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在本试验中,用了对鉴别寄主洛夫林10有毒力的菌株8个和对它无毒力的菌株3个,分别对叶锈菌的8个鉴别寄主作了周年的重复鉴定试验,观察环境条件对鉴别寄主对叶锈菌的反应的影响。在8个鉴别寄主中,只有丰产3号和洛夫林10号在不同条件下对不同菌株的反应不同。丰产3在3—10月都表现为感病,但在11月—1月,在短日照,低温(12.4—14.4℃和弱光照(4069.6—7658Lux)情况下表现为抗病,因而小种60被鉴定为20。洛夫林10与菌株79—15—1结合,在1—2月,在短日照,低温(12.9—15.3℃)和光照7132.2—9448.3Lux情况下表现为感病。在5—9月,在长日照,高温(16.5—25℃)和半遮阴的光照(4566.6—9419.5Lux)下则表现为抗病,小种61相应地被鉴定为60。但洛夫林10与其他6个有相同毒性公式的菌株结合,则在5～9月却表现为感病。因此洛夫林10在不同条件下表现为抗病或感病,决定与不同菌株相结合。在本试验中也观察到具有相同毒性公式的菌株其致病性并不相同。也观察到来自同一菌株的不同单孢子堆的夏孢子所繁殖的培养物的致病性也可以不同。
In this experiment, 8 virulent strains of virulent host Lovrin 10 and 3 strains of avirulent virulent strains were used in this experiment. Effect of Environmental Conditions on Identifying Hosts Responses to Leaf Rust. Of the eight identified hosts, only the bhumikon 3 and lovrin 10 responded differently to different strains under different conditions. High-yielding 3 showed susceptibility from March to October, but was resistant to disease in the short-day, low-temperature (12.4-14.4 ° C and low light (4069.6-7658 Lux) range from November to January, so race 60 Was identified as 20. Lovrin 10 binds to strain 79-15-1 and appears to be susceptible in the short sun, low temperature (12.9-15.3 ° C) and light 7132.2-9448.3Lux from January to February, September, resistant to disease in long sunlight, high temperature (16.5-25 ° C) and semi-shaded illumination (4566.6-9419.5 Lux), race 61 correspondingly identified as 60. However, Lovrin 10 The other 6 strains with the same toxicity formula combined showed susceptibility from May to September, so Lovrin 10 showed disease resistance or susceptibility under different conditions and was decided to combine with different strains.In this experiment It has also been observed that strains with the same toxicity formula have different pathogenicity and it is also observed that the cultures propagated by the uredospores of different monospore stacks from the same strain may also differ in their pathogenicity.