Pollen viability and stigma receptivity in vanilla ( Vanilla planifolia Andrews)

Pollen viability and stiglna receptivity period before and after complete flower opening was studied by hand pollinating the flowers/flower buds with its own pollen and fresh viable pollen. Based on the results, the pollen viability periods were 23 h before complete flower opening and 16 h 30 min after complete flower opening. The stigma receptivity periods were 41 h before complete flower opening and 17 h after complete flower opening under hill zone conditions.