人工诱导珠芽黄魔芋开花结子研究

Studies on artificial induction blooming and seeding of bulbil-yellow konjac

以珠芽黄魔芋(Amorphophallus konjac K.Koch)2个量级球茎为供试材料,采用喷施不同浓度梯度生长素和赤霉素等体积混合溶液,以及光照、自然阴干、花芽分化后和分化前埋入基质中的技术手段,探究人工诱导珠芽黄魔芋开花结子的方法。结果表明,2.0 kg及以上球茎的开花率均要高于1.0~1.5 kg的球茎,最高的开花率达93.33%;2.0 kg及以上球茎在光照处理条件下,生长调节剂浓度配比为1∶1 200,花芽分化后埋入基质中的结子率最高,达81.11%;2.0 kg及以上球茎在自然阴干处理条件下,生长调节剂浓度配比为1∶800,花芽分化后埋入基质中的种子数量最多,达4 442粒,繁殖倍数将近300倍。2.0 kg及以上的球茎,生长调节剂浓度配比为1∶400~1∶1 200,花芽分化后埋入基质中的方法可在生产实践中推广应用。

Two orders of magnitude corms of bulbil-yellow konjac(Amorphophallus konjac K.Koch) were used as test materials.The method of artificial induction blooming and seeding of bulbil-yellow konjac were studied through technical means that spraying mixed solution of gradient auxin and gibberellin at different coentrations,light treatment,drying in natural shade,embedding medium after and before flower bud differentiation.The results showed that the 2.0 kilogram and above corm of abloom rate is higher than 1.0~1.5 kilogram corm,the highest abloom rate reach 93.33%.The 2.0 kilogram and above corm of seed setting rate reach 81.11%,that is the highest with condition of light treatment,hormone ratio is 1∶1 200,and embedding medium after flower bud differentiation.The 2.0 kilogram and above corm of seed amount is the most,there are4 442 seeds,and the breeding multiple is nearly 300 times,that is in condition of drying in natural shade,hormone ratio is1 ∶800,and embedding medium after flower bud differentiation.In conclusion,the method of the 2.0 kilogram and above corm,hormone ratio is 1∶400~1∶1 200,and embedding medium after flower bud differentiation,is worth popularizing and applying in production practice.