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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (12): 151-155.doi: 10.11707/j.1001-7488.20141221

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Correlation between Damage of Curculio chinensis and Fruit Traits of Camellia meiocarpa

He Lihong, Li Zhiwen, Liu Jingjun, Si Jiayi, Zeng Aiping   

  1. Institute of Insect, Hunan Agricultural University Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests Changsha 410128
  • Received:2013-12-09 Revised:2014-03-24 Online:2014-12-25 Published:2015-01-08

Abstract:

To understand the key factors affecting fruit drop and to investigate the relationships between Curculio chinensis and fruit traits of Camellia meiocarpa, freshly fallen fruits were collected randomly with the parallel sampling method,and the weight, height and diameter of the fallen fruits were measured, and then the correlation analysis between C. chinensis damage and fruit traits of C. meiocarpa was conducted. The result showed that: Glomerella cingulata and C. chinensis were the main factors affecting fruit drop. The infestation of pests would obviously affect the development of the fruits. C. chinensis infestation rate was negatively correlated with fruit size, and the damage rate presented a parabola change with the fruit shape index increasing from 0.66~1.29, and had a maximum value of 27.10% when the fruit shape index reached 1.04±0.03. However there was no relationship between C. chinensis infestation rate and pericarp thickness of C. meiocarpa.

Key words: Camellia meiocarpa, Glomerella cingulata, Curculio chinensis, infestation rate, fruit shape index, pericarp thickness

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