豌豆Sparkle及其单基因突变体E107的铁锰吸收及转移效率

用豌豆Ｓｐａｒｋｌｅ及其单基因突变体Ｅ１０７进行的水培的试验表明，－Ｆｅ和＋Ｆｅ处理的Ｅ１０７幼苗以及－Ｆｅ处理的Ｓｐａｒｋｌｅ幼苗均表现出根系Ｈ＋分泌量大、根系Ｆｅ（Ⅲ）还原力强等特点，其中尤以＋Ｆｅ处理的Ｅ１０７最为突出；而十Ｆｅ处理的Ｓｐａｒｋｌｅ则无以上特点。与Ｓｐａｒｋｌｅ相比，Ｅ１０７各处理的地上部Ｆｅ、Ｍｎ合量均很高，但根部含量则相反。与Ｓｐｅｋｌｅ相比，Ｅ１０７—Ｆｅ处理表现为Ｆｅ高效，即使在＋Ｆｅ处理下，Ｅ１０７仍表现出－Ｆｅ条件下的根系生理特性，活化并还原了根际大量Ｆｅ（Ⅲ）和Ｍｎ，因而它对Ｆｅ、Ｍｎ具有较高的吸收效率，但是这些元素并不在根系中贮存，而是源源不断地运输到地上部，并在叶片中累积乃至使叶片中毒坏死，充分表现了Ｅ１０７单基因突变体对Ｆｅ、Ｍｎ也具有较高的转移效率。

Study on the Fe and Mn Use Efficiencies in the Single Gene Mutant E107 and Its Parent Sparkle of Pisum sativum

Iron Stress response of mutant E107 and its parent(cv'Sparkle') of Pisum sativum were studied in determine the root reduction activities,H excretion and Fe. Mn contents of shoots and roots under controlled conditions.Root ferric reduction activities and H excretion in E107 were higher than that in Sparkle In contrast to those in the roots,the Fe,Mn contents of shoots in E107 were significantly higher than those in Sparkle.It can be concluded from this experiment that not only the mobilization,but also the uptake and translocation of Fe and Mn in the single gene mutant E107,are very efficient as compared with those in its parent Sparkle.