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A Handbook of Rice Seedborne Fungi TW Mew and P ... - IRRI books

A Handbook of Rice Seedborne Fungi TW Mew and P ... - IRRI books

A Handbook of Rice Seedborne Fungi TW Mew and P ... - IRRI books

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ContentsPrefaceVINTRODUCTION 1FUNCTIONS OF SEED HEALTH TESTING 3Cataloguing pathogens <strong>of</strong> crops 3Detection methods 3Post introduction measures 5THE MISSING LINK 6Epidemiology 6Disease <strong>and</strong> infection cycles 7Seed transmission 8Relationship between seedborne inoculum <strong>and</strong> 9disease development in the fieldInoculum level <strong>and</strong> inoculum thresholds 9Risk analysis 10Microorganisms associated with seed 11SEED HEALTH MANAGEMENT FOR CROP PRODUCTION 12IDENTIFICATION OF FUNGI DETECTED ON RICE SEED 13<strong>Seedborne</strong> fungi causing foliage diseases in rice 14Alternaria padwickii 14Bipolaris oryzae 17Cercospora janseana 21Microdochium oryzae 24Pyricularia oryzae 27<strong>Seedborne</strong> fungi causing stem, leaf sheath, <strong>and</strong> root diseases in rice 31Fusarium moniliforme 31Sarocladium oryzae 35<strong>Seedborne</strong> fungi causing grain <strong>and</strong> infloresence diseases in rice 38Curvularia sp. 38Fusarium solani 42Nigrospora sp. 44Phoma sorghina 47Pinatubo oryzae 51Tilletia barclayana 53Other fungi detected on rice seeds 57Acremoniella atra 58Acremoniella verrucosa 58Alternaria longissima 59iii

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