Exogenous Plant Hormones Affect Blooming and Fruiting Characteristics of Leymus chinensis

doi:10.11924/j.issn.1000-6850.casb18090061

Abstract

Abstract: To improve the sexual reproduction of Leymus chinensis, and yield and quality of its seeds, the gibberellin, auxin and cytokinin were selected for foliar spray on L. chinensis leaves at jointing stage in the artificial pasture, to study their effects on blooming and fruiting characteristics. The results showed that the effects of different plant hormones on blooming and fruiting characteristics of L. chinensis were different, low concentration GA3 (75 mg/L) increased the total number of flowers and fruiting through increasing blooming number in later period of full- bloom stage and the floret number bloomed before 9:00 am, and at last it increased the weight of single spike (P<0.05). Although 150 mg/L KT did not influenced the floret blooming number during full-blooming, it increased the seed number and weight per plant significantly (P<0.05). 75 mg/L IAA had no effects on the floret blooming number, the seeds number and weight per plant. Therefore, spraying GA3 and KT with moderate concentration on leaves at jointing stage is beneficial for blooming and fruiting characteristics of L. chinensis.

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References

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