Simulated warming shifts the flowering phenology and sexual reproduction of Cardamine hirsuta under different Planting densities.
Simulated warming shifts the flowering phenology and sexual reproduction of Cardamine hirsuta under different Planting densities.
复制标题
模拟变暖改变不同种植密度下毛碎米花的开花物候和有性繁殖
DOI：
10.1038/srep27835
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发表时间：
2016-06-14
影响因子：
4.6
通讯作者：
Wang N
中科院分区：
文献类型：
--
作者：
Cao Y;Xiao Y;Huang H;Xu J;Hu W;Wang N
气候变暖改变了植物的生殖物候，从而显著降低了密度依赖型和非密度依赖型植物的生殖能力。但气候变暖对不同种植密度下植物开花物候和生殖分配的影响尚不清楚。在这里，我们评估的影响，模拟变暖的开花物候和有性繁殖的短命草本植物碎米荠四个密度下。结果表明，模拟升温使花期平均推迟3.6 d，但提前1 d左右结束，表明气候变暖缩短了花期。模拟增温处理也显著增加了盛花期的开花幅度，形成了群体开花的格局。气候变暖显著增加了果实、种子和种子的重量，但降低了果实长度和有性生殖分配。最高密度下，开花期缩短，果实、种子和种子的重量减少，有性生殖分配减少。
Climate warming can shift the reproductive phenology of plant, and hence dramatically reduced the reproductive capacity both of density-dependent and -independent plant species. But it is still unclear how climate warming affects flowering phenology and reproductive allocation of plant under different planting densities. Here, we assessed the impact of simulated warming on flowering phenology and sexual reproduction in the ephemeral herb Cardamine hirsuta under four densities. We found that simulated warming delayed the onset of flowering averagely for 3.6 days but preceded the end of flowering for about 1 day, which indicated climate warming shortened the duration of the flowering. And the flowering amplitude in the peak flowering day also dramatically increased in the simulated warming treatment, which caused a mass-flowering pattern. Climate warming significantly increased the weights of the fruits, seeds and seed, but reduced fruit length and sexual reproductive allocation under all the four densities. The duration of flowering was shortened and the weights of the fruits, seeds and seed, and sexual reproductive allocation were reduced under The highest density.