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中国植物病理学会2015年学术年会

作者： E.Bureau Total Fluides SAS 24 Cours MicheletLa Defense 1092069 Paris La DefenseFrance

Bananas and plantains are grown in most of the tropical and subtropical regions of the *** represent a key staple food in many developing countries and play an important economic role in some countries where banana production is grown *** banana industry is affected by several pests and diseases including sigatoka leaf streak diseases *** control strategies were implemented with different approaches according to the socioenvironmental context of the countries where banana is *** control strategies based on forecasting methods have a positive impact on delaying the development of fungicide resistance.

关键词： Bananas plantains sigatoka forecasting paraffinic oils.

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Plantain Bananas PIF Seedlings Treatment with Liquid Extracts of <i>Tithonia diversifolia</i>Induces Resistance to Black sigatoka Disease

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American Journal of Plant Sciences 2020年第5期11卷 653-671页

作者： Robinson Nembot Tatsegouock Cécile Annie Ewané Arouna Meshuneke Thaddée Boudjeko Laboratory of Phytoprotection and Plant Valorization Biotechnology Center University of Yaoundé 1 Messa-Yaoundé Cameroon Department of Biochemistry Faculty of Science University of Yaoundé 1 Yaoundé Cameroon

Plantain bananas culture encounters the problems of seedlings quantity and quality unavailability. Black sigatoka Disease (BSD) is one of the main pathological constraints of banana that can severely reduce the photosynthetic leaf area, leading to the losses of production of about 50% in banana plantation. The use of liquid extracts of Tithonia diversifolia could potentially induced the resistance of the PIF seedlings to BSD during the vegetative stages in the nursery. The aim of this work was to evaluate the effect of Tithonia diversifolia liquid extracts against the development of BSD on the PIF plantain bananas seedlings. The explants in the greenhouse and the seedlings in the shade were watered with liquid extracts of T. diversifolia during the process of PIF seedling production in sterile and non-sterile conditions. The treated seedlings show a more effective enhancement of seedlings quality parameters and also induce resistance against BSD. The vegetative stages parameters (the number of shoots, the diameter and the height of shoots, the foliar area, the length and weight roots) were improved in treated seedlings compared to controls ones. The treated seedlings showed maximum protection against BSD of up to 87% compared to controls. They also exhibited an increase in the accumulation of total proteins and total phenolics, as well as the activity of defense-related enzymes (peroxidase, polyphenol oxidase and glucanase). The treatment seems to acts as a vital stimulator and could therefore be a useful tool for small holder farmers favouring an eco-friendly agriculture using fewer synthetic inputs.

关键词： Plantain Banana PIF Seedlings Tithonia diversifolia Black sigatoka Disease Induced Resistance Vital Stimulator

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Potential Biostimulant Effect of Clam Shells on Growth Promotion of Plantain PIF Seedlings (<i>var</i>. Big Ebanga &Batard) and Relation to Black sigatoka Disease Susceptibility

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American Journal of Plant Sciences 2019年第10期10卷 1763-1788页

作者： Cécile Annie Ewane Félix Ndongo Katy Ngoula Paul Martial Tene Tayo Stephen Obol Opiyo Thaddée Boudjeko Laboratory of Phytoprotection and Plant Valorization Biotechnology Center University of Yaoundé 1 Messa-Yaoundé Cameroon Department of Biochemistry Faculty of Science University of Yaoundé 1 Yaoundé Cameroon Molecular and Cellular Imaging Canter-Columbus OARDC The Ohio State University Columbus OH USA

Plantain contributes significantly to income generation and food security for millions of people in the world. However, it faces problems of seedlings quantity, quality and availability. The innovation of the “plants issus de fragments de tiges” (PIF) technique could be a solution to these problems for small holders’ farmers. The aim of this research is to evaluate the effect of clam shells through amendment of Batard and Big Ebanga PIF substrate, on the growth promotion of seedlings and their protection against black sigatoka disease (BSD). Plantain PIF seedlings of the two varieties were grown in a substrate amended with 1% concentration of the clam shells powder in the presence of negative control in the sterile and non-sterile conditions. Agromorphological characteristics, susceptibility level to BSD, total proteins and polyphenols content were assessed. Because of the presence of clam shells in the substrates, explants germinated quickly, generated high number of shoots, grew taller by 32%, with a diameter of pseudo stems of 30%, and area of leaves of 18% compared to control. In addition, the seedlings were less susceptible to BSD by 73% compared to those of controls. The treatment seems to allow the accumulation of larger amounts of total proteins and polyphenols before inoculation and after inoculation that could participate in the growth promotion and the reduction of plant’s susceptibility level. Clam shells treatment acts as a biofertilizer/biopesticide and could be helpful to boost production of plantain seedlings, the use of the by-products of fishing in agriculture and helps alleviate poverty of small holders’ farmers.

关键词： Plantain (Musa spp.) PIF Seedlings Clam Shells Biostimulant Potential Biofertilizer Biopesticide Black sigatoka Disease

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