登录新浪财经APP 搜索【信披】查看更多考评等级 炒股就看金麒麟分析师研报，权威，专业，及时，全面，助您挖掘潜力主题机会！ 来源：价值线 天风证券周K线走势 图，截至12月8日 近日，天风证券（维权）（601162）与昔日大股东同日收到证监会相连编号的立案告知书，其实这场风 暴早有征兆：从主动投案、曾被业内称为"发审委一姐"的前证监会官员郭旭东，到失联被查、有"债券 女王"之称的天风证券前常务副总裁翟晨曦，再到年初已被留置的前董事长余磊。 一系列人物或主动或被动接受调查，都和一家民营公司有关：武汉当代集团。 把这么多人拖进泥潭的武汉当代集团，从一出生起便非同寻常，创始人不寻常，起家业务更不寻常：它 发家于"小便"生意。 价值线获悉，武汉当代集团发达之后，请了中央部委司局级干部为其服务，成为其业绩更进一步的"基 础"。 虽一度达到千亿版图，但当代集团最终仍帝国坍塌。多年来，涉及不少高官权贵的谜团也正陆续浮出水 面…… 天风证券及原股东被立案调查 11月29日，天风证券发布公告，公司于2025年11月28日收到中国证监会下发的《立案告知书》（编号： 证监立案字【0052025018】号）。因涉嫌信息披露违法违规、 ...

Core Viewpoint - The article addresses misconceptions surrounding seedless watermelons, particularly the false claims that they are treated with contraceptive drugs and contain harmful hormones. It clarifies the scientific methods used in breeding seedless watermelons and emphasizes the safety of these practices [9][11][25]. Group 1: Misconceptions and Clarifications - The rumor linking seedless watermelons to contraceptive drugs likely stems from misunderstandings about the term "seedless" and the breeding process [11]. - Experts from the Chinese Academy of Agricultural Sciences confirm that seedless fruits are not related to contraceptive drugs, and the use of plant growth regulators like gibberellins is a common practice in their production [11][19]. - Contraceptive drugs, being animal hormones, cannot be recognized or utilized by plants, making the idea of treating watermelons with such drugs ineffective [13][19]. Group 2: Breeding Techniques - The breeding of seedless watermelons involves the use of colchicine, a plant alkaloid that disrupts normal cell division, resulting in the creation of tetraploid watermelons [14][18]. - Tetraploid watermelons are then crossed with diploid watermelons to produce triploid watermelons, which are the seedless varieties sold in markets [19][23]. - The inability of triploid watermelons to produce seeds is due to their chromosomal structure, which prevents normal pairing and separation during reproduction [23]. Group 3: Advances in Breeding Technology - A significant breakthrough in seedless watermelon breeding was reported by Professor Yuan Li's team, which developed a self-replicating diploid seedless watermelon induction system, enhancing breeding efficiency and variety [25][27]. - This new system allows for the cultivation of seedless watermelons without the constraints of traditional breeding methods, leading to improved sweetness, longer shelf life, and better disease resistance [27]. - The advancements in this breeding technology not only benefit seedless watermelons but also open new avenues for breeding other seedless fruit crops [27].