A first record of Pestalotiopsis clavispora in Argan mass cutting propagation: Prevalence, prevention and consequences for plant production

作者：Bakry Mustapha^*; Bussieres Guy; Lamhamedi Mohammed S; Margolis Hank A; Stowe Debra C; Abourouh Mohamed; Blais Martine; Berube Jean A

来源：Phytoprotection, 2009, 90(3): 117-120.

DOI：10.7202/045780ar

• Argania spinosa
• fungicides
• Pestalotiopsis clavispora
• rooted cuttings

A trial involving the mass propagation of Argania spinosa cuttings was established following two protocols: in mini-bouturatheques without mist and in a greenhouse under mist. Symptoms of petiole necrosis, foliar yellowing and abundant black acervuli were observed under both protocols. These symptoms were responsible for a 90% mortality rate in the mini-bouturatheques while under the mist treatment premature fatal necrosis of the apical buds resulted in 100% mortality. The disease's causal agent, Pestalotiopsis clavispora, was identified on the basis of its morphological characteristics and by molecular analysis. Alternating weekly treatments of systemic and contact fungicides resulted in a 41% success rate in controlling this pathogen, described for the first time on argan cuttings.

• 出版日期2009-12