Early Identification of the Hybrid Generation of Three Wild Hevea Germplasm
In order to investigate the application prospects of fast-growing wild Hevea brasiliensis germplasm in breeding program,the 1981'IRRDB germplasm XJA05583,XJA05664 and XJA05164 were selected as male parents crossed with high-yield clone Reyan 88-13 in 2003-2005.The girth growth and dry rubber yield of 287 progeny plants were surveyed in 2010.The result showed that mean girth of individuals grew faster,significantly greater than that of the control; the diy rubber yield of test tapping was significantly lower than that of the control,eighteen mating combination Reyan88-13×XJA05664 and two mating combination Reyan88-13×XJA05583 were higher than it,but only occupied 15.65% and 1.66%.Twelve individuals of them were selected as vigorous at girth growth and dry rubber yield.Wild germplasm can pass its fast-growing characters to its offsrpings in high frequency and show great potential of breeding high yielding offspring,so which can be considered as parents to select latex/timber clone.