Resistance Rss feed

Disease resistance is a very desirable quality when it comes to the breeding of various plant species. Pests and diseases can drastically affect plants and crops that are used for consumption and commercial purposes, and it is important for people in the industry to develop ways for protection against disease. In fact, plant disease resistance is essential to the reliable production of food, and it has also shown significant benefits such as reductions in the agricultural use of land, water, fuel, and even agrochemicals.

In the past, there have been numerous examples of the impacts of devastating plant disease, such as in the case of the Irish Potato Famine, in which Ireland was plunged disease, and emigration into a period of mass starvation, human disease, and eventual emigration because of potato blight, a disease that can destroy entire crops.

Plant breeders are always on the lookout for ways to improve the selection and development of disease-resistant plant lines. Plant varieties with genetically determined disease resistance are often the first choice for the control of disease. Breeding for disease resistance in plants has been undertaken ever since plant species were first domesticated, but this practice requires continual effort. Pathogen populations are typically under natural selection for increasing their virulence, and this is why plant breeders should always find ways to reinforce the resistance of plants. New pathogens might also be introduced to an area and new cultivation methods can be favorable for the occurrence of disease in plants over time.

Crossbreeding a desirable yet disease-susceptible plant variety to another (more robust) variety is a common practice, as well as the selection of disease-resistant individuals from a certain area.

This category contains scientific information on disease resistance, a very desirable quality when it comes to the breeding of various plant species.

Powder mildew resistance in 268 entries of hordeum vulgare

Torp J., 1984: Powder mildew resistance in 268 entries of hordeum vulgare. Acta Agriculturae Scandinavica: 480-484 A collection of 24 ‘Spontaneum’ barley entries and one comprising 244 Ethiopian barleys were tested for resistance to 4 powdery mildew cultures that carried genes for virulence corresponding to most of the known powdery mildew resistance genes. The infection [...]


Potencies of inhaled anesthetics and alcohol in mice selectively bred for resistance and susceptibility to nitrous oxide anesthesia

Eger E.I.II, 1982: Potencies of inhaled anesthetics and alcohol in mice selectively bred for resistance and susceptibility to nitrous oxide anesthesia. Anesthesiology (hagerstown): 18-24 A selective breeding process designed to produce mice resistant (Hi mice) and susceptible (Lo mice) to N2o anesthesia was continued through 10 generations. At the 10 generation, the N2o requirements of [...]


Polymorphism of amylases from rye endosperm intracultivar and intercultivar variability of the electrophoretic pattern of amylases

Masojc, P.; Lapinski, M., 1984: Polymorphism of amylases from rye endosperm intracultivar and intercultivar variability of the electrophoretic pattern of amylases. Genetica Polonica 25(1): 17-26 Using polyacrylamide gel electrophoresis the variability in the isoenzymatic composition of.alpha.- and.beta.-amylases from 10 population varieties and strains of rye were studied (Dankowskie Zlote, Animo, Halo, Otello, Petkus 1035, Ponsi, [...]


Plant breeding for yield under arid conditions

Monti L.M., 1979: Plant breeding for yield under arid conditions. Genetica Agraria4: 331-340 After defining what is meant by arid conditions in breeding work, the necessity of finding out several different genes controlling drought resistance at different developmental stages of the plant is underlined. Data from experimental areas, ad hoc investigations, international yield nurseries, screening [...]


Pink bollworm pectinophora gossypiella lepidoptera gelechiidae effects of natural infestation of upland and pima cottons untreated and treated with insecticide

Wilson F.D., 1983: Pink bollworm pectinophora gossypiella lepidoptera gelechiidae effects of natural infestation of upland and pima cottons untreated and treated with insecticide. Journal Of Economic Entomology: 1152-1155 Two upland cottons, Gossypium hirsutum L., and 1 American Pima cotton, G. barbadense L., were grown for 3 seasons in unsprayed plots and in plots sprayed for [...]


Phyto alexin production by corn plants with different genetic backgrounds having chlorotic lesion resistance against helminthosporium turcicum

Lim S.M., 1980: Phyto alexin production by corn plants with different genetic backgrounds having chlorotic lesion resistance against helminthosporium turcicum. Zeitschrift Fuer Pflanzenkrankheiten Und Pflanzenschutz: 244-251 The effectiveness of the gene Ht and of other genes for chlorotic-lesion resistance to produce phytoalexins or phytoalexin-like compounds is a function of the inbred background. The Btu-32 sel, [...]


Physiological reasons for heterosis in growth of bos indicus x bos taurus

Frisch J.E., 1987: Physiological reasons for heterosis in growth of bos indicus x bos taurus. Journal Of Agricultural Science: 213-230 By comparing growth rates of Brahman (B), Hereford.times. Shorthorn (Hs), their reciprocal F1 hybrid (F1bx), their Fn hybrid (FnBX) and an F1 Charolais.times. Brahman hybrid (F1 Ch.times. B) in environments that differed in their levels [...]


Physiological races of melampsora lini

Krylova T.V., 1981: Physiological races of melampsora lini. Mikologiya I Fitopatologiya: 414-418 Research confirmed the racial diversity of the causative agent of rust on fiber flax in the Ussr and demonstrated the necessity of systematic control of its composition. Identification of new virulent races of rust, understanding of the reaction of parental and breeding flax [...]


Perspectives and directions for the continued development of insect resistant rice varieties

Heinrichs E.A., 1986: Perspectives and directions for the continued development of insect resistant rice varieties. Agriculture Ecosystems & Environment: 9-36 The status of breeding and commercial utilization of insect resistant rice varieties is reviewed. Efficient methods for screening the world collection of rices have been developed and utilized to identify sources of resistance to 32 [...]


Performance of cottons gossypium hirsutum when infested with tobacco budworm heliothis virescens

Dearing L., 1986: Performance of cottons gossypium hirsutum when infested with tobacco budworm heliothis virescens. Crop Science: 93-95 Thirteen germplasm lines of cotton, Gossypium hirsutum L., including seven cultivars were grown for 3 years with and without tobacco budworm, Heliothis virescens F. There is a paucity of information available on the performance of cotton germplasm [...]