Seed heteromorphism in carolina dayflower (Commelina caroliniana Walter)
Seed heteromorphism in carolina dayflower (Commelina caroliniana Walter)
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卡罗莱纳州白花菜（Commelina caroliniana Walter）种子异形性
DOI：
10.1111/wbm.12107
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Yoshiki Kawano
中科院分区：
文献类型：
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作者：
M. Matsuo;T. Sakai;Yoshiki Kawano
Carolina向日葵(Commelina Caroliniana Walter)，危害大豆(Glyine max L.)日本九州岛北部的田地具有种子异形性，即产生两种类型的种子：果皮和裸露。然而，目前还没有关于它们萌发行为的信息。本研究的目的是了解卡罗莱纳向日葵种子的萌发特性，并阐明果皮和裸露种子之间的差异。在种子形状上，果皮种子显著长于裸露种子，宽度和厚度无显著差异。果皮和裸露种子均能在>；20℃条件下萌发，其中以30℃条件下播种后7 d的累积发芽率最高，达90%。光照对种子萌发无影响。种子在低温下干藏、湿藏或水下贮藏7 d后的累积发芽率显著低于常温贮藏后的累积发芽率，表明种子贮藏期间较高的温度和氧气浓度影响了卡罗莱纳向日葵的萌发。但果皮与裸露种子的萌发行为无明显差异。
Carolina dayflower (Commelina caroliniana Walter), infesting soybean (Glycine max L.) fields on northern Kyushu Island, Japan, has seed heteromorphism; that is, it produces two types of seeds: pericarp and naked. However, there is no information about their germination behavior. The purpose of this study was to understand the germination characteristics of carolina dayflower seeds and to clarify the difference between the pericarp and naked seeds. On the shape of the seed, the pericarp seeds were significantly longer than the naked ones, with no significant difference in width or thickness. Both the pericarp and the naked seeds could germinate at >20°C, and at 30°C, their cumulative germination rate at 7 days after sowing was the highest, at >90%. Light had no effect on seed germination. The cumulative germination rate after 7 days, when the seeds had been stored dry, wet or under water at a low temperature, was significantly lower than after storage at room temperature, suggesting that a higher temperature and concentration of oxygen during the seed-storage period affects the germination of carolina dayflower. However, there was no difference in the germination behavior between the pericarp and the naked seeds.