Identification of Male Sterility of Pear Cultivars in Niitaka Line

ACTA HORTICULTURAE SINICA ›› 2007, Vol. 34 ›› Issue (2): 289-294.

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Identification of Male Sterility of Pear Cultivars in Niitaka Line

YUAN De-yi¹, TAN Xiao-feng^1*, ZHANG Lin¹, HE Xiao-yong¹,ZHAO Si-dong¹, WUYUN Ta-na¹,DUAN Jing-hua¹, and Li Xiu-gen²

(¹The Key Laboratory of Non-wood Forestry Product of the Ministry of Forestry, Central South Forestry University, Changsha 410004, China; ²Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China)

Received:2006-11-03 Revised:2007-03-12 Online:2007-04-25 Published:2007-04-25
Contact: TAN Xiao-feng

Abstract

Abstract: A large number of Niitaka line cultivars in sand pear (Pyrus pyrifolia Nakai) exhibited male sterility were firstly found. Nine cultivars in Niitaka line were examined by morphologic observation of pollen and anther, pollen culture in vitro, whole stain2chearing technique, paraffin sectioning, and pollination tests. The results indicated that Josengwhangkeum was a male fertile cultivar. All other eight cultivars, Niitaka,WhangKeumBae, Sujeong, Yeongsanbae, Yewang, J inqiu, Banndainiitaka, and Nokaniitaka, were male sterile cultivars. These p lants had abnormal or extremely few normal pollens that resulted from pollen abortion.Male sterile cultivars in Niitaka line were sporogenesismale sterility. The degree ofmale sterilitywas different among the cultivars.

Key words: Pyrus pyrifolia, Niitaka line, Male sterility, Cultivar, Identification

CLC Number:

S 661.2

YUAN De-yi;TAN Xiao-feng;ZHANG Lin;HE Xiao-yong;ZHAO Si-dong;WUYUN Ta-na;DUAN Jing-hua;and Li Xiu-gen. Identification of Male Sterility of Pear Cultivars in Niitaka Line[J]. ACTA HORTICULTURAE SINICA, 2007, 34(2): 289-294.

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Identification of Male Sterility of Pear Cultivars in Niitaka Line

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