芹菜杂种优势的初步分析

Preliminary Analysis on Heterosis of Celery

为初步明确芹菜在单株质量及相关性状、营养品质性状上的杂种优势表现,筛选强优势杂交组合,以期为芹菜杂种优势的利用提供理论依据。以35份芹菜雄性不育系为母本,相应保持系和16份普通自交系为父本,配制158份单交种和29份三交种,调查、分析亲本和杂交组合各性状的杂种优势表现。结果表明:158份单交种的单株质量超亲优势变幅为-53.8%~78.3%,平均值为-7.2%,正向优势率为31.6%,且筛选出14个高产组合,8个优质组合;29份三交种中分别有41.4%和86.2%的组合在单株质量上具有正向超亲、超标优势,并筛选出7个高产组合,表明三交种在芹菜杂种优势上具有一定的利用价值和发展前景。

In order to preliminarily definite the heterosis expression in single plant weight,correlated traits,and nutritional quality characters,to screen out heterosis combinations with advantages,and provide theoretical basis for utilizing celery heterosis,this study took 35 male sterile lines of celery as female parents and its maintainer and 16 inbred lines as male parents;created 158 single cross hybrids and 29 three cross hybrids;and then investigated and analyzed the heterosis expressions in each trait of parents and hybrid combinations.The results showed that among the 158 single cross hybrids,the variation of over-parent heterosis in single plant weight was-53.8%-78.3%with-7.2%average value,and positive advantage rate was 31.6%.Besides,14 high-yielding combinations and 8 high-quality combinations were screened out.Among the 29 three cross hybrids,there were 41.4%and 86.2%combinations with single plant weight positively exceeding their parents and with superstandards advantage.7 high-yielding combinations were screened out,indicating three cross hybrid had certain utilization value and development prospect in celery heterosis.