Changes of Pollen Germination Rate and Endogenous Hormones during Single Flower Opening of Chinese Jujube

ACTA HORTICULTURAE SINICA ›› 2005, Vol. 32 ›› Issue (4): 677-680.

• 研究报告 • Previous Articles Next Articles

Changes of Pollen Germination Rate and Endogenous Hormones during Single Flower Opening of Chinese Jujube

Wang Jiurui; Liu Mengjun;Liang Haiyong

(¹College of Forestry, Agricultural University of Hebei, Baoding 071001, China; ²Research Center of Chinese Jujube, Agricultural University of Hebei, Baoding 071001, China)

Received:2004-12-08 Revised:2005-01-28 Online:2005-08-25 Published:2005-08-25

Abstract

Abstract: The changes of pollen germination rate ( PGR) and endogenous hormones during single flower opening of Chinese jujube ( Ziziphus jujuba Mill. ) were studied using two cultivars‘Dongzao’and ‘Hunan Jidanzao’. The results showed that the PGR of Chinese jujube changed significantly during single flower opening. The PGR reached its highest at the stage of sepal flat in‘Hunan Jidanzao’and at the begining stage of opening in‘Dongzao’. PGR of‘Dongzao’kep t lower than 3% duringwhole flower season. High level ethylene, low level GA₃and Z during single flower opening were related to very low PGR in‘Dongzao’. In view of its severely low PGR, high fertility of embryo, aswell as high quality for fresh consuming, ‘Dongzao’could be used as a desirable female parent in the cross breeding of Chinese jujube.

Key words: Chinese jujube, Pollen, Germination, Endogenous hormones

CLC Number:

S 665.1

Wang Jiurui;Liu Mengjun;Liang Haiyong. Changes of Pollen Germination Rate and Endogenous Hormones during Single Flower Opening of Chinese Jujube[J]. ACTA HORTICULTURAE SINICA, 2005, 32(4): 677-680.

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Changes of Pollen Germination Rate and Endogenous Hormones during Single Flower Opening of Chinese Jujube

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