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. (2005) Genetic variation of melon ( C. melo ) compared to an extinct landrace from the Middle Ages (Hungary). Euphytica 146 , 87–94. Heszky L. Genetic variation of melon (C. melo
Whitney, G.G. and D.R. Foster. 1988. Overstorey composition and age as determinants of the understorey flora of woods of Central New England. Journal of Ecology 76: 867-876. Overstorey composition and age as determinants of the
Ames, B. N., Shigenaga, M. K., Hagen, T. M. (1995) Mitochondrial decay in aging. Biochim. Biophys. Acta 1271 , 165-170. Mitochondrial decay in aging
Barja, G. (2002) Endogenous oxidative stress: relationship to aging, longevity and caloric restriction. Ageing Res. Rev. 1 , 397–411. Barja G. Endogenous oxidative stress
with coarse woody debris and stand ages in Oregon. The Bryologist 101: 366–376. Muir P.S. Bryophyte species association with coarse woody debris and stand ages in Oregon
The subject of the present study is the monitoring of the hardwood groves at the Martonvásár Manor Park with the involvement of 20 earlier (recorded in 1980–1981) and 20 current (recorded in 2011–2012) phytocoenological relevés. The manor park was created in the first half of the 19th century. Since then the woods along the St László stream have developed into species-rich and semi-natural forests, which can be identified as related to the oak-ash-elm groves (Scillo vindobonensis-Ulmetum) of the Zámoly Basin and the Csepel Island. The results of the current monitoring repeated 30 years after the first survey show momentous changes in forest dynamics such as the ageing-related opening of the upper canopy and an intense closure of the lower canopy and shrub layer. The ratio of the invasive species doubled. Present findings may provide additional information for long-term forest ecology research, however, results could be considered as changes of a semi-natural hardwood forest with minimal human impact.
1283 1288 Floyd, R. A., Hensley, K. (2002) Oxidative stress in brain aging. Implications for therapeutics of neurodegenerative diseases. Neurobiol. Aging 23 , 795
Basavarajappa, B. S., Shetty, H. S., Prakash, H. S. (1991): Membrane deterioration and other biochemical changes, associated with accelerated aging of maize seeds. Seed Sci. Technol. , 19 , 279–286. Prakash H
Excess of malignancies in grandparents of children with malformations?
Short Communication
In a prospective study, the occurrence of malignancies in children referred to genetic counseling for congenital malformations, in their sibs, parents and grandparents was registered in 120 families by means of personal interviews. One hundred-and-twenty age matched subjects, admitted for acute respiratory infections or trauma, served as controls. No difference in the occurrence of tumors or leukemias between the two groups was found when the values of patients, sibs, and parents were compared. At the same time, the grandparents of probands with malformations had had significantly more malignancies than the grandparents of the controls. This may be explained by the fact that grandparents lived beyond the age of the usual onset of common cancers and leukemias.
