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ARS Home » Pacific West Area » Davis, California » Nat'l Clonal Germplasm Rep - Tree Fruit & Nut Crops & Grapes » Research » Publications at this Location » Publication #231297
Title: Isozyme variation in wild and cultivated pineapple

Author
item Aradhya, Mallikarjuna
item Zee, Francis
item MANSHARDT, R. - UNIV OF HAWAII - HORT

Submitted to: Euphytica
Publication Type: Popular Publication
Publication Acceptance Date: 8/9/1994
Publication Date: N/A
Citation: Aradhya, M.K., Zee, F.T., Manshardt, R.M. 1994. Isozyme variation in wild and cultivated pineapple. Euphytica 79: 87-99.

Interpretive Summary: Isozyme variation was studied in 161 accessions of pineapple including four species of Ananas and one of Pseudananas. Six enzyme systems (ADH, GPI, PGM, SKDH, TPI, UGPP) involving seven putative loci revealed 35 electromorphs . Considerable variation exists within and between species of Ananas. Sixty-six distinct zymotypes were identified . Multivariate analyses of isozyme variation indicated that A. comosus contains five genetically diverse groups that do not match perfectly with the traditional varietal groups. Isozyme evidence also suggests that A. erectifolius is a conspecific variant of A. comosus, and that among other wild species, A. ananassoides is more closely related to A. comosus than A. bracteatus. Pseudananas is genetically distinct from all species ofAnanas. It is evident from our study that differentiation among the species of Ananas may be due to ecological isolation rather than genetic divergence with breeding barriers and therefore may represent a species complex .

Technical Abstract: Isozyme variation was studied in 161 accessions of pineapple including four species of Ananas and one of Pseudananas. Six enzyme systems (ADH, GPI, PGM, SKDH, TPI, UGPP) involving seven putative loci revealed 35 electromorphs . Considerable variation exists within and between species of Ananas. Sixty-six distinct zymotypes were identified . Multivariate analyses of isozyme variation indicated that A. comosus contains five genetically diverse groups that do not match perfectly with the traditional varietal groups. Isozyme evidence also suggests that A. erectifolius is a conspecific variant of A. comosus, and that among other wild species, A. ananassoides is more closely related to A. comosus than A. bracteatus. Pseudananas is genetically distinct from all species ofAnanas. It is evident from our study that differentiation among the species of Ananas may be due to ecological isolation rather than genetic divergence with breeding barriers and therefore may represent a species complex .