黑芝麻杂种优势研究

Study on Heterosis of Black Sesame

研究了黑芝麻两系杂种F1产量的超亲（父本）优势,其范围为-7.59%～61.22%,平均优势达31.05%,杂种F1产量及其构成性状的平均优势大小依次为单株产量＞单株有效蒴数＞千粒重＞每蒴粒数.杂种F1产量与果轴长度及产量构成性状呈极显著正相关,与株高和生育期呈显著相关.亲子（杂种F1与父本）间的关系密切程度则表现为单株有效蒴数＞单株产量＞千粒重＞每蒴粒数.

This paper reported that the over - parent yield heterosis （ male parent） of F1 hybrids of twoline combinations of black sesame ranged from -7.59% to 61.22%, and the average was 31.05%. The average over - parent heterosis of F1 hybrids in yield and yield component characters was single plant yield 〉 single plant capsules 〉 1000 - seed weight 〉 seeds per capsule in order. The very significantly positive correlations of the F1 hybrids were found between single plant yield and fruit stick, single plant capsules, the seeds per capsule, 1000 - seed weight respectively. The analysis of correlation and regression was done for the hybrids between two - line combinations and male parent, the results indicated the significant correlation between the F1 hybrids and male parent was single plant capsules 〉 single plant yield 〉 1000 - seed weight 〉 seeds per capsule in order.