统。收集并识别花卉访客。花期开始于2009年11月，结束于2010年4月。果实发育期为2009年12月至2010年3月。种群表现不典型，因为只发现了具有针花的植物。内同型授粉和开放授粉比自发自花授粉结出更多的果实。主要的访花者是 Systropus sp。 （双翅目），以及膜翅目和鳞翅目物种。通过控制多态性的基因的分解/排列，可以发生distyly的形态变异。然而，一些作者认为，在茜草科中，不相容系统的遗传控制可以独立于形态因素而运作，并且物种可能以不同的方式对相同的选择压力做出反应。
Distyly is a genetically controlled floral dimorphism, characterized by the reciprocal positioning of pin and thrum morphs, a heteromorphic incompatibility system and a balanced morph ratio (isoplethy). This study aimed to investigate the phenology, features of distyly, reproductive biology, and floral visitors of Psychotria goyazensis Mull. Arg. (Rubiaceae), an intramorph self-compatible species, in a tropical semideciduous forest in the municipality of Catalao, located in the state of Goias, Brazil. The phenology was recorded for a sample of individuals, the floral morphology being described using fresh and fixed material. The incompatibility system was tested using controlled hand pollinations. Floral visitors were collected and identified. Blooming began in November 2009 and ended in April 2010. Fruits developed from December 2009 to March 2010. The population presented atypical distyly, because only plants with pin flowers were found. The intramorph and open pollinations set more fruits than did spontaneous self-pollinations. The main flower visitors were Systropus sp. (Diptera), as well as Hymenoptera and Lepidoptera species. Morphological variations in distyly can occur by breakdown/permutation of the gene that controls the polymorphism. However, some authors argue that, in Rubiaceae, genetic control of the incompatibility system can operate independently of the morphological factor, and species might respond in different ways to the same selective pressures.
影响因子：
3
作者：
Naiki, A;Nagamasu, H
通讯作者：
Nagamasu, H