Resistance of cruciferous crops to turnip root fly

Vegetables: Root Crops

Delaying insect resistance to transgenic crops.

I n her seminal work, Silent Spring, Rachel Carson writes: ‘‘If Darwin were alive today the insect world would delight and astound him with its impressive verification of his theories of survival of the fittest. Under the stress of intensive chemical spraying the weaker members of the insect populations are being weeded out.’’ (1) Evolution of insecticide resistance in 400 species of insects no...

1982 Engineering durable root-knot nematode resistance in crops by RNAi silencing of a root-knot nematode parasitism gene

Secreted proteins coded by parasitism genes expressed in esophageal gland cells mediate infection and parasitism of plants by root-knot nematodes. An essential parasitism gene, designated as 16D10, encodes a conserved root-knot nematode secretory peptide that stimulates root growth and functions as a ligand for a plant transcription factor. Plants were engineered to silence this parasitism gene...

Root biomass and shoot to root ratios of perennial forage crops in eastern Canada

Bolinder, M. A., Angers, D. A., Bélanger, G., Michaud, R. et Laverdière, M. R. 2002. Root biomass and shoot to root ratios of perennial forage crops in eastern Canada. Can. J. Plant Sci. 82: 731–737. Shoot to root ratios (S:R) at peak standing crop are commonly used to estimate the annual crop residue C inputs to the soil from the root biomass left in the soil at harvest. However, root biomass ...

Root Crops in Papua New Guinea

Root crop production in Papua New Guinea is reviewed. Crops considered are the major ones (Ipomoea batatas, Colocasia esculenta, Dioscorea aiata, D. escuienta, Xanthosoma sagitti!olium), other significant root crops (Manihot esculenta, Psophocarpus tetragonolobus, Cyrtosperma chpmissonis., Alocasia macro"htza and Solanum tuberosum) and 27 minor crops. For the major and significant crops, aspect...