Seed production and dormancy in Rumex crispus. II. The effects of removal of various proportions of flowers at anthesis
Seed production and dormancy in Rumex crispus. II. The effects of removal of various proportions of flowers at anthesis
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皱叶酸模的种子生产和休眠。
DOI：
10.1139/b71-259
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发表时间：
1971
期刊：
影响因子：
--
通讯作者：
P. Cavers
中科院分区：
文献类型：
--
作者：
M. Maun;P. Cavers
与对照相比，系统地从皱纹酸模的圆锥花序上去除25%、50%和75%的花轮降低了种子和果实的每穗总产量。然而，随着更大比例的轮生被移除，每粒种子的平均重量逐渐增加。对于未经处理的植物，向分枝顶端种植的种子总是比在分枝与主轴交界处附近发现的种子轻。穗下部的种子一般比上部的种子大。在处理植株上，个体种子重量在整个穗上的变化较小。尽管所有处理的种子都一样有活力，但来自处理植株的较大种子在几种萌发制度下表现出更多的休眠。这种休眠的增加可能归因于较大种子的较厚的包被结构。
Systematic removal of 25, 50, and 75% of the flower whorls from panicles of Rumex crispus L. (curled dock) reduced the total yield per panicle of seeds and fruits in comparison to control plants. However, the mean weight per seed was progressively higher as a greater proportion of the whorls was removed.For untreated plants, seeds borne toward the tips of branches were always lighter than those found near the junctions of branches with the main rachis. Seeds from the lower portion of the panicle were generally larger than those from the upper branches. On treated plants individual seed weight became less variable over the whole panicle.Although seeds from all treatments were equally viable, the larger seeds from treated plants exhibited a greater amount of dormancy under several germination regimes. This increased dormancy might be attributed to the thicker investing structures of larger seeds.