title: VARIABILITY OF THE SIZES OF PETALS AND NECTAR DISK BLADES OF SPIRAEA SALICIFOLIA L. (ROSACEAE) IN CONNECTION WITH THE MAIN MANIFESTATIONS OF THE FLOWER MALE GENERATIVE SPHERE REDUCTION
abstract: Nature of variation of the sizes of petals and nectar disk lobes as well as their connection with the degrees of the main manifestations of flower male generative sphere reduction were studied in Spiraea salicifolia. The sizes of petals and nectar disk lobes were found to vary significantly in flowers with different degrees of the manifestations of male sphere reduction and therefore can be considered as secondary sex characteristics. Decrease in the petal size appeared to be statistically assoc
journal: Byulleten Moskovskogo Obshchestva Ispytatelei Prirody Otdel Biologicheskii