Regulation Effect of Different Growth Regulators on the Flowering of'Feizixiao'Litchi
In order to explore the effective treatment techniques on litchi flower panicles,this study used'Feizixiao'litchi as the experiment material,treated the flower panicles with 6 kinds of plant growth regulators,including uniconazole,prohexadione calcium,sodium nitrophenolate,oxyfluorfen,abacisic acid and diethyl aminoethyl hexanoate,and compared the regulation effects of different treatments on litchi flowering.The results showed that all of the 6 treatments could extend the female flowering time of the panicles,and the average female flowering period of 23 days was achieved by using uniconazole.In terms of the flower amount and the female flower rate,except that prohexadione calcium treat ment significantly increased the male flowers and the total flower amount,and uniconazole significantly decreased themale flowers and increased the female flowers and its rate,there was no significant difference in the total flower amount and the female flower amount between the control and the other treatments,whose female flower rates were higher than that of the control in the following order:abacisic acid treatment＞diethyl aminoethyl hexanoate treatment＞sodium nitrophenolate treatment＞oxyfluorfen treatment.These results would support for the further scientific regulation of litchi flower panicles and the promotion of fruit setting.
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