Figure 1: Final germination rate (a) and germination energy (b) after pre-treatment solution treatments in V. negundo var.heterophylla . Different letters are significantly different at P < 0.05.
Figure 2: Different artificial pollination treatments in V. negundo var. heterophylla.
Open pollination (OP), anemophily (WP), autonomous selfing (SSP), autogamy (SP), geitonogamy (G), xenogamy (X).
(a) OP: open pollination, detecting pollination under natural conditions and as comparison; (b) WP: anemophily, detasseling and netting to detect the degree of anemophily;(c) SSP: autonomous selfing; setting the paper bag, except for other operations, to check whether it can be spontaneously pollinated;(d) SP: autogamy; setting paper bags and performing flush pollination;(e) G: geitonogamy, detasseling paper bags and cross-pollinating the same plant; (f) X: xenogamy, detasseling paper bags and allogamy of different plants.