Continuous measurement of stem-diameter growth response of Pinus pinea seedlings mycorrhizal with Rhizopogon roseolus and submitted to two water regimes

摘要: Linear variable differential transformer (LVDT) sensors were used to detect continuous diameter growth responses of Pinus pinea (stone pine) seedlings inoculated with the ectomycorrhizal fungus Rhizopogon roseolus. Colonised and non-colonised provided submitted different water regimes in two consecutive experiments established a controlled-temperature greenhouse module (cycle 1), an adjacent without temperature control 2). Under regular irrigation, colonised showed significantly higher than seedlings. Water-stressed no benefit from inoculation terms growth. Also, high colonisation level recovered more slowly stress A significant positive relationship between maximum daily shrinkage (amplitude stem contraction) global radiation was observed only first water-stress period cycle 1 regularly irrigated both cycles. However, due observed. The mycorrhizal at end experiment related initial level. Mycorrhizal by R. roseolus old roots maintained levels which had >50% 50% <50%, almost new root colonisation. From results obtained, it can be concluded that LVDT response plants according supply, status and, some cases, their are discussed relation predictive possibilities method for selection efficient fungi promotion plant