Department of Veterinary Management of Animal Resources, Faculty of Veterinary Medicine, FARAH Center, University of Liège, 4000, Liège, Belgium.
Regional Center of Agricultural Research of Tangier, National Institute of Agricultural Research, 10090, Rabat, Morocco.
Sci Rep. 2023 Aug 16;13(1):13300. doi: 10.1038/s41598-023-40148-y.
The present work was part of assessing wild genetic plant resources of forage interest in Northern Morocco and aimed to study the agro-morphology and nutritional value of Sulla flexuosa (L.) Medik. (Hedysarum flexuosum L.) ecotypes. The seeds of twenty-one wild S. flexuosa (L.) Medik. ecotypes were collected from 21 sites. The edaphic and climatic characteristics of the collection sites were studied and testified to the remarkable adaptability of S. flexuosa (L.) Medik. These 21 ecotypes were cultivated in three complete randomized blocks design for two consecutive years. Statistical analysis showed substantial variability between the collected ecotypes. Principal component analysis and heatmap analysis allowed to distinguish four groups of ecotypes mainly based on nutritional parameters (fiber content and digestibility), forage production (dry matter yield, number of leaves per plant, and total number of branches), and reproduction (number of inflorescences per plant and, weight of thousand seeds and seeds per plant). Furthermore, the present study pointed out the value of ecotype 1, which was dual purpose with its high productivity, nutritional value, and reproductive parameters. Ecotype 4 was also highlighted as having late flowering but intermediate productivity, which can be used mainly for haymaking as the drying period could coincide with the last rainfall in the region.
本研究旨在评估摩洛哥北部具有饲料价值的野生遗传植物资源，研究了 21 种野生弯茎黄芪（L.）Medik.（Hedysarum flexuosum L.）生态型的农艺形态和营养价值。从 21 个地点收集了 21 个野生弯茎黄芪（L.）Medik.生态型的种子。研究了采集地点的土壤和气候特征，证明了弯茎黄芪（L.）Medik.的显著适应性。这 21 个生态型在三个完全随机区组设计中连续两年种植。统计分析表明，收集到的生态型之间存在很大的变异性。主成分分析和热图分析可以区分四个生态型组，主要基于营养参数（纤维含量和消化率）、饲料产量（干物质产量、每株叶片数和总分枝数）和繁殖（每株花序数、千粒重和每株种子数）。此外，本研究指出了生态型 1 的价值，它具有高生产力、营养价值和繁殖参数，是两用的。生态型 4 也因其花期晚但生产力中等而受到关注，主要可用于干草制作，因为干燥期可以与该地区的最后一次降雨相吻合。
