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Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (1): 117-126.doi: 10.16420/j.issn.0513-353x.2020-0171

• Research Papers • Previous Articles     Next Articles

Secondary Branches Development of Paeonia ludlowii

YUAN Tao(), CHEN Tingqiao(), TANG Ying   

  1. School of Landscape Architecture,Beijing Forestry University,National Engineering Research Center for Floriculture,Beijing Laboratory of Urban and Rural Ecological Environment,Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education,Beijing Key Laboratory of Ornamental Plants Germplasm Innovation & Molecular Breeding,Beijing 100083,China
  • Received:2020-07-21 Revised:2020-09-15 Online:2021-01-25 Published:2021-01-29

Abstract:

Branches development of Peaonia ludlowii was observed in Nyingchi,Tibet and Henan Paeoniaceae Ex-situ Conservation Center. The results showed that:it developed secondary branches around florescence in spring,the bud-above-part of the secondary branches would not dried in autumn,which is one of the characteristics that distinguishes it from other species and cultivars of Paeonia Sect. Moutan. The terminal buds on secondary branches differentiated into composite buds with floral primordium,leaf primordium and axillary primordium. A composite buds takes 3-annual cycles from the beginning of differentiation to blossoms and frucitification,about 17-20 months actually. The secondary branches development and the terminal buds differentiation were synchronized with the follicles,simultaneously increased the canopy height. The not-excavated-harvest was beneficial to branches regeneration.

Key words: Paeonia ludlowii, secondary branch, branch and bud development, composite bud

CLC Number: