Table 1.

Interspecific crosses performed in this study

	Experiment	Maternal	Paternal	Pollen	No. of	No. of	No. of	No. of harvested	No. of analyzed
Year	site	species	species	source	crosses	isolation bags	pollinated strobili	hybrid cones	cones (cross/OP)
2006	Heilihe	P. tabuliformis	P. densata	Linzhi	23	666	>1000	397	397/52
2008	Heilihe	P. tabuliformis	P. yunnanensis	Kunming	27	651	>1000	356	356/48
2010	Heilihe	P. tabuliformis	P. yunnanensis	Baoshan	15	779	>1100	175	58/65
2010	Baoshan	P. yunnanensis	P. densata	Linzhi	14	330	>700	597	64/30
2010	Baoshan	P. yunnanensis	P. tabuliformis	Heilihe	22	355	>700	408	100/79
2010	Linzhi	P. densata	P. yunnanensis	Baoshan	14	390	>700	115	53/36
2011	Linzhi	P. densata	P. tabuliformis	Heilihe	18	463	>1000	540	66/67
				Total	133	3634	>6000	2588	1094/377

OP = open pollination.