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EFFECTS OF ACIDITY ON IN VITRO POLLEN GERMINATION
EFFECTS OF ACID RAIN ON IN VIVO TREE POLLEN
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2p values acid mist acid rain April 13 base of style black birch buffering confidence confidence confidence confidence limits1 mean Effects of acid F tests flowering dogwood forest germinating grains germination and tube germination media germination occurred growth media hours after end initial pH Initial pollination Later limits X limits limits1 mean confidence limits2 Linear and quadratic linear relationships maple pollen germination March 30 mean confidence limits mean number medium mist exposures mist on number Murdy number of grains number of pollen number of tubes percent germination pH mean confidence pH range pollen tubes pollinated 19 hours quadratic relationships rain exposure rain on red red maple pollen reduced relationships1 between number relative humidity seed set sensitive to acidity Shivanna significant SO2 fumigation stigmas stigmatic surface sugar maple sulfur dioxide TABLE tree 1 tree tube length tubes at base tubes present values for F vitro pollen growth vivo growth yellow birch