潜艇与水面舰艇人员的真菌性皮肤病调查

为了解水兵的真菌性皮肤病与生活及工作环境的关系,以便有针对性地做好舰艇部队的真菌性皮肤病的健康宣教及防治工作,笔者于2008年6～7月对某部潜艇与水面舰艇人员真菌性皮肤病进行调查并对结果进行对比分析,现将结果报告如下。     

诱发小麦花药愈伤组织及其再生植株抗盐性变异的研究

不同基因型小麦花药愈伤组织对化学诱变剂的敏感性不同。选用对诱变剂敏感的类型,经EMS(甲基磺酸乙酯)诱变可以产生耐盐变异。实验获得的耐盐变异株, 离开盐胁迫3代后,经盐池鉴定后代中有52.9%的品系达到一级耐盐,表现了一定的遗传稳定性。耐盐品系的结实率也逐渐得到恢复,达到92.4%。利用其高代材料进行耐盐性的遗传分析结果表明,小麦的耐盐性不仅受核基因的控制,也受细胞质因子的影响。经酸性聚丙烯酰胺凝胶电泳分析,发现耐盐突变体特有的Rf值为0.19的醇溶蛋白能稳定遗传。 Abstract:The study discovered that the sensibilities of anther calli in different wheat genetypes to chemical mutagenic agent were different.The mutation-sensitive type might generate salt-tolerant variation after mutagenizing with EMS.The fourth generation of salt-tolerant plants which were planted for three generations in usual soil expressed tolerance stability after planting in the salt pond of a 0.45% salt concentration,52.9% of the lines in the offspring belonged to first grade of salt-tolerance,showing that the salt-tolerant variant had a certain stability.The fertility of salt-tolerant lines was gradually recovered and reached 92.4%.The high generation materials were used for genetic analysis of the salt-tolerance.The results indicated that the wheat salt-tolerant trait is not only controlled by nuclear gene,but also effected by cytoplasmic factor.In addition,A-PAGE(Acid-Polyacrylamide gel electrophoresis)discovered that the salt-resistant mutant had a unique gliadin band with a Rf value of 0.19,and that this unique band was stable inherited.     

基于叶片生理指标的小麦芽期耐盐性评价

土壤盐渍化严重影响小麦生产,提高小麦耐盐性是应对土壤盐渍化的主要生物途径之一.小麦芽期亦是对盐分较为敏感的时期,小麦芽期耐盐性的强弱对盐碱地小麦种植至关重要.为探讨利用叶片生理指标进行小麦芽期耐盐性评价的可行性,该文以沧麦6005及其73个叠氮化钠诱变家系为试验材料,在超纯水和40％人工海水条件下,对芽期叶片中脯氨酸、...