Chromosomal karyotype analysis of Sechium edule Swartz

doi:10.14088/j.cnki.issn0439-8114.2019.23.053

HUBEI AGRICULTURAL SCIENCES ›› 2019, Vol. 58 ›› Issue (23): 215-217.doi: 10.14088/j.cnki.issn0439-8114.2019.23.053

• Biological Engineering • Previous Articles Next Articles

Chromosomal karyotype analysis of Sechium edule Swartz

YANG Ting¹, WANG Ya¹, ZHANG Su-qin¹, CHEN Xing-zhuo¹, GENG Guang-dong¹, CHEN Li²

1.College of Agriculture,Guizhou University,Guiyang 550025,China;
2.Agricultural Park of Puding,Anshun 562100,Guizhou,China

Received:2019-01-17 Online:2019-12-10 Published:2019-12-18

Abstract

Abstract: To provide cytological basis for genetics and breeding for Sechium edule Swartz and its similar plants, chromosome preparations from root tip cell of Sechium edule Swartz were obtained by using dropping slide technique, and its karyotype was analyzed in order to understand chromosomal karyotype characteristics. The result showed that the genome of Sechium edule Swartz possessed 14 pairs of chromosomes, all of which were metacentric chromosomes（m）, and no any satellite was found in them. Its karyotype formula was 2n=2x=28=28m. The asymmetrical karyotype coefficient was 53.55%, which was symmetrical karyotype. Its karyotype belonged to the type 1A. Therefore, the evolution degree of Sechium edule Swartz was low among Cucurbitace.

Key words: Sechium edule Swartz, chromosome, karyotype

CLC Number:

S642.9

YANG Ting, WANG Ya, ZHANG Su-qin, CHEN Xing-zhuo, GENG Guang-dong, CHEN Li. Chromosomal karyotype analysis of Sechium edule Swartz[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(23): 215-217.

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Chromosomal karyotype analysis of Sechium edule Swartz

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