By M. Stubsjøen (auth.), O. A. Rognli, E. Solberg, I. Schjelderup (eds.)

This publication includes papers and posters provided on the 18th Eucarpia Fodder vegetation part assembly held at Loen, Nordfjord, Norway in August 1993.
In such a lot environments a few type of marginal stipulations or tension prevails. Few plants are being produced below one of these wide selection of environmental and administration stresses as fodder vegetation. enhanced version of fodder vegetation to marginal stipulations is important in constructing sustainable, low-input agricultural structures. The publication is exclusive in demonstrating the massive range either in vegetation and environmental stresses that confront the forage breeders. either basic and particular points of model to marginal starting to be stipulations are awarded, starting from difficulties as a result of snow and ice within the Subarctic areas of Europe to the critical drought difficulties within the Mediterranean areas.
for everybody all in favour of reports of edition and breeding of perennial crops for marginal stipulations or tension environments.

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Additional resources for Breeding Fodder Crops for Marginal Conditions: Proceedings of the 18th Eucarpia Fodder Crops Section Meeting, Loen, Norway, 25–28 August 1993

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The duration of snow cover in the winter 1992/93, for instance, was 43 days in Hohenlieth (45 m), but 143 days in Gereute (l085 m). The important fact, however, is that the average winter hardiness of the ecotype progenies is superior to that of the check varieties. This is particularly true at the testing sites Griinschwaige (435 m) and Gereute (1085 m). We feel that the collected ecotypes include very valuable genetic resources for improving winter hardiness in Italian ryegrass. Persistency. Italian ryegrass is less persistent than perennial ryegrass.

In fact, when comparing ecotypes from different altitudes, rust resistance decreases as altitude increases. Winter hardiness. Data for winterhardiness are presented in Table 8. Obviously, the winter stress increases with increasing altitude of the testing sites. The duration of snow cover in the winter 1992/93, for instance, was 43 days in Hohenlieth (45 m), but 143 days in Gereute (l085 m). The important fact, however, is that the average winter hardiness of the ecotype progenies is superior to that of the check varieties.

This material was included in the WPBS collection for regeneration and further evaluation at WPBS and Weihenstephan. No detailed information about the results is available up to now. 39 Table 3. Relative dry matter yield of the 'Spitalhof' perennial ryegrass population Year Average 3 check varieties Relative dry matter yield 'Spitalhof' population at Spitalhof Weihenstephan x: 1985 1986 100 100 112 114 123 110 117 112 x: 100 113 117 lIS Collection Krings and Simon Italian ryegrass is the most productive forage grass within a crop rotation in Germany.

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