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为评价我国甘蔗亲本的遗传特点和组合的选配效果,采用澳大利亚家系试验法,借助R软件估算亲本的遗传方差、一般配合力(GCA)和组合特殊配合力(SCA)。结果表明:锤度的遗传主要受母本加性基因效应所制约,蔗茎产量主要受母本加性基因效应和非加性基因效应所制约,株高、茎径和有效茎受父母本加性基因效应和非加性基因效应所制约。CP88-2143、ROC10、ROC26、桂糖00-122、粤糖00-318和云蔗99-113作母本,内江57-416、崖城93-26、粤糖91-976和粤糖00-319作父本杂交后代表现出高产高糖,可作为糖能兼用好亲本使用。根据组合特殊配合力效应(SCA),CP88-2143×粤糖00-319、ROC10×粤糖91-976、ROC26×崖城93-26、桂糖00-122×ROC22、粤糖91-976×ROC22、粤糖93-159×内江57-416和云蔗99-113×CP84-1198组合综合表现良好,可作为生产性杂交组合,加大力度使用。
In order to evaluate the genetic characteristics and the combination effect of sugarcane parents in our country, the Australian pedigree test method was used to estimate the genetic variance, general combining ability (GCA) and combined specific combining ability (SCA) of parents using R software. The results showed that the inheritance of brix was mainly controlled by the additive gene effect of maternal parent. The yield of cane stem was mainly controlled by the additive gene effect and non-additive gene effect. The plant height, stem diameter and effective stem were Sexual gene effect and non-additive gene effect. CP88-2143, ROC10, ROC26, Gui sugar 00-122, Yugu sugar 00-318 and Yunxian 99-113 as female parent, Neijiang 57-416, Yacheng 93-26, Yugu sugar 91-976 and Yugu sugar 00- 319 parents after the crossbreeding shows high yield of high sugar, sugar can be used as a good parent. According to the combination of special combining ability effect (SCA), CP88-2143 × Yue Tang 00-319, ROC10 × Yue Tang 91-976, ROC26 × Yacheng 93-26, Gui sugar 00-122 × ROC22, Guangdong sugar 91-976 × The combination of ROC22, YE 93-159 × Neijiang 57-416 and Yunji 99-113 × CP84-1198 performed well and could be used as a productive hybrid combination with greater efforts.