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The estimation of cross yield using early generation and parental yields in dry beans (Phaseolus vulgaris L.)

, : The estimation of cross yield using early generation and parental yields in dry beans (Phaseolus vulgaris L.). Euphytica 25(2): 515-520

The relationship between the yield potential of crosses for several generations and the yield of either the parental varieties or early segregating generations was studied. If plants were grown at crop densities, a high degree of prediction of cross potential was possible independent of year or generation. Prediction was much less efficient, however, if either the parents or the early generations were grown as spaced plants. At crop densities an accurate assessment of parental yields is sufficient to determine which crosses are most likely to have a high yield potential. If any cross proves to be low yielding in early generations it may safely be rejected without fear of losing potentially high yielding crosses. Reasons for the failure of predictions, as reported in the literature, are discussed.


DOI: 10.1007/bf00041586

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