Female and male flower bud differentiation of Jatropha curcas L. induced by gibberellin

HUI Wenkai,YANG Shuyi,CHEN Hanbin,LI Shuqi,PENG Changcao,WU Guojiang,CHEN Xiaoyang

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2016, Vol. 40 ›› Issue (06) : 174-REF!.

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南京林业大学学报（自然科学版）
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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2016, Vol. 40 ›› Issue (06) : 174-REF!. DOI: 10.3969/j.issn.1000-2006.2016.06.027

Female and male flower bud differentiation of Jatropha curcas L. induced by gibberellin

  • HUI Wenkai1,YANG Shuyi2,CHEN Hanbin2,LI Shuqi2,PENG Changcao2,WU Guojiang3,CHEN Xiaoyang2*
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Abstract

The purpose of this study was to study the effects of exogenous GA3 on flower bud differentiation of Jatropha curcas and screen the optimum concentration of gibberellin to increase the ratio of female flowers. We used three clones of J. curcas as trial materials, investigated and analyzed 14 flowers after spraying different concentrations of GA3 to inflorescence buds. The GA3 could promote the development of female flower, all the male and female flowers enlarged and the total number and proportion of female flowers were higher than that of the control, but inflorescence branches did not increase. The effect of 40 mg/L GA3 was optimum for the development of female flowers. However, average fruits per inflorescence, fruit weight, seed rate, 100-seeds weight and the seed oil content were significantly lower than that of the control after treatment. In this trial, with the increasing of GA3 concentration, the inflorescence branch would be withered, until 1 200 mg/L treatment, all flowers withered and no fruits were harvested. In conclusion, the effect of GA3 was relatively stable, and 40 mg/L GA3 was optimum for the development of female flowers.

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HUI Wenkai,YANG Shuyi,CHEN Hanbin,LI Shuqi,PENG Changcao,WU Guojiang,CHEN Xiaoyang. Female and male flower bud differentiation of Jatropha curcas L. induced by gibberellin[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2016, 40(06): 174-REF! https://doi.org/10.3969/j.issn.1000-2006.2016.06.027

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