Publication Date
1993
Description
The development of lucerne (Medicago saliva L.) germplasms which are tolerant to continuous grazing, adapted to dryland agriculture in the mediterranean zone and resistant to aphids, is described, Undomesticated lucerne accessions from 14 countries were crossed with winter-active cultivated lucerne accessions adapted to mediterranean climates to produce 4 S populations which were selected for tolerance to continuous intense grazing by sheep, The most tolerant populations were screened to develop germplasms resistant to spotted alfalfa aphid and blue-green aphid. The 72 populations that were developed from these germplasms by further selection for grazing tolerance and aphid resistance were tested for persistence under rotational and continuous grazing in a dryland mediterranean environment. Populations derived from undomesticated Spanish and Afghanistani lucernes and the Australian ecotype Hunter River were the most persistent and tolerant to continuous grazing.
Citation
Kaehne, I; Kobelt, E T.; and Horsenell, J A., "Contribution of Undomesticated Germplasm to Development of Persistent, Grazing-Tolerant Lucerne" (2024). IGC Proceedings (1993-2023). 13.
https://uknowledge.uky.edu/igc/1993/session9/13
Included in
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Contribution of Undomesticated Germplasm to Development of Persistent, Grazing-Tolerant Lucerne
The development of lucerne (Medicago saliva L.) germplasms which are tolerant to continuous grazing, adapted to dryland agriculture in the mediterranean zone and resistant to aphids, is described, Undomesticated lucerne accessions from 14 countries were crossed with winter-active cultivated lucerne accessions adapted to mediterranean climates to produce 4 S populations which were selected for tolerance to continuous intense grazing by sheep, The most tolerant populations were screened to develop germplasms resistant to spotted alfalfa aphid and blue-green aphid. The 72 populations that were developed from these germplasms by further selection for grazing tolerance and aphid resistance were tested for persistence under rotational and continuous grazing in a dryland mediterranean environment. Populations derived from undomesticated Spanish and Afghanistani lucernes and the Australian ecotype Hunter River were the most persistent and tolerant to continuous grazing.
