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首页> 外文期刊>Plant Pathology Journal >Post-harvest Evaluation of Colletotrichum gloeosporioides f. sp. manihotis on Cassava Genotypes
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Post-harvest Evaluation of Colletotrichum gloeosporioides f. sp. manihotis on Cassava Genotypes

机译：Colletotrichum gloeosporioides的收获后评估。 sp。木薯基因型对manihotis的影响

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The aim of this study was to evaluate the post-harvest survival of Colletotrichum gloeosporioides f. sp. manihotis on infected cassava materials. Infected stem cuttings from 5 cassava cultivars 88/01084, 88/01983, 91/00395, 91/00317 and 91/00052, incubated at 25±2°C for 8 months, showed a significant decrease in fungal survival amongst the cassava cultivars. At 8 months incubation fungal recovery was lowest below 10% among the infected cultivars. Cassava stakes, stored at humid conditions under tree shades for 16 months, showed a gradual decrease in fungal survival up to the 1 Oth month, after which survival peaked again from the 12th up to the 16th month of storage. Survival of the fungus on soil significantly reduced with incubation time and atthe 6th month of sampling, there was no recovery recorded for all the soils from the field plot sites. Burial of infected materials for 150 days below 20-30 cm depth significantly reduced the survival of C. gloeosporioides f. sp. manihotis on infected materials. Burial at 30 cm depth for 150 days completely eradicated the fungus on the infected cuttings. These studies have shown that C. gloeosporioides f. sp. manihotis could survive on infected cuttings for more than 8 months, but less likely to survivein soil for up to 4 months. The potential of high cassava anthracnose disease transmission in cassava planting materials during storage is also reported.
机译：本研究的目的是评估Colletotrichum gloeosporioides f的收获后存活率。 sp。木薯受感染的木薯。在25±2°C下孵育8个月的5个木薯品种88 / 01084、88 / 01983、91 / 00395、91 / 00317和91/00052的感染茎插条在木薯品种中的真菌存活率显着降低。培养8个月后，在感染的品种中，真菌的回收率最低，低于10％。木薯树桩在潮湿的环境下于树荫下保存16个月，显示真菌存活率逐渐下降，直到1 Oth月，此后存活率从12个月到16个月再次达到峰值。随着培养时间的延长，真菌在土壤上的存活率显着降低，并且在采样的第6个月，从田间地块的所有土壤都没有恢复记录。在20-30 cm深度以下埋葬受感染材料150天会大大降低C. gloeosporioides f。的存活。 sp。 manihotis在被感染的材料上。在30厘米深处埋葬150天可完全清除真菌在受感染插条上的生长。这些研究表明，C。gloeosporioides f。 sp。 manihotis可以在受感染的插条上存活8个月以上，但在土壤中存活的可能性最高为4个月。还报告了在存储期间木薯种植材料中高木薯炭疽病传播的潜力。

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