TITLE

CONTRIBUCION AL CONOCIMIENTO DE LOS NUMEROS CROMOSOMICOS DE LOS GENEROS SECHIUM P. BR. Y SICANA NAUDIN (CUCURBITACEAE)

AUTHOR(S)
Mercado, Pedro; Lira, Rafael
PUB. DATE
July 1994
SOURCE
Acta Botanica Mexicana;1994, Issue 27, p7
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The results of karyological studies of cultivated Sicana odorifera (Vell.) Naudin, and five wild taxa of Sechium [S. compositum (J. D. Smith) C. Jeffrey, S. hintonii (P. G. Wilson) C. Jeffrey, wild plants of S. edule (Jacq.) Swartz (Section Sechium), S. venosum (L. D. Gómez) Lira & Chiang and S. villosum (Wunderlin) C. Jeffrey (Section Frantzia)], all Cucurbitaceae, are presented. Sicana odorifera has 2n = 40, in agreement with the numbers found in most species of tribe Cucurbiteae, to which this species belongs. Sechium has n = 12 (S. villosum), n = 13 (wild S. edule) and n = 14 (S. compositum, S. hintonii and S. venosum). The differences in chromosome numbers found in Sechium are proposed to be the result of aneuploidy, and the basic number x = 12 that has been proposed for subtribe Sicyinae needs to be re-evaluated.
ACCESSION #
21791706

 

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