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首页> 外文期刊>International journal of plant sciences >THE IMPACT OF SOLUTE LEACHING ON THE SALT TOLERANCE DURING GERMINATION OF THE COMMON ROADSIDE PLANT DIPSACUS FULLONUM SUBSP. SYLVESTRIS (DIPSACEAE)
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THE IMPACT OF SOLUTE LEACHING ON THE SALT TOLERANCE DURING GERMINATION OF THE COMMON ROADSIDE PLANT DIPSACUS FULLONUM SUBSP. SYLVESTRIS (DIPSACEAE)

机译：普通土生植物双翅目亚种萌发过程中溶质淋溶对耐盐性的影响。丁香（DIPSACEAE）

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摘要

Variation in salt tolerance during early seedling growth has been reported in seeds of Dipsacus fullonum subsp. sylvestris. Seeds collected from roadside populations displayed a greater salt tolerance than those from old fields; this salt tolerance was highly correlated with seed sodium ion (Na~+) content. We hypothesized that the salt tolerance during germination was conferred through the deposition of Na~+ in seeds by the maternal plant. To determine the role of Na~+, we leached the soluble components from seeds before salt exposure and compared the salt tolerance of leached seeds and unleached seeds. Seeds from maternal families from the roadside showed higher salt tolerance than those from old fields. Leaching the seeds before salt exposure had no effect on the salt tolerance of old field families but caused some roadside families to lose salt tolerance. Roadside populations of D. fullonum appear to possess two distinct salt-tolerance strategies, osmotic stress tolerance conferred by seed composition and an inherent ability to tolerate highly saline conditions. This study reveals substantial diversity among D. fullonum populations in the roadside environment with variation not only in the ability to tolerate elevated salinity but also in the mechanism.
机译：已报道满枝双歧亚种的种子在幼苗早期生长过程中耐盐性的变化。樟子松。从路边种群中收集的种子比从旧田里收获的种子具有更高的耐盐性。这种耐盐性与种子钠离子（Na〜+）含量高度相关。我们假设母本植物通过种子中Na〜+的沉积赋予了发芽过程中的耐盐性。为了确定Na〜+的作用，我们在盐接触前从种子中浸出了可溶性成分，并比较了浸出种子和未浸出种子的耐盐性。来自路旁的母亲家庭的种子显示出比旧田更高的耐盐性。盐接触前浸种对老田间家庭的耐盐性没有影响，但会使一些路边家庭失去耐盐性。 D. fullonum的路旁种群似乎具有两种不同的耐盐策略，即种子成分赋予的渗透胁迫耐性和耐高盐条件的固有能力。这项研究揭示了路边环境中富勒氏菌种群之间的巨大差异，不仅在耐受盐分升高的能力上存在差异，而且在机理上也存在差异。

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