SciELO - Scientific Electronic Library Online

 
vol.20 issue4Potential of twenty exotic germplasms to improve Brazilian maize architectureProduction of recombinant antigens in plants for animal and human immunization - a review author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Brazilian Journal of Genetics

Print version ISSN 0100-8455

Abstract

BALLVE, Rosa M.L.; MEDINA-FILHO, Herculano Penna  and  BORDIGNON, Rita. Identification of reciprocal hybrids in citrus by the broadness of the leaf petiole wing. Braz. J. Genet. [online]. 1997, vol.20, n.4 ISSN 0100-8455.  http://dx.doi.org/10.1590/S0100-84551997000400023.

Broadness of leaf petiole wing (WB) was investigated as a morphological marker for screening hybrids of the very narrow-winged species Citrus limonia and C. sunki with broad-winged species C. aurantium and C. sinensis. Controlled polinizations produced over 500 reciprocal hybrids with potential in the ongoing rootstock breeding program identified by the Pgi-1 and Prxa-1 isozyme loci. Measurement ratios WB/leaf length, WB/leaf broadness and WB/petiole length identified 86 to 91% of the reciprocal hybrids produced. However, visual classification of WB was an equally efficient but much easier and faster method. It can be very useful in breeding programs when large number of plants have to be screened or when isozyme, RFLP or RAPD laboratories are not available.

        · abstract in Portuguese     · text in English