刺豆花形态计量学分析。(豆科)表明在巴西潘帕草原的孤立种群中生殖系统的灵活性

IF 1.7 3区农林科学 Q2 FORESTRY

Annals of Forest Research Pub Date : 2018-03-28 DOI:10.15287/AFR.2018.959

Camila Lobo, V. M. Stefenon

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引用次数: 2

摘要

对生长在潘帕草原的仿豆(Prosopis affinis)花序和花的形态特征进行了测量，旨在间接推断该物种的生殖系统。花粉/胚珠比和异交指数表明了生殖系统的灵活性，其值介于兼性自交和异交之间。虽然花序上的基生花雄蕊减少，但没有观察到与花序上花位置相关的明显生殖专门化。建议进一步分析和比较分离种群和较大连续种群，并通过遗传研究和对照实验估计亲和木的实际异交率，以评估亲和木的自相容性，从而获得更多的信息。

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Floral morphometric analysis of Prosopis affinis Spreng. (Fabaceae) suggests flexibility of the reproductive system in isolated populations within the Brazilian Pampa

Morphological characteristics of inflorescences and flowers of Prosopis affinis growing in the Pampa biome were measured aiming to indirectly infer the species reproductive system. The pollen/ovule ratio and the outcrossing index suggest flexibility of the reproductive system, with values intermediary between facultative autogamy and xenogamy. No clear reproductive specialization related to flower position in the inflorescence was observed, although basal flowers in the inflorescence presented reduction of the androecium. Further analyzes comparing isolated and larger continuous populations, as well as estimations of the real outcrossing rate of P. affinis through genetic studies and controlled experiments to evaluate auto-compatibility are recommended in order to generate more information about this issue.

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来源期刊

Annals of Forest Research FORESTRY-

CiteScore

2.20

自引率

11.10%

发文量

审稿时长

12 weeks

期刊介绍： Annals of Forest Research is a semestrial open access journal, which publishes research articles, research notes and critical review papers, exclusively in English, on topics dealing with forestry and environmental sciences. The journal promotes high scientific level articles, by following international editorial conventions and by applying a peer-review selection process.