Embryological observations on seed abortion in Hibiscus syriacus L. and physiological studies on nutrients, enzyme activity and endogenous hormones

Table 1 Stigma receptivity of H. syriacus over the course of the day of anthesis, as indicated by benzidine-hydrogen peroxide staining

Note: Few bubbles or the appearance of an inconspicuous blue colour is noted as +/-; a large number of bubbles or a distinct blue colour is noted as ++/--; a large number of larger bubbles or the appearance of a blue-purple colour is noted as +++/---

ISSN: 1471-2229