Zheng Kun, Zhao Fu-Geng, Zhang Qian, Qin Pei
School of Life Science, Nanjing University, Nanjing, China.
Ying Yong Sheng Tai Xue Bao. 2009 Aug;20(8):1863-7.
Using Phragmites australis litter as test material, two kinds of its mother liquid, i. e., water extract and decomposed products, were obtained by the methods of solution extraction and anaerobic decomposition. The two liquids with concentration 100% and 25% were used to treat the seeds and seedlings of Spartina alterniflora and the endemic beneficial fungi (Mortierella sp.) of S. alterniflora under 5 per thousand and 10 per thousand salinity, aimed to study the effects of different salinity on the germination and growth of S. alterniflora and the growth of the fungi. Salt stress promoted the seed germination and young root growth of Spartina alterniflora as well as the growth of Mortierella sp. significantly (P<0.05). The water extracts promoted the germination and growth of Spartina alterniflora and the growth of Mortierella sp. when the salinity was 10%o, but the promotion effect disappeared when the salinity was reduced to 5 per thousand. The decomposed products of Phragmites australis restrained the germination of Spartina alterniflora significantly (P<0.05) when the salinity was 5 per thousand, but promoted the growth of Mortierella sp. significantly (P<0.05) when the salinity was 10 per thousand. Under the two salinities, the decomposed products restrained the growth of Spartina alterniflora seedlings and young roots significantly (P<0.05).
以芦苇凋落物为试验材料，通过溶液浸提和厌氧分解的方法获得其两种母液，即水浸提液和分解产物。将浓度为100%和25%的两种母液用于处理互花米草种子和幼苗以及互花米草的内生有益真菌（被孢霉属），盐度分别为5‰和10‰，旨在研究不同盐度对互花米草种子萌发和生长以及真菌生长的影响。盐胁迫显著促进了互花米草种子萌发和幼根生长以及被孢霉属真菌的生长（P<0.05）。当盐度为10‰时，水浸提液促进了互花米草种子萌发和生长以及被孢霉属真菌的生长，但当盐度降至5‰时，促进作用消失。当盐度为5‰时，芦苇分解产物显著抑制互花米草种子萌发（P<0.05），但当盐度为10‰时，显著促进被孢霉属真菌的生长（P<0.05）。在两种盐度下，分解产物均显著抑制互花米草幼苗和幼根的生长（P<0.05）。
