Selection And Breeding Of Superior Kudzu Clones

This paper used field observations as primary selection and reelection through statistics method has selected fine phenotypic kudzu singles,and to choose excellent single to study the rapid propagation technology,carry on the clonal test,study drought hardiness and cold hardiness.Meanwhile has elicited the rating and the classification based on the growth speed and the economical output to various clones.The grey relative degrees between the economical output and phenotypic characters of kudzu different stages have been calculated based on the grey theory.The regression equation has been fitted between the economical output and phenotypic characters of kudzu different stages by multiple stepwise regression analysis.The comprehensive appraisal and the taxis of different kudzu clones were given through factor analysis and subordination function fuzzy estimation. Main findings as follows:1. There were some certain variation in various characters of kudzu singles and the different character is different in the difference degree.The variation which heavy exists in the average root yield of different kudzu singles most remarkable (coefficient of variation is 51.42%), other various characters variation degree achieves the remarkable level,but coefficient of variation of internode length comparatively is smaller (coefficient of variation is 11.64%).The factor which affects in a big way to the single adult kudzu plant's root output is the root form quality factor (accounts for the percentage is 28.97%), next is the semblance attribute quantity factor (accounts for the percentage is 21.98%), The grey relative degree analysis and the stepwise regression analysis indicated: Through the root diameter,the root length and the base branches choice may enhance the single adult kudzu plant's root output.2. Selects 9 fine single based on the factor analysis according to 30% being selected rate from primary election kudzu singles to use in to carry on the clonal test. Scores according to its factor appraisal is selected the single serial number order of rank is in turn 34 (100.00) > 22 (89.49) > 24 (88.92) > 25 (80.26) > 31 (80.06) > 47 (76.85) > 44 (76.53) > 33 (75.87) > 27 (75.54).