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马卡属于十字花科独行菜属,具有极高的营养价值和药用价值。在快繁过程中,光对马卡愈伤组织生长,丛生芽的诱导和存活有显著的影响。绿光和蓝光既不利于愈伤组织的生长也不利于丛生芽的诱导和存活。白光、红光和黄光能明显促进愈伤组织的生长,在这些光照条件下丛生芽的诱导率为60%～80%,丛生芽存活率为29%～36%。适当延长光照时间可提高丛生芽的存活率,合适的光照时间为16h/d。但是过强的光照可使丛生芽的存活率降低,合适的光照强度为24～41μmol/m2.s。
Maca belongs to the crucifer family, with high nutritional value and medicinal value. In the process of rapid propagation, light had a significant effect on callus growth, induction and survival of clustered shoots. Green and blue light are not conducive to the growth of callus is not conducive to the induction and survival of clusters of buds. White light, red light and yellow light could obviously promote the growth of callus. The induced rate of clustered shoots was 60% ~ 80% under these light conditions, and the viable buds’ survival rate was 29% ~ 36%. Appropriate to extend the light time can improve the survival rate of clustered shoots, the appropriate light time is 16h / d. However, too strong light can reduce the survival rate of clusters of buds, the appropriate light intensity of 24 ~ 41μmol / m2.s.