胡萝卜黄色突变体的遗传及表现研究

 从胡萝卜‘新黑田五寸’品种的高世代自交系中发现了能稳定遗传的黄色突变体。遗传分析证明该黄色突变性状为单基因隐性遗传, 绿色对黄色为完全显性。黄色突变体叶片中叶绿素含量仅为正常株的29.3% ～50.1% , 且黄色不受温度光照等环境的影响。黄色突变体( yelyel) 地上部和地下部的生长量明显少于正常株系( YELYEL ) , 但在等位基因杂合时( YELyel) 与正常株系的生长量、产量和营养品质无显著差异。

Studies on Inheritance and Phenotype of the Yellow Mutant of Carrot

Stably inherited leaf yellowish mutant was found in the high-generated inbred line of carrot cultivar (Daucus carota‘Kuroda’). Genetic analysis indicated that the yellowish mutant was nucleolus inheritance and was controlled by one pair of recessive gene, and green colorwas comp lete dominant to yellow color. The leaf chlorophyll content of the yellowish mutant was only 29.3% - 50.1% of the normal line, and was not affected by the temperature and the illumination of the environment. The growth weight of the over-ground and under-ground of the mutant ( yelyel) was significantly lower than the weight of the normal line ( YELYEL ) , but when the allele is heterozygous ( YELyel) , there was no significant difference in growth weight, yield and nutrient quality between the mutant and the normal line.