Effects of Plant Growth Regulators on Plant Growth and Female Characters of Cucurbita moschata Hybrids
In order to explore the occurrence law of female flowers of pumpkin,regulate the flowering sequence of pumpkin,make the flowering node of the first female flower of the female parent of pumpkin lower,and simplify the hybrid seed production process of pumpkin,pumpkin hybrids varieties'JP56''JP57'and'JP58'were used as materials,and were treated with different groups and concentrations of ethephon,mepiquat chloride and Zenggualing at the seedling stage,and the growth and sexual differentiation expression of pumpkin plants were statistically analyzed.The results showed that for pumpkin'JP56',the first female flower node and node length of A3 treatment(sprayed with 0.3 g/L mepiquat chloride+1.06 mL/L ethephon during three-leaf and one-heart stage,and sprayed with 0.3 g/L mepiquat chloride+1.06mL/L ethephon+4.0g/L Zenggualing during five-leaf and one-heart stage)were the lowest,which were 9.22 node and 37.84 mm,respectively,significantly lower than those of the control sprayed with water,and the number of female flowers(3.39)was more than that of the control,which was the best spraying method.For pumpkin 1JP57',A2 treatment(sprayed with 0.3 g/L mepiquat chloride during three-leaf and one-heart stage,and sprayed with 0.3 g/L mepiquat chloride+4.0 g/L Zenggualing during five-leaf and one-heart stage)was the best spraying method,which significantly make the first female flower node decline to 6.55 node and significantly shortened the node length to 40.20 mm compared with the control.For pumpkin'JP58',B3 treatment(sprayed with ethephon 1.33 mL/L during three-leaf and one-heart stage,and sprayed with ethephon 1.33 mL/L+4.0 g/L Zenggualing during five-leaf and one-heart stage)significantly increased the SPAD value to 45.36,significantly declined the first female flower node to 7.33 node and significantly shortened the node length to 46.78 mm compared with the control,which was the best spraying method,and treatment A3 significantly increased the number of female flowers to 3.59 compared with the control.In production,the control mode of the corresponding plant growth regulator combination can be selected according to the specific demand.
pumpkingrowth transformationnode lengthfemale flowerethephonmepiquat chloridechemical agentseed production
万方数据
维普
