Identification of Several Monosomics in Chinese Cabbage and Observation of Their Chromosome Behaviors

ACTA HORTICULTURAE SINICA ›› 2012, Vol. 39 ›› Issue (3): 561-566.

• Research Notes • Previous Articles Next Articles

Identification of Several Monosomics in Chinese Cabbage and Observation of Their Chromosome Behaviors

LUO Shuang-xia，CHEN Xue-ping，and SHEN Shu-xing^*

College of Horticulture，Hebei Agricultural University，Baoding，Heibei 071001，China

Received:2011-12-27 Revised:2012-02-20 Online:2012-03-25 Published:2012-03-25
Contact: SHEN Shu-xing E-mail:shensx@hebau.edu.cn

Abstract

Abstract: In the present paper，nine 2n–1 = 19 plants were obtained from the 534 microspore plantlets of autotetraploid Chinese cabbage by chromosome number examination，and then three monosomic lines（mono-3，mono-5 and mono-6）were preliminary identified by karyotype analysis and propagation in vitro. The plant and flower bud morphological characters，pollen viability and regularity were significantly different between the three monosomics and diploid. Flower bud type among the three monosomics also occurred markedly difference. The unitary chromosome of the monosomics was mainly existed in an univalent，occasionally formed a trivalent with another pair of homological chromosomes at diakinesis or at metaphaseⅠ，and the chromosome distribution of the monosomics was mainly 9-10 at anaphaseⅠ.

Key words: Chinese cabbage, chromosome, monosomic

LUO Shuang-Xia, CHEN Xue-Ping, SHEN Shu-Xing. Identification of Several Monosomics in Chinese Cabbage and Observation of Their Chromosome Behaviors[J]. ACTA HORTICULTURAE SINICA, 2012, 39(3): 561-566.

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Identification of Several Monosomics in Chinese Cabbage and Observation of Their Chromosome Behaviors

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