Morphological Differentiation of the Flower Bud of Rosa persica

ACTA HORTICULTURAE SINICA ›› 2005, Vol. 32 ›› Issue (02): 331-334.

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Morphological Differentiation of the Flower Bud of Rosa persica

He Haiyang¹;Zhu Jinqi²;Gao Qijie³;Ueda Yoshihiro⁴;Gao Junping³;Hu Jianfang³

(¹Urumchi Environmental Resource Development Laboratory , Urumchi 830002, China; ² Shanghai Institute of Plant Physiology and Ecology, The Chinese Academy of Sciences, Shanghai 200031, China; ³College of Agronemy and Biotechnology, China Agricultural University, Beijing 100094, China; ⁴Faculty of Horticulture, Chiba University, Chiba 271-8510, Japan)

Received:2004-05-31 Revised:2004-08-31 Online:2005-04-25 Published:2005-04-25

Abstract

Abstract: The flower bud differentiation process of Rosa persica lasted for about 30 days from bract promordium differentiation in late March to carpel promordium formation in late Ap ril. The p rocess could be divided into six phases: before differentiation, bract differentiation phase, sepal differentiation phase, petal differentiation phase, stamen differentiation phase and pistil differentiation phase. Of them one time was occurred in differentiation of sepal primordium, and itmight be the reason of forming the simple layer of sepal. An larges of each floral promordium originated in peripheral zone cells of floralmeristem . The increase of cell number and diameter of apical pointwas higher in both extension phase and carpel differentiation phase.

Key words: Rosa L., Rosa persica, Flower bud differentiation, Development

CLC Number:

S685.12

He Haiyang;Zhu Jinqi;Gao Qijie;Ueda Yoshihiro;Gao Junping;Hu Jianfang. Morphological Differentiation of the Flower Bud of Rosa persica[J]. ACTA HORTICULTURAE SINICA, 2005, 32(02): 331-334.

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Morphological Differentiation of the Flower Bud of Rosa persica

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