CAJ | 학술논문

　　为研究镉胁迫下不同品种烟草积累和忍耐镉的差异及机制问题，以烟草品种‘RG17’、‘贵烟11号’、‘Xanthi’为试验材料，采用土培试验方法对不同品种烟草镉化学形态分布特征进行了研究。结果表明，烟草根、茎、叶镉的各形态含量随土壤镉浓度的增加而增加，根部FHAC分配比率最高，占绝对优势，茎FHAC降低，FNaCl增加，而叶片FNaCl分配比率最高，占绝对优势，且随着镉浓度的加大，根、茎、叶镉的各形态分配比率有接近的趋势。同样各形态分配比率因品种而异，根部‘Xanthi’FHAC分配比率最高，而FW、FNaCl分配比率低；叶内FNaCl分配比率‘Xanthi’高于其他品种，而FW分配比率低，随着镉浓度的增加，这种趋势更加明显。推断高积累型烟草根内镉形成难溶于水的磷酸盐有利于其对镉的积累，而与蛋白质络合，从细胞质转移到液泡可能是烟草耐性品种忍耐镉的主要机制之一。
　　위연구력협박하불동품충연초적루화인내력적차이급궤제문제，이연초품충‘RG17’、‘귀연11호’、‘Xanthi’위시험재료，채용토배시험방법대불동품충연초력화학형태분포특정진행료연구。결과표명，연초근、경、협력적각형태함량수토양력농도적증가이증가，근부FHAC분배비솔최고，점절대우세，경FHAC강저，FNaCl증가，이협편FNaCl분배비솔최고，점절대우세，차수착력농도적가대，근、경、협력적각형태분배비솔유접근적추세。동양각형태분배비솔인품충이이，근부‘Xanthi’FHAC분배비솔최고，이FW、FNaCl분배비솔저；협내FNaCl분배비솔‘Xanthi’고우기타품충，이FW분배비솔저，수착력농도적증가，저충추세경가명현。추단고적루형연초근내력형성난용우수적린산염유리우기대력적적루，이여단백질락합，종세포질전이도액포가능시연초내성품충인내력적주요궤제지일。
To investigate the mechanisms of different tobacco accumulating and tolerating Cd, Pot experiment was carried out to study the distribute characteristic of Cd chemical forms among different tobacco cultivars in‘RG17’,‘Guiyan 11#’and‘Xanthi’. The Cd forms in plants showed that the FHAC proportion was highest in root, FHAC proportion decreased and FNaCl increased in stem, while the FNaCl proportion became highest in leaf, which showed the different mechanisms of cadmium tolerance in the roots, stems and leaves of tobacco. With the increase of Cd in soil, the content of every form of Cd also increased. The FHAC proportion in root of‘Xanthi’was higher than that of low accumulators and the FW, FNaCl proportion was lower than that of low accumulators. The FNaCl proportion in leaf of‘Xanthi’was higher and Fw was lower than that of sensitive accumulators. It implied that the complex of cadmium and protein might be the reason why some tobacco cultivars were tolerant to cadmium. The complex of cadmium and protein was transported from cytoplasm to vacuole, which was compartmented in the vacuole.