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REGISTRATIONS OF GENETIC STOCKS

Registration of Unifoliate Faba Bean Genetic Stocks

^a Instituto de Agricultura Sostenible, Apdo 4084, 14080 Córdoba, Spain
^b CIFA Alameda del Obispo s/n, Córdoba, Spain

^* Corresponding author (ge1susom{at}uco.es)

Seven unifoliate (UN37, UN56, UN88, UN113, UN162, UN173, UN179) Vicia faba L. genetic stocks (Reg. no. GS-23–GS-29, PI 632290–PI 632296) were developed jointly by the IAS (Institute for Sustainable Agriculture) and CIFA (Agriculture Research Centre) research Centres at Cordoba, Spain. These lines were derived by four generations of selfing of seven plants of a var. equina Pers. accession (VF 429) of the CIFA Vicia faba germplasm collection that was being evaluated in open field pollination conditions. The lines are maintained by the IAS-CIFA, Leguminous Unit, at Cordoba, Spain, as heterozygotes and multiplied by selfing. Heterozygous plants were identified by progeny testing where seed of heterozygous plants segregated in the ratio of 3 wild type:1 unifoliate.

These unifoliate genetic stocks had a similar leaf and flower phenotype to the unifoliate mutants of V. faba described by Scheibe and Gottschalk (1956) and Sjodin (1964)(1971). Unifoliate mutants are characterized by a transformation of the typical compound leaf into a simple leaf. With regard to the expression of the unifoliate character during the vegetative phase, it was found that mutants could be separated into two groups: obligate, retaining the unifoliate character throughout the vegetative development, and transnormal, exhibiting the unifoliate character only during the early stages of development, after which the shape of the leaf gradually reverts to the normal form (Sjodin, 1971). All seven of our unifoliate genetic stocks are obligate. Flowers are cauliflower-head type and sterile. Evaluation for morphological characteristics show that these genetic stocks differ in leaf heteroblasty (leaf length and complexity), leaf blade, leaf shape among the plant axis, degree of branching (branching from basal or higher nodes), plant height and flower reversion. All the lines differ significantly in leaf complexity, line UN88 showing the highest level of leaf complexity and line UN37 the lowest. Line UN56 shows significantly higher branching from basal nodes than the other six that show the same level of branching. Line UN179 shows significantly higher branching from upper nodes than the others. Line UN37 was the tallest and line UN56 the shortest. Line UN37 was also the line with the longest leaf length blades. Line UN162 had a high degree of flower reversion.

These mutants segregated in a ratio that was very close to 1 wild type:1 unifoliate when crossed with the U4 unifoliate mutant (un-bc¹), whereas all the progeny manifested normal characteristics when crossed with the U8 (un-a⁷) mutant (Sjodin, 1971). Thus, on the basis of the observed segregation of crosses with previously described unifoliate mutants, un-a and un-bc, the unifoliate character in these seven lines was found to be allelic to one of loci conditioning the un-bc unifoliata mutant (Sjodin, 1971).

Unifoliate mutants in other legume species have been described (Sjodin, 1964), including the Unifoliata mutant of Pisum sativum L. (Erikson, 1929). The Unifoliata mutant has been shown to carry a defect in the gene orthologous to LEAFY in Arabidopsis thaliana (L.) Heynh. and floricaula in Antirrhinum majus L. (Hofer et al., 1997). Thus, in V. faba, there are three loci that may correspond to unifoliata in P. sativum L.: un-a, un-b and un-c. These genetic stocks have immediate application for basic research based on the comparative evolution and expression of genes regulating leaf and flower development in different legume genera.

Seeds samples of each genetic stock for research purposes may be obtained from the corresponding author. Recipients of the seed should make appropriate recognition of the source of the germplasm if it is used to develop a new breeding line or cultivar.

ACKNOWLEDGMENTS

We thank Dr. Julie Hofer for her exceptionally helpful suggestions and her assistance in reviewing and improving this manuscript.

NOTES

Registration by CSSA.

Accepted for publication December 31, 2002.

REFERENCES

• Erikson, G. 1929. Erbkomplexe des Rotklees und der Erbsen. Zeitschr f Pflanzenzuchtung 14:445–475.
• Hofer, J., L. Turner, R. Hellens, M. Ambrose, P. Matthews, A. Michael, and N. Ellis. 1997. Unifoliata regulates leaf and flower morphogenesis in pea. Curr. Biol. 7:581–587.[ISI][Medline]
• Scheibe, A., and W. Gottschalk. 1956. Morphologische und entwicklungsgeschichtliche Untersuchungen an einen Blatt- und Blüte-mutamte von Vicia faba. Angew. Bot. 30:14–44.
• Sjodin, J. 1964. Some unifoliata mutants in Vicia faba L. Hereditas 51:279–290.
• Sjodin, J. 1971. Induced morphological variation in Vicia faba L. Hereditas 67:155–180.

This Article Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Suso, M.J. Articles by Moreno, M.T. Search for Related Content PubMed Articles by Suso, M.J. Articles by Moreno, M.T. Agricola Articles by Suso, M.J. Articles by Moreno, M.T.