[目的]为芒果杂交育种工作提供理论依据.[方法]研究广州甘蔗糖业研究所海南甘蔗育种场59个常用芒果亲本与32个亲本摘花处理后连续3年的始花期.[结果]结果表明,亲本的始花期具有遗传力较高的性状,广义遗传力达0.951 416 4.亲本的始花期年际间差异在4～26 d,平均为9.6 d.年际间变化在0～10 d内(含10 d)的占66.2%,在10～20 d内(含20 d)的占33.9%.32个亲本摘花处理后的始花期年际间最大差异在1～20 d,同一品系在同年份较亲本的始花期可推迟15～21 d.[结论]采用摘花技术可使早花品系与迟花品系的花期相遇,达到杂交的目的.%[Objective] The research aimed to provide theoretical basis for the work of mango cross breeding. [Method] The initial flowering periods of 59 commonly used mango parents and 32 parents after defloration for 3 years in series in Hainan Sugarcane Breeding Station of Guangzhou Sugarcane Industry Research Institute were studied. [Result] TheResults showed that there was more high heritability in the parent initial flowering period, the broad-sense heritability is 0.951 416 4. The inter-annual difference of parents initial flowering period is between 4 d and 26 d, with an average of 9.6 d. Inter-year changes within 0 - 10 d (including 10 d) accounted for 66. 2% , within 10 -20 d (including 20 d) accounted for 33.9%. The largest differences of the 32 parents flowering period in inter-annual after defloration were 1 -20 d, and the flowering period of the same line in the same year would be delayed 15 -21 d. [Conclusion] The techniques of defloration made early flowering lines encounter with late flowering lines ,and hybridization could be achieved then.
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