河南农业科学Issue(6)：90-95,6.
柠条锦鸡儿凋落物提取液对自身种子萌发和幼苗生长的影响
Effects of Caragana korshinskii Litter Aqueous Extract on Its Seed Germination and Seedling Growth
摘要
Abstract
In order to study the effects of Caragana korshinskii litter aqueous extract on its seed germina-tion and seedling growth,the selected indexes of seed germination and seedling growth of C. korshinskii were measured under treatments of its litter aqueous extracts from 0 . 05 to 0 . 30 g/mL with incubation method. The results showed that the indexes of seed germination and seedling growth were significantly in-hibited by the higher C. korshinskii litter aqueous extract. When the concentration of aqueous extract was 0. 05 g/mL,the indexes of seed germination suffered no significant influence compared with CK ( P >0. 05). Seed germination rate,germination potential,germination index,and radicle length were sharply reduced when the concentration of aqueous extract was higher than 0. 05 g/mL(P<0. 05). At the same time,the seed germination time was delayed,but the seedling fresh weight and dry weight did not be af-fected significantly(P >0. 05). The higher concentration of C. korshinskii litter aqueous extract(0. 30 g/mL) led to the seed deactivation. Correlation analysis showed that the content of malondialdehyde and membrane permeability had a significant linear positive correlation with the aqueous extract concentration (P<0. 001). The content of chlorophyll, root activity(TTC),the activity of protective enzyme(POD, SOD,CAT) and non-protective enzyme(PPO,PAL) had a significant linear negative correlation with aqueous extract concentration ( P <0 . 001 ) . Comprehensive analysis indicated that the aqueous extract from the litter of C. korshinskii had autotoxicity on its seed germination and seedling growth.关键词
柠条锦鸡儿/凋落物/提取液/种子萌发/幼苗生长/自毒作用Key words
Caragana korshinskii/litter/aqueous extract/seed germination/seedling growth/autotoxicity分类
农业科技引用本文复制引用
曾淼..柠条锦鸡儿凋落物提取液对自身种子萌发和幼苗生长的影响[J].河南农业科学,2015,(6):90-95,6.基金项目
阿坝师范高等专科学校青年基金项目(ASC14-31) （ASC14-31）
