Spinous-Process
发表于 2025-3-26 23:13:28
Macmillan Publishers Limited 1977
无政府主义者
发表于 2025-3-27 03:58:02
Diseases and Injuries of SeedThe fact that seeds are both vehicles and victims of disease calls for some clarification of concepts. So do the facts that seeds, without being diseased, may be vehicles of pathogens, as well as they may be victims of detriments other than disease, such as insect damage.
特征
发表于 2025-3-27 08:59:21
Seed-borne VirusesAlthough most viruses are not seed-borne the number of viruses for which seed transmission has been recognised is steadily growing, and in some genera within the phanerogams seed transmission is rather frequent. This holds true for certain genera of leguminous plants (Leguminosae), stone fruits (Amygdalaceae) and composites (Compositae).
禁止
发表于 2025-3-27 12:27:37
Seed-borne BacteriaBacteria are commonly carried on seed; potentially, any bacterial plant pathogen may probably be seed-transmitted.
Density
发表于 2025-3-27 16:08:13
Types of Host in Relation to Types of PathogenThere are considerable differences between seeds of different kinds in regard to frequency of transmission of any one pathogen, and in the number of different pathogens so transmitted. Seed-borne pathogens and transmission are common in cereals and legumes but relatively infrequent in forestry seed and many flower seeds.
FLAG
发表于 2025-3-27 21:24:16
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Fantasy
发表于 2025-3-27 22:16:21
Environmental Physicochemical Factors Affecting Establishment and Course of DiseaseA discussion of the conditions leading to inception and establishment of diseases through transmitted seed falls naturally into the following two items:
领巾
发表于 2025-3-28 02:59:38
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捏造
发表于 2025-3-28 06:53:25
Seed-borne Fungiome are easily detected, others do occur but cannot be revealed by conventional testing procedures. The extent to which fungi occur in seeds depends on their capability to survive under the extreme dry conditions of seed as a carrier.
急急忙忙
发表于 2025-3-28 14:08:49
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