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研究了不同浓度La(NO3)3、LaCl3对尾巨桉DH32-29、邓恩桉的组培苗及扦插生根的影响。结果表明在组培生根中添加La(NO3)3、LaCl3对易生根的DH32-29有一定的作用,但作用不是很明显;对较难出根的邓恩桉的作用较为明显,且低浓度即低于100mg/mL时具有促进生根的作用,高于此浓度则起抑制生根的作用。扦插时在低温条件下添加La(NO3)3、LaCl3可使尾巨桉的生根时间提前5.8d,在高温条件下对生根时间影响不大,但可改善根的质量。
The effects of different concentrations of La (NO3) 3 and LaCl3 on the tissue culture seedlings and cutting rooting of Eucalyptus urophylla DH32-29 and Dunaliella salina were studied. The results showed that adding La (NO3) 3 and LaCl3 to rooting DH32-29 had some effect on rooting, but the effect was not obvious. The effect of Dunaliella dunnii which was more difficult to root was obvious, and the low concentration was low At 100mg / mL has the role of promoting rooting, above this concentration will play a role in inhibiting rooting. When cutting, adding La (NO3) 3 and LaCl3 at low temperature advanced the rooting time of E. urophylla by 5.8 days, but had little effect on rooting time under high temperature, but improved root quality.