Tiret M, Wagner M-H, Gay L, Chenel E, Dupont A, Falentin C, Maillet L, Gavory F, Labadie K, Ducournau S, Chèvre A-M
IGEPP, INRAE, Institut Agro Université de Rennes Le Rheu France.
GEVES, Station Nationale d'Essais de Semences Beaucouzé France.
Evol Appl. 2025 Mar 9;18(3):e70089. doi: 10.1111/eva.70089. eCollection 2025 Mar.
Elevated temperatures inhibit the germination of a concerning number of crop species. One strategy to mitigate the impact of warming temperatures is to identify and introgress adaptive genes into elite germplasm. Diversity must be sought in wild populations, coupled with an understanding of the complex pattern of adaptation across a broad range of landscapes. By investigating the landraces, wild, and feral populations of Algeria, Italy, France, Slovenia, Spain, and Tunisia, we assessed the response of germination to temperature increase in an unexplored diversity of 117 accessions of and 66 of . Our results show that both species exhibit heat tolerance to the temperature range tested, especially , with an increase in speed and uniformity of germination time, as well as an increase in germination rate as temperature increased. As for accessions, the ability to germinate under heat conditions depended on the geographical origin; in particular, southern populations showed a higher germination rate than northern populations, possibly in relation to their warmer climates of origin. These findings highlight the complex interplay between domestication, feralization, and current agronomic practices in shaping germination characteristics in species.
温度升高会抑制相当数量作物品种的发芽。减轻气温上升影响的一种策略是识别适应性基因并将其渗入优良种质中。必须在野生种群中寻找多样性，并了解广泛景观中复杂的适应模式。通过调查阿尔及利亚、意大利、法国、斯洛文尼亚、西班牙和突尼斯的地方品种、野生和野生化种群，我们评估了117份[具体物种1]种质和66份[具体物种2]种质在未探索的多样性中发芽对温度升高的反应。我们的结果表明，这两个物种在测试的温度范围内均表现出耐热性，尤其是[具体物种1]，随着温度升高，发芽时间的速度和均匀性增加，发芽率也增加。至于[具体物种1]种质，在高温条件下的发芽能力取决于地理起源；特别是，南部种群的发芽率高于北部种群，这可能与其起源地较温暖的气候有关。这些发现突出了驯化、野生化和当前农艺实践在塑造[具体物种1]发芽特性方面的复杂相互作用。
