The use of resistant clones of rubber trees could constitute a strategy for managing anthracnose disease caused by Colletotrichum. To examine this possibility, three isolates of Colletotrichum CH93 (C. fructicola) and CH 102 and CH 130 (C. acutatum) were used as inoculum for 20 rubber clones planted in Brazil. These evaluations took place in both a laboratory and in a clonal garden. For inoculation in the laboratory, isolates CH93 (C. fructicola) and CH102 and CH130 (C. acutatum) were used. Inoculation of the clones was performed by placing a disc of PDA with mycelium from each isolate on leaf tissues of each clone. In the clonal garden, five samples were collected at random from 30 leaflets on three different plants. In the laboratory and in the clonal garden, the percentage of leaf area damaged by the fungus was evaluated digitally. Clones had varied reactions to the different isolates used in inoculations. In the laboratory tests, clones IAC 507, IAC 502 and PR 255 appeared most resistant, with no symptoms develop, regardless of the isolate used in the inoculation. Six days after inoculation, clones PB 235, RRIM 937 and PB 311 also had low levels of disease for some fungal isolates. In field evaluations, IAC 507 and IAC 505 showed no symptoms of anthracnose. The RRIM 600 clone, which is the most cultivated, proved to be susceptible to the disease. The results provide a basis for the development of more detailed research with clone IAC 507 and with those showing less disease in the laboratory and in the field, including clones RRIM 937, IAC 505, IAC 502 and IAC 503.

中文翻译：

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橡胶树对炭疽菌的无性系抗性。

使用抗性橡胶树无性系可以构成管理由炭疽菌引起的炭疽病的策略。为了检验这种可能性，炭疽病CH93（的3株Ç。 腐病菌）和CH 102和CH 130（Ç。  acutatum）用作接种物种植在巴西20个橡胶克隆。这些评估在实验室和无性系花园中进行。接种在实验室中，隔离CH93（Ç。 腐病菌）和CH102和CH130（Ç。  acutatum) 被使用。通过将带有来自每个分离物的菌丝体的PDA圆盘放置在每个克隆的叶组织上来进行克隆的接种。在无性系花园中，从 3 种不同植物的 30 片传单中随机收集了 5 个样品。在实验室和无性系花园中，被真菌破坏的叶面积百分比以数字方式进行评估。克隆对接种中使用的不同分离株有不同的反应。在实验室测试中，克隆 IAC 507、IAC 502 和 PR 255 表现出最强的抵抗力，无论接种中使用的分离株如何，都没有出现任何症状。接种 6 天后，克隆 PB 235、RRIM 937 和 PB 311 对于某些真菌分离株也具有低水平的疾病。在现场评估中，IAC 507 和 IAC 505 没有表现出炭疽病的症状。RRIM 600 克隆是栽培最多的，证明对这种疾病很敏感。这些结果为使用克隆 IAC 507 以及那些在实验室和现场显示较少疾病的研究（包括克隆 RRIM 937、IAC 505、IAC 502 和 IAC 503）开展更详细的研究奠定了基础。