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首页> 外文期刊>Scientific Research and Essays >Identification of genotypes resistant to blast, bacterial leaf blight, sheath blight and tungro and efficacy of seed treating fungicides against blast disease of rice
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Identification of genotypes resistant to blast, bacterial leaf blight, sheath blight and tungro and efficacy of seed treating fungicides against blast disease of rice

机译：鉴定抗稻瘟病，细菌性叶枯病，鞘枯病和通果蝇的基因型，以及种子处理杀菌剂对水稻稻瘟病的功效

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A total of 35 inbred and 13 hybrid varieties including susceptible checks were screened against the 4 major diseases of rice (blast, bacterial leaf blight, sheath blight and tungro) as well as experiments on management of blast were conducted in the rain-fed and irrigated rice ecosystems during 1999 to 2003. Results showed that none of the tested high yielding varieties (HYV) were resistant to blast, while the hybrids, sonarbangla1, aalock6201, KRH2, IR71101H, IR68877H and IR76901H, and inbreds BR12, BR15 and IR72 were moderately resistant in the irrigated rice ecosystem. On the other hand, all the varieties tested against bacterial leaf blight (BLB) and sheath blight (ShB) were moderately susceptible in the same ecosystem. The inbred varieties BR22, BR25, BRRI dhan31, BRRI dhan32, BRRI dhan33, BRRI dhan34, BRRI dhan38 and BRRI dhan39 demonstrated moderately resistant reactions but all the hybrids were moderately susceptible to BLB in the rain-fed ecosystem. Eight inbreds, predominantly, BR22, BR23, BRRI dhan27, BRRI dhan31, BRRI dhan32, BRRI dhan37, BRRI dhan38 and BRRI dhan40 were moderately resistant to tungro disease. Among the 3 fungicides tested in 2 different trials, adivistin and haydazim 50 WP (carbendazim) at the rate of 0.4% were more effective as seed-treating fungicides for the control of rice blast disease.
机译：总共筛选了35个自交系和13个杂种，包括易感性检查，针对水稻的4种主要病害（稻瘟病，细菌性叶枯病，鞘枯病和通果蝇）进行了研究，并在雨养和灌溉条件下进行了稻瘟病管理试验水稻生态系统在1999年至2003年期间的结果。结果表明，经测试的高产品种均未对稻瘟病具有抗性，而杂种sonarbangla1，aalock6201，KRH2，IR71101H，IR68877H和IR76901H以及自交系BR12，BR15和IR72属于中等水平在灌溉水稻生态系统中具有抗性。另一方面，所有针对细菌性叶枯病（BLB）和鞘叶枯病（ShB）进行测试的品种在同一生态系统中均中等敏感。自交系BR22，BR25，BRRI dhan31，BRRI dhan32，BRRI dhan33，BRRI dhan34，BRRI dhan38和BRRI dhan39显示出中等抗性反应，但所有杂种在雨养生态系统中均对BLB敏感。八个近交系，主要是BR22，BR23，BRRI dhan27，BRRI dhan31，BRRI dhan32，BRRI dhan37，BRRI dhan38和BRRI dhan40对中度通古斯病有中等抵抗力。在2个不同的试验中测试的3种杀菌剂中，adivistin和haydazim 50 WP（多菌灵）的比例为0.4％，作为控制稻瘟病的种子处理杀菌剂更有效。

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