2014, 27(2): 277-283.
Paulownia wood is of great quality, but the wood stain is easily occurred after sawing. 29 Paulownia fortunei trees which have excellent growing properties were selected by properties of wood color, 5 indexes were used to compare and analyze the wood color, including psychometric lightness, red degree, yellow degree, color difference and Hunter whiteness. The result shows that the differences of each index among individuals reach to an extremely significant level. It is concluded that certain potentiality exists in excellent selection from individuals. The Cluster analysis of all individuals with the 5 indexes was did by median method, 5 individuals which prior clustered together: superior fortunei 4, superior fortunei 25, superior fortunei 5, superior fortunei 3 and superior fortunei 2 were selected, the selection rate is 17.24%. The Hunter whiteness and psychometric lightness values of individuals selected were significantly higher than other clusters, the color difference were significantly lower than other clusters, the red degree and yellow degree were in the middle, the average Hunter whiteness values of individuals selected reached to 75.060, the selection differential was 3.818, selection intensity was 1.297. These individuals have excellent color properties, superior stem form and no disease, can be widely applied in the production.
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