HUBEI AGRICULTURAL SCIENCES ›› 2021, Vol. 60 ›› Issue (11): 76-80.doi: 10.14088/j.cnki.issn0439-8114.2021.11.016

• Horticulture & Local Products • Previous Articles     Next Articles

Comprehensive evaluation of superior individuals of dwarf crape myrtle using hierarchy-gray correlation method

YANG Yan-ling, LI Zhen-fang, MA Lin-jiang, WANG Rui-wen, ZHANG Xin-ye, PENG Chan, HUANG Guo-wei, CHEN Hui-ling   

  1. Hubei Academy of Forestry,Wuhan 430075,China
  • Received:2020-08-23 Online:2021-06-10 Published:2021-07-15

Abstract: For cultivating dwarf shrubby Lagerstroemia indica, selecting flower density, inflorescence length, inflorescence width, flower diameter, flower color, flowering period, plant type, plant height, crown width, growth vigor, disease resistance and other 11 indicators, the evaluation system of dwarf shrubby L. indica's ornamental character was established by combining the grey correlation analysis method with the AHP method using 110 individual plants of hybrid offspring from the intraspecific hybridization of L. indica as materials. Based on the weight value of each evaluation index determined by Analytic hierarchy process and according to the grey correlation degree value, all the materials were divided into 4 grades and 6 plants with the good comprehensive characters including dense flowers, good shape, bright and pure color were picked out. The evaluation system can be used to evaluate the dwarf shrubby L.indica's ornamental characters effectively, and this provided a scientific method for selection breeding.

Key words: Lagerstroemia indica L., superior individual, comprehensive evaluation

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