By M. Stubsjøen (auth.), O. A. Rognli, E. Solberg, I. Schjelderup (eds.)
This publication comprises papers and posters offered on the 18th Eucarpia Fodder plants part assembly held at Loen, Nordfjord, Norway in August 1993.
In such a lot environments a few type of marginal stipulations or pressure prevails. Few vegetation are being produced below this kind of wide variety of environmental and administration stresses as fodder plants. stronger version of fodder plants to marginal stipulations is important in constructing sustainable, low-input agricultural platforms. The ebook is exclusive in demonstrating the big variety either in vegetation and environmental stresses that confront the forage breeders. either normal and particular facets of variation to marginal growing to be stipulations are offered, starting from difficulties as a result of snow and ice within the Subarctic areas of Europe to the serious drought difficulties within the Mediterranean areas.
for everybody fascinated with experiences of model and breeding of perennial crops for marginal stipulations or pressure environments.
Read or Download Breeding Fodder Crops for Marginal Conditions: Proceedings of the 18th Eucarpia Fodder Crops Section Meeting, Loen, Norway, 25–28 August 1993 PDF
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Additional info for Breeding Fodder Crops for Marginal Conditions: Proceedings of the 18th Eucarpia Fodder Crops Section Meeting, Loen, Norway, 25–28 August 1993
On the high density area, total seed input over the four-year period was estimated at 99,385 m- 2 , from which 87 seedlings m- 2 resulted, of which 6 remained at the end of the study. 3% vs 0% on the high density area - despite autumn seedling numbers being 3 times greater than those of the spring seedlings. Clearly selection pressures at the seedling level are extremely high. If we look at the performance of adult individuals on the site, again based upon two weekly censuses, we can again see that there is a continual erosion of adult plant numbers over the period, although the rate of change is much lower than that of seedlings.
Aston JL and Bradshaw AD 1966 Evolution in closely adjacent populations n. Agrostis stolonifera in maritime habitats. Heredity 21, 649-664. Blom CWPM and Lotz LAP 1985 Phenotypic plasticity and genetic differentiation of demographic characteristics in some Plantago species. In: Structure and Functioning of Plant Populations 2. pp. 185-194. Eds. J Haeck and JW Woldendorp. North Holland Publishing Company, Amsterdam. Bradshaw AD and McNeilly T 1981 Evolution and Pollution. Edward Arnold, London. Charles AH 1964 Differential survival of plant types in swards.
Many such wastes have very sharp boundaries where deposition of wastes has ceased. Several studies of the distribution of tolerance across such boundaries have been made, and show that tolerant and normal non-tolerant populations can be separated by as little as 1 m distance. Gene flow has also been shown to be high, but population integrity is maintained by the severity of selection against non-adapted types in both habitats (McNeilly, 1968). An even more remarkable example of population differentiation over a very small scale has been shown in the case of Anthoxanthum odoratum in the Park Grass plots set up at Rothamsted.