The Selection and Breeding of Super Poplar Clones as Fibre Timber Resistant to Batocera horsfieldi
- Received Date: 1995-03-14
- Available Online: 2012-12-04
Abstract: I-69(Populus deltoides cl.'Lux'(I-69/55),as a female parent plant,I-63 (P. deltoides cl.‘Harvard'(I-63/51))、P. nigra and P.× euramericana cv. ‘Serotina 272')as male parent plants,artificially controlled pollination was conducted in 1983.Cross combinations were numbered as No.34,No.32 and No.37 respectively. After selection in the nursery and clone test in Mian County of Shanxi Province from 1985 to 1993,2 super poplar clones(34-301 and 34-286),Which grow fast,resistant to insect and with good quality,were selected by using method of principal components analysis,cluster analysis of genetic distance of principal components and selection index. The volume of 34-301 and 34-286,which grow for 9 years,were 24.9% and 16.6% higher than that of I-69 respectively,and 16.7% and 8.9% higher than that of 34-314 respectively. Resistance to Batocer horsfieldi of 34-301 and 34-286 were significantly higher than that of I-69,their population per tree were 0.4 and 0.5,(for I-69 was 5.38).There was apositive correlation between the resistance to B.h. and the content of tannins and phenolics according to the analysis of chemical composition. Resistance to B. h.was controlled by genes according to the analysis of molecular biolfogy(RAPD analysis).Molecular marker of RAPD (OPAD-01)was found,which linked to genes of resistance to B.h.