Environmental Modulation of Flowering in Mung Bean (Vigna radiata): a Reappraisal

Abstract
SUMMARY: The phenology of mung beans is extremely plastic; responsiveness tobothphotoperiodandtemperature is known to modulate flowering. A previous conclusion, perpetuated uncritically now for almost forty years, has been that both (quantitative) short- and long-day flowering responses exist in the mung bean germplasm. However, our re-analysis of the original data leads us to an alternative conclusion: that genotypes of mung bean are quantitative short-day plants with different optimum mean diurnal temperatures for flowering. This alternative interpretation (which is plausible biologically and in evolutionary terms) is discussed.

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