INTRASPECIFIC VARIABILITY OF SEED MORPHOLOGY IN CAPPARIS SPINOSA L.

IF 0.5 4区生物学 Q4 PLANT SCIENCES

Acta Biologica Cracoviensia Series Botanica Pub Date : 2013-12-01 DOI:10.2478/ABCSB-2013-0027

E. Saadaoui, J. J. Gómez, E. Cervantes

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引用次数: 24

Abstract

Morphological description of seeds is a required step for analysis of biodiversity in natural populations and may give clues to adaptive strategies in species evolution. A cardioid is the curve described by a point of one circumference rolling around another circumference of equal radius. Models based on adjustment of seed shape with cardioid curves have been described for Arabidopsis thaliana and the model legumes Lotus japonicus and Medicago truncatula. In this work the model is applied to analyze seed morphology in populations of two subspecies of Capparis spinosa growing in Tunisia. Adjustment of seed images to cardioid curves, followed by statistical analysis of similarity in the complete images as well as in each of four quadrants, allows an accurate description of seed shape. The results show differences in morphology between subspecies. Seeds of subsp. rupestris present higher diversity of shape than seeds of subsp. spinosa. This may indicate primitiveness of C. subsp. rupestris seeds, associated with nonspecialization. The results are discussed in relation to the ecological strategies of both subspecies in their evolution.

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荆芥种子形态的种内变异。

种子形态描述是分析自然种群生物多样性的必要步骤，可能为物种进化的适应策略提供线索。心线是由一个圆周上的点绕另一个半径相等的圆周转动所描述的曲线。拟南芥和模式豆科植物荷花和紫花苜蓿已经建立了基于心型曲线调整种子形状的模型。在这项工作中，应用该模型分析了生长在突尼斯的两个亚种的种子形态。将种子图像调整为心线曲线，然后对完整图像以及四个象限中的每个象限进行相似性统计分析，可以准确描述种子形状。结果显示亚种之间的形态差异。亚种种子。红豆属植物的种子形态多样性高于亚属植物。spinosa。这可能表明C. subsp的原始性。红豆属种子，与非特化有关。讨论了这两个亚种在进化过程中的生态策略。

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来源期刊

Acta Biologica Cracoviensia Series Botanica 生物-植物科学

CiteScore

3.00

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： ACTA BIOLOGICA CRACOVIENSIA Series Botanica is an English-language journal founded in 1958, devoted to plant anatomy and morphology, cytology, genetics, embryology, tissue culture, physiology, biochemistry, biosystematics, molecular phylogenetics and phylogeography, as well as phytochemistry. It is published twice a year.