Improvement of Cauliflower Male Sterile Lines with Brassica Nigra Cytoplasm, Phenotypic Expression and Possibility of Practical Application

P. Kaminski, B. Dyki, A. A. Stepowska

Abstract


Improvement of the male sterile cauliflower genotypes with Brassica nigra cytoplasm (CMS) according to ability for generative propagation and quality of agronomical traits was performed in former Research Institute of Vegetable Crops, presently Institute of Horticulture, Skierniewice, Poland in the years of 2002-2010. Cauliflower CMS lines and their fertile maintainers were back-crossed with good quality cauliflower breeding lines followed by the stabilization of sterility/or rf, rf nuclear genes in consecutive generations. The presence of untypically developed plants with chimeral generative stacks or partially fertile flowers among segregating test-cross progeny of improved maintainers may suggest the presence of some non-allelic genetic factors modifying the fertility/sterility character for a part of the plants. As a result CMS genotypes with B. nigra cytoplasm and their maintainers with improved quality, significantly higher seeding index, and lower level of flower deformations were obtained.


Full Text: PDF DOI: 10.5539/jas.v4n4p190

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Journal of Agricultural Science ISSN 1916-9752 (Print) ISSN 1916-9760 (Online)

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