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外源赤霉素处理对洋葱(Allium cepa L.)鳞茎分裂及形态变异的调控机制研究
为解决洋葱鳞茎分裂影响商品品质的产业难题,日本宇都宫大学团队通过11个品种对比实验和GA3处理实验,发现短日照品种内部分裂率显著低于中长日照品种,外源GA3可诱导"Sonic"品种内部分裂并促进"Momiji No 3"外部分裂,同时导致鳞茎纺锤形变异。该研究首次揭示赤霉素 (GA)通过调控细胞伸长影响洋葱形态建成,为品质育种提供新靶点。
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