Effects of Achnatherum inebrians infected with Neotyphodium endophyte on accompanying species of Stipa capillata and Poa sphondylodes
Drunken horse grass (Achnatherum inebrians), an intoxicating grass in native grasslands of Northwest China, often grows in conjunction with Stipa capillata and Poa sphondylodes. Competitive interactions between endophyte infected (E+) A, inebrians and endophyte free (E-) A. inebrians with S. capillata and P. sphondylodes were investigated. E+ A. inebrians had a significant inhibition effect on percentage seed germination and seedling growth (P<0. 05), which declined significantly by 17. 1 %, 13. 6%, respectively. Similarly, seedling length declined 23. 2% and by 16. 3%; E+ plants had significant inhibition effects on tiller heights of S. capillata and P. sphondylodes from the first week after germination (P<0. 05) and on tiller numbers and total biomass (P<0. 05). E- A. inebrians had no significant effects on seed germination, seedling growth, tiller height, tiller number or total biomass (P>0. 05). S. capillata and P. sphondylodes had no significant effects on A. inebrians. In summary, E+ A. inebrians showed significant antagonism to S. capil-lata and P. sphondylodes, but E- A. inebrians had no significant effects on the other two grasses.
国家科技期刊平台
NSTL
万方数据
维普
