种子繁殖的白花蛇舌草和清水蛇舌草的物候和形态特征的变异

Diversity Pub Date : 2024-08-02 DOI:10.3390/d16080466
Noluthando Nonjabulo Nkosi, Godfrey Elijah Zharare, Clemence Zimudzi, Brita Stedje, Nontuthuko Rosemary Ntuli
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摘要

Laggera Sch. Bip. Ex.Ex.Benth. 和 Hook 种之间的物候和形态变异研究十分有限,尽管该属植物具有药用价值。因此,本研究旨在记录 Laggera alata 和 Laggera crispata 栽培种群从幼苗到成熟期的物候和形态变化。这些形态被分为小头状花序的 Laggera alata(LA-SC)、大头状花序的 Laggera alata(LA-BC)、南非的 Laggera crispata(LC-SA)和津巴布韦的 Laggera crispata(LC-ZIM)。种子在培养皿中发芽,移栽到插盘中,60 天后移栽到田间地头。当观察到至少有一株植物发生物候变化时,就将其记录下来。每月对每种 Laggera 形态的五株植物进行 12 个质量性状和 4 个形态性状的测量。数据分析采用了方差分析和 Tukey's 诚实显著差异检验(p < 0.05)。结果表明,在清脆木和白花蛇舌草内部和之间,物候、质量性状、叶片性状、株高和茎直径都存在明显差异。叶片大小和单株叶片数量等形态特征被认为是区分 L. alata 形态的关键描述指标。这些研究结果为将白花蛇舌草引入农业系统用于药用和商业目的奠定了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Variation in Phenology and Morphological Traits of Seed-Propagated Laggera alata and Laggera crispata Forms
The phenological and morphological variation studies among forms of Laggera Sch. Bip. Ex. Benth. and Hook species are limited, despite the medicinal use of the genus. Therefore, this study aimed to document phenology and morphological variation in cultivated populations of Laggera alata and Laggera crispata forms from seedling to maturity. The forms were categorized as Laggera alata with a small capitulum (LA-SC), Laggera alata with a large capitulum (LA-BC), Laggera crispata from South Africa (LC-SA), and Laggera crispata from Zimbabwe (LC-ZIM). Seeds were germinated in Petri dishes, transplanted to plug trays, and later to field plots at 60 days. Phenological events were recorded when observed in at least one plant. Twelve qualitative and four morphometric traits were measured monthly on five plants per Laggera form. Analysis of variance and Tukey’s Honestly Significant Difference test (p < 0.05) were used for data analysis. Results indicated significant variation in phenology, qualitative traits, leaf traits, plant height, and stem diameter both within and between L. crispata and L. alata forms. Morphometric traits, such as leaf size and the number of leaves per plant, were identified as key descriptors for differentiating L. alata forms. These findings provide a foundation for the introduction of Laggera forms into farming systems for medicinal and commercial purposes.
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