红树植物秋茄胚轴主要性状及其贮藏方法的研究

Studies on the Primary Character and Storage Method of Mangrove Kandelia candel Hypocotyl

对红树植物秋茄胚轴的品质特征、安全含水量和平衡含水量、“感光休眠”现象作了详细研究，并用沙埋、锯末保湿、海水浸泡、低温和室内干燥５种方法贮藏胚轴。结果表明，秋前胚轴自然失水过程表现为快、慢、快的进程，当４５ｄ含水量降为３５．１％时，全部胚轴丧失活力。胚轴临界安全含水量为５１．２％，控制胚轴含水量在５５．２％～５８．３％有利于贮藏。低温（５～８℃）贮藏效果较好，贮藏６个月后胚轴成活率仍可达８３．３％，其次为锯末保湿室温贮藏，贮藏１０５ｄ成活率为７０％。海水浸泡、沙埋和室内干燥仅适于胚轴的暂时（１５ｄ内）存放。

This paper deals with quality character,safe and equilibrium moisture con-tent equilibrium moisture content,light-inhibited germination and five storage methods ofKandelia candel hypocotyl.The results showed that process of water losing of the hypocotylwas fast,slow and fast;When moisture content reduced to 35.1%,all of the hypocotylswould lose their viability.The critical safe moisture content was51.2%,It would befavourable for hypocotyl storage when the moisture content of hypocotyl could be controlledwithin55.2%～58.3%.he lower temperature(5～8℃)storage method was the best one,by which the survival rate of hypocotyl could reach 83.3%after stored for six months,thesawdust storage was the second,by which the survive rate of hypocotyl was 70%after storedfor 105 days;immersed-in-sea water,buried-in-sand and natural dry storage methods wereonly suitable for temporary storage(within 15 days)of collected hypocotyls.