geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

A new parent stock for peaches Prunus persica X Prunus davidiana


, : A new parent stock for peaches Prunus persica X Prunus davidiana. Italia Agric 79(12): 664-667

In search of a new stock for peaches the author thought of employing Prunus davidiana, but trees grown in Italy, like those grown in America, did not exhibit any affinity with the peach, so that all trials with grafting failed. The trees were, moreover, completely self-sterile. New kernels imported from China in 1934 germinated and gave rise to vigorous seedlings, part of which had light green, another part reddish shoots. They flowered in the 3d yr., the green-shooted ones with white, the red-shooted with red flowers. In the 4th year some fruits ripened in the middle of July. The kernels had a high degree of germinating power. The author supposes that the red and the green forms may be in-terfertile. In 1937, pollinating peaches with pollen of P. davidiana was tried. When keeping flowering branches of the latter, which flowers some weeks before the peach trees, at low temps., simultaneous opening of the flowers of both vars. was attained and cross pollination was possible, in some cases successfully. Finally 2 trees were grown from hybrid seeds which, in 1942, gave some fruits of an intermediary character between the 2 parents, exhibiting a 1 cm. thick white and soft pulp of bitter and astringent taste but with a slight muscardine aroma, differing much from the smaller fruits of P. davidiana with their coriaceous shell. The trees grown from the hybrid seeds may be suitable as parent stocks. The author intends to back-cross the hybrid to both of the parents.

US$29.90


Other references

Weatherall, M., 1957: Discussion on the toxic effects of drugs used in neurological & psychiatric practice. Proceedings of the Royal Society of Medicine 50(8): 617-619

Lazarczyk, M.; Grzela, K.; Grzela, T., 2005: Immunostimulatory oligonucleotides in therapy of allergic diseases. At present, the improvement of hygienic life standards is considered as an environmental condition, increasing the prevalence of allergic diseases, as early contact with some pathogens is, according to the hygiene hypothesis, required for maturati...

Mitchell, C.A.; Walker, R.V., 1941: Studies in Equine Encephalomyelitis: Susceptibility of Some Mammals and Birds. A strain of E.E. virus (Western type) produced infection in horses, g. pigs, mice, white rats, hamsters, and chipmunks. Cattle were only slightly susceptible. Swine, sheep, goats, foxes, cats, ferrets, and rabbits were refractory. The groundhog wa...

Mann, J.M.; Rollag, O.J.; Hull, H.F.; Montes, J.M., 1984: Animal bites as an occupational hazard among animal control officers. Of 205 animal control officers employed in New Mexico, 193 (94%) were interviewed. During 1982 a total of 117 184 animals were handled and 41 of 102 handlers were bitten by 220 cats or dogs. The chance of being bitten was 175-500 times the backgro...

Ling, Y-hua.; Zhang, F-qiang.; Han, J-lin., 2007: Effect of stress distribution of support tissues using attachment prostheses with different number of abutment. The purpose is to evaluate the effect of the stress distribution of support tissues when using the hinge extracoronal attachment for distal-extension prosthesis with different number of abutment. Hinge extracoronal attachment was used for retentio...

Davies, E.J., 1957: Modification of hemiplegic gait. Physical Therapy Review 37(8): 521-522

Mehrparvar, A.Houshang.; Mirmohammadi, S.Jalil.; Hafezi, R.; Mostaghaci, M.; Davari, M.Hossein., 2015: Static anthropometric dimensions in a population of Iranian high school students: considering ethnic differences. Anthropometric dimensions of the end users should be measured in order to create a basis for manufacturing of different products. This study was designed to measure some static anthropometric dimensions in Iranian high school students, considering...

Groves D.I.; Ford R.J., 1963: Note on the measurement of pyrrhotite composition in the presence of both hexagonal and monoclinic phases. Investigation of the inversion of monoclinic pyrrhotite to the hexagonal form by heating at 600 degrees C showed that most specimens exhibited two reflections, with considerable variation in relative intensity. These reflections represent the pres...

Okwumabua, J.O.; Martin, B.; Clayton-Davis, J.; Pearson, C.M., 1997: Stroke Belt initiative: the Tennessee experience. African Americans have a higher rate of stroke than other U.S. population groups. As part of the 11-state "Stroke Belt" region, Tennessee has the fifth highest death rate from stroke in the country. In 1993, a two-year community-based pr...

Anonymous, 1990: Dielectric properties of grain and seed. This standard was revised in June 1989 from the previous standard ASAE D293.1.