In order to research the impact of the plant growth regulator on the growth of seedlings of Camellia reticu-late'Xiaomi'and optimal dosage.This paper discussed plant growth regulator study which is wider application in C.reticulate'Xiaomi',use 3×3 regression of GA3 and IAA two factors.Choose a different concentration of GA3,IAA and its combination to alpine of C.reticulate'Xiaomi'grafting seedlings.Exclude the impact of the initial value after the data obtained through the covariance analysis prove:(1)Optimal concentrations of very significant promoting effect on the height of 5 mg/L GA3 and 5 mg/L IAA in 9 different combinations,34.4%higher of its handling than the non-application of plant growth regulators.(2)Ground diameter very significant promoting effect concentration combina-tion of 10 mg/L GA3 and 5 mg/L IAA is 24.6%higher than the control.(3)In 9 kinds of portfolio,all processing has very significant promoting effect on the crown,the optimal concentration combination is 0 mg/L GA3 and IAA 5 mg/L,26.1%higher than the control.The results show that,Application of GA3(10 mg/L)and IAA(0 mg/L or 5 mg/L)can promote Yunnan alpine C.reticulate'Xiaomi'grafted seedlings'height,ground diameter and crown growth.
Camellia reticulate 'Xiaomi'plant growth regulatorgibberellinindole acetic acidgrowth of seedlings
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