Behaviour of a plant growth-promoting sterile fungus on agar and roots of rye-grass and wheat
作者： M.M. Dewan , K. Sivasithamparam
DOI: 10.1016/S0953-7562(89)80113-3
关键词: Lolium 、 Agronomy 、 Agar 、 Lolium rigidum 、 Potato dextrose agar 、 Exudate 、 Fungus 、 Root system 、 Incubation 、 Biology
摘要: The radial extension of a plant growth-promoting sterile red fungus (SRF) after 3 d on various agars at 25 °C was most wheat meal agar and least water agar. Maximum growth potato dextrose (PDA) 25° minimum 30°. pH optimum for PDA 5·5 4·0 both or 70 5°. At 5° the SRF produced drops exudate around fungal disk in centre plate. These appeared all treatments 20 d, with exception 4·5; between 50–60 treatments, amount exuded declining this period. More evident 7·5 50 than any other treatment. inhibited Gaeumannomyces graminis var. tritici (Ggt) colonized roots ( Triticum aestivum cv. Gamenya) more aggressively those rye-grass Lolium rigidum Wimmera) sterilized non-sterilized soil. Ggt had no effect progression ryegrass when they were co-infested soils. entire root system crown regions hosts 4 incubation soil treatments. extent colonization by SRF, whether alone Ggt, protected from since plants died
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