This phenomenon is called protogyny, diurnally synchronousdichogamy common when warm weather prevails during flowering.Spraying flowers with sulphur will not reduce the blossom drop.

The high level of genetic variation in the samples of walnut is due to the propagation through seeds, high heterozygosis anddichogamy (Aslantas, 2006; Germain, 2004).

The pecan is a monoecious plant, having separate staminate and pistillate inflorescences on the same plant; however, it has a mechanism so-calleddichogamy. This means that the time of pollen release and pistil receptivity may not overlap.

T indicas bisexual flowers exhibit protogynousdichogamy, with flowering occurring in dry season where there is both self- and cross-pollination but the latter is much more effective.

Dodichogamy and herkogamy reduce sexua interference in a self-incompatible species?

(2016) evaluated the floral biology of 'Isabel" cultivar and also observed the absence ofdichogamy strategy in flowers.

The interfloral protogynousdichogamy of Dorstenia arifolia and D.

No evidence ofdichogamy or herkogamy was detected.

Therefore, the species has protandrydichogamy. We observed several immature fruits dropped by many plants during their development, indicating abortive events.

Dichogamy, partial self-incompatibility, and inbreeding depression during embryo development may be sufficient to exclude inbred progeny from the seeds of these maples.

Other mechanisms avoiding self-pollination as spatial separation (herkogamy) and temporal separation (dichogamy) (Barrett, 2003; Webb & Lloyd, 1986; Lloyd & Webb, 1986) are hardly related to the stigma type in legumes in part due to the few experimental studies found in literature for this group.

T.paniculata has self-incompatibility species anddichogamy it will help to prevent self-pollination.