母株光照强度与插条不定根的形成(综述)

STOCK PLANT IRRADIANCE AND THE SUBSEQUENT ROOTING OF CUTTINGS (A REVIEW)

母株光照强度影响插条不定根的形成。有三种光照强度反应类型:第一种是高光照反应型,插条的生根力随母株光照强度的增加而提高;第二种是低光照反应型,插条的生根力在母株低光照下最强;第三种属于中间型,母株光照强度的改变对插条生根没有明显的效应。因此,插条生根随植物种的不同而需要不同的最适光照强度。母株光照强度影响插条不定根形成的机制尚未完全清楚。

Irradiance Levels under which stock plants were grown influenced the subsequent rooting of cuttings. Resutts obtained perviously showed that there exsietd three responding types of rooting to stock plant irradiance Rooting of cuttings in plant species like Chrysanthemum and Campanula positively responded to stock plant irradiance, while rooting capacity in cuttings of Pisium, Dahlia and Hedera decreased with an increase in stock plant irradiance. The third type included Malus and Ligustrum in which stock plant irradiance had little effect on rooting of cuttings. In conclusion, the optimal stock plant irradiance varied from species to species The mechanism that stock plant irradiance affected rooting of cuttings was unclear.