Chinese Journal of Agrometeorology ›› 2009, Vol. 30 ›› Issue (S1): 111-114.

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Gray Relevant Analysis on Impacts of Meteorological Factors on Flower Bud Differentiation of Litchi

WU Zhi-xiang1,2,ZHOU Zhao-de1,3,TAO Zhong-liang1,2,WANG Ling-xia3,YANG Xin-feng3(1.Ministry of Agriculture Danzhou Key Field Station of Observation and Research for Tropical Agricultural Resources and Environments,Danzhou 571737,China;2.Ministry of Agriculture Key Laboratory for Tropical Crops Physiology/Rubber research institute,CATAS,Danzhou 571737;3.South China University of Tropic Agriculture,Haikou 571737)   

  • Online:2009-12-15 Published:2009-12-15

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Abstract: By using the method of grey correlative analysis,the impacts of meteorological factors on trees' physiological factors,of trees' physiological factors to flower bud differentiation(FBD) and of meteorological factors to FBD of two litchi cultivars was analyzed.The results showed that(1)least relative humidity,minimum temperature and average relative humidity were more effective meteorological factors to litchi trees' physiology;(2)precipitation and sunshine duration were the less effective factors.ABA and IAA concentration in the litchi tresses were the larger effects trees' physiological factors to FBD;(3) minimum temperature was the largest factor to litchi FBD,and precipitation was the least of all the meteorological factors.The results provided an important theoretic basis for some scientific measures in improving litchi FBD.

Key words: Meteorological factors, Flower bud differentiation(FBD) of litchi, Trees' physiological factors, Grey correlative analysis