Effa Effa, B. W. | bioRxiv Science

bioRxiv2022

Effects of organic fertilizer digestate on the growth of tomato (Lycopersicon esculentum Mill)

Tomatoes are known for their human health benefits. Tomato producers use chemical fertilizers to increase tomato production levels. However, the use of organic fertilizers such as digestate can achieve satisfactory yields while sustaining the soil environment. In this tomato study, the effect of three dilutions of digestate (25%, 50% and 75%) on plant height, leaf area and fruit number were compared to NPK 15 15 15. The 50% dilution of digestate had the most beneficial effect on the plants at the end of the experiment.

plant biology↗

bioRxiv2022

QTLs analysis for cold tolerance in rice (Oryza sp.) at the seedling stage using F2 population developed from cross between the genotypes NERICA L-19 and Diamante

Rice (Oryza sp.) is the most important food crop of the developing world and the staple food of more than half of the world population. It is produced in about 110 countries, including Africa under traditional production systems where field conditions are often variable and yield is low. This is due to the preponderance of abiotic stresses such as cold in these systems. The aim of this study was to identify QTLs associated with cold tolerance at the seedling stage. It was obtained: a phylogenetic tree showing individuals tolerant and sensitive to cold in the Sahel conditions at the seedling stage; 5 majors QTLs associated with cold tolerance located on chromosome 4; QTLs associated with cold tolerance at the seedling stage using F2 population developed from cross between NERICA L-19 X Diamante. All these results are interesting, because to pass local varieties sensitive to cold tolerant varieties through the identification of QTLs associated with cold tolerance that might be introduced. This will enable African producers; especially small producers which have low resource to buy a plant material adapted to the cold period to optimize their rice yields.

genetics↗