It seems that genotypes resistant to leaf rust and late leaf spot shared the pedigree or have the same resource of resistance.
Such factors interfere with open communication, impede the sharing of lessons learned, cause duplication and unnecessary expenditure of resources, prompt resistance to external advice and create a burden for managers, among other undesirable outcomes.
However, what happens if those insects are subjected to 'poor' conditions after allocating resources to resistance?
However, the mechanisms and resources of resistance to ARD pathogens have not been carefully investigated.
However, no genetic resources of resistance can protect vascular system from infection [ 17].
Using these resources, various resistance genes have been detected and some of these have been cloned, whereas others are in the cloning pipeline.
Performances of hosts allocating none of the available resources to resistance and tolerance are the highest at the start of infection (Pt = 0 = PMax) and decrease as Ct increases.
The study of recovery is now of major interest, in view of its potential use as a control strategy against grapevine phytoplasmas, due to the absence of genetic resources for resistance.
Besides these two species, the species C. anguria (West Indian gherkin) and C. metuliferus (African horned cucumber) are commercially cultivated in some areas as well [ 12], and are also the important resources of resistance for some disastrous disease in cucumber and melon production, such as root knot nematode [ 13, 14].
These independent studies have pointed out that chromosome 1AS is a copious resource of effective resistance to multiple biotypes, but it is not known if this region contains multiple resistance genes, or one resistance gene with multiple alleles against Hessian fly, or a combination of both.
