Thomson B D, Grove T S, Malajczuk N, Hardy G E St J
CSIRO Division of Forestry, Private Bag, P.O. Wembley, W.A. 6014, Australia.
Bunnings Treefarms, P.O. Box 444, Manjimup, W.A. 6258, Australia.
New Phytol. 1994 Mar;126(3):517-524. doi: 10.1111/j.1469-8137.1994.tb04250.x.
Forty-seven different isolates of ectomycorrhizal fungi, from the different genera, were screened for their effectiveness in increasing the growth of Eucalyptus globulin La hi 11. where supply of P is deficient. Plants were grown in a P-delicient sand, in pots, in a temperature- control led glasshouse. Seedlings we re harvested 6-S and K7 d after planting, and were assessed for dry matter production and mywirrhizal colonization. Selected treatments were also assessed for P concentrations in the plant and hyphal development in the soil. Dry weights of inoculated plants ranged from 50 to 350% of the dry Weights of uninoculated plants. Growth increases in response to ectorriycorrhizal inoculation corresponded with increased P uptake by the plant.'Early'colonizing fungal species (Descolea maculata, Hebeloma westraliens, Laccaria laccata and Pisolithus tinctorius) were generally more effective in increasing plant growth than'late'colonizing species (Cortinarius spp. and Hyutenmgium spp.), although there was also variation in effectiveness among isolates of the same fungal species. Plant dry weights were positively correlated (r = 0·79-0·84) with the length of colonized root, indicating that fungi which colonized roots extensively were The most effective in increasing plant growth. For some fungi, however, plant growth responses to inoculation were not related to colonized root length. These responses could not.be related to the development of hyphae in soil by the mycorrhizal fungi.
对来自不同属的47种外生菌根真菌分离株进行了筛选，以评估它们在磷供应不足的情况下促进巨桉La hi 11生长的有效性。将植物种植在缺磷的沙子中，置于花盆里，在温度可控的温室中培养。种植后68天和77天收获幼苗，并对其干物质产量和菌根定殖情况进行评估。还对选定的处理组进行了植物磷浓度和土壤中菌丝发育情况的评估。接种植物的干重为未接种植物干重的50%至350%。外生菌根接种后生长的增加与植物磷吸收的增加相对应。“早期”定殖的真菌物种（黄斑硬皮马勃、西澳丝膜菌、彩色豆马勃和彩色马勃）通常比“晚期”定殖的物种（丝膜菌属和厚环粘盖牛肝菌属）在促进植物生长方面更有效，尽管同一真菌物种的不同分离株在有效性上也存在差异。植物干重与定殖根的长度呈正相关（r = 0·79 - 0·84），这表明广泛定殖根的真菌在促进植物生长方面最有效。然而，对于一些真菌来说，接种后植物的生长反应与定殖根长度无关。这些反应与菌根真菌在土壤中菌丝的发育无关。
