不同茸毛性状辣椒干旱胁迫的相关生理指标分析

以不同茸毛性状的3个近等基因辣椒系为试材,利用盆栽试验,研究干旱胁迫处理对不同茸毛性状辣椒植株的生理指标的影响,并测定了植株总生物量。结果表明,与对照相比,干旱胁迫下不同茸毛性状辣椒叶片的游离脯氨酸含量显著增加,以多茸毛变异系增加量最多,为17.98倍;叶片丙二醛含量显著增加,以多茸毛变异系的增加量最少,为29.13%;超氧化物歧化酶和过氧化物酶活性都增加,增加量以多茸毛变异系最多。3个近等基因系的植株总生物量降低率差异显著,以多茸毛变异系最少,为29.98%。

Analysis on Related Physiological Indexes of Pepper with Different Hair Characteristics under Drought Stress

  Taking three closely relative pepper（Capsicum annuum L.）gene strains with different hair characteristics as test materials, pot experiment was conducted to study the effect of drought stress on physiological indexes of pepper with different degree of hairs. The total biomass was also determined. The result showed, contrast to the check, the contents of free proline（Pro）of pepper with different degree of hairs under drought stress was significantly increased. The proline contents of more hairs strains increased 17.98 times, which was higher than that of the others. The malomdiadehyde contents of pepper leaves was significantly increased, the increment of more hairs pepper strains was 29.13 %, which was the least. The activities of superoxide dismutas（SOD）and peroxidase（ POD）were increased obviously. The increment of the more hairs pepper strains were higher than that of the other strains. The reduced rate of the total plant biomass of these 3 closely related pepper gene strains under drought stress was significantly different. The reduced rate of more hairs pepper strains was 29.98 %, which was the least.