BGN 12: Coordinator's Report: Haploid barley BARLEY GENETICS NEWSLETTER, VOL. 12, IV. REPORTS FROM COORDINATORS
Kasha, pp. 95-96

IV. 23. Coordinator's Report: Haploid barley.

K. J. Kasha, Crop Science Department, University of Guelph, Guelph, Ontario, Canada N1G 2W1.

Haploid barley is a new section of coordinator's reports for BGN and was established at the 4th International Barley Genetics Symposia held in Edinburgh, July 1981. At the Symposium, a Workshop on Barley Haploidy was held and attended by about 50 researchers. A report will be forthcoming in the Proceedings but one recommendation was for a coordinator to help communication between researchers in this area.

A Questionnaire for haploid researchers was also distributed at the Symposium in Edinburgh and 22 of these were returned. The main points from this Questionnaire may be summarized as follows:

1) For area of interest in haploidy, there were 19 checks for research, 13 for breeding and 4 for teaching (some respondants checked more than one area listed in the Questionnaire).

2) For the haploid production system being used or interested in, 16 specified the Bulbosum Method, 11 anther culture, 4 ovule culture and 7 the Haploid inducer gene.

3) For their objectives and specific uses of haploids, 15 indicated cultivar production, 7 cytogenetics, 5 gene transfer, 5 cell, tissue and organ culture, 5 disease or other selection purposes, 4 genetics, 3 quality, 3 botanical and 1 for population improvement.

4) Related research activities of respondants were 11 for in vitro culture systems, 10 in chromosome doubling, 3 each in incompatibility systems and gene localization, and 2 each in aneuploidy and gene cloning.

5) As to the preferred means of communication, 10 specified the BGN and 8 a Haploid News Bulletin.

6) As to the best place for future haploid barley meetings, 12 specified Haploid Symposia and 12 the International Barley Genetics Symposium.

7) The final question dealt with the area preference if haploid activities were merged with other areas; 14 specified in vitro culture methods, 9 breeding methods, 7 cytogenetics or ploidy, 4 cereals, 4 crop plants, and 3 hybridization.

The results of the Questionnaire support the concept of communication or coordination through the BGN and that a meeting forum of Haploid Symposia or with the International Barley Genetics Symposia are preferable. The strongest area of related interest is in vitro culture methods. Perhaps future International Barley Genetics Symposia should consider a section on Haploidy or combine it in a section with in vitro culture methods. The applications to breeding and cultivar production is also an area of strong interest.

I gather that the Steering Committee for the 3rd International Haploid Symposium is considering a program combined with in vitro culture methods.

As coordinator for the Haploid Barley area, I will be drawing up a list of researchers involved in this area and will circulate it. If you wish to be included, please drop me a note and indicate your area of haploid research and applications or objectives. Once a year I will request information for the Coordinator's Report in BGN. If deemed desirable, this information could be circulated as well.

Over the past year, there have been indications that anther culture procedures for haploid barley production have been much more successful (Kao, 1981; Xu et al., 1981; Friedt and Foroughi-Wehr, 1981), with liquid culture media being useful. The new system of a haploid inducer gene (hap) is also creating much interest (Hagberg and Hagberg, 1980, 1981) but needs more research on the mechanism and frequencies of useful haploids for breeding purposes. The Bulbosum Method continues to expand in use relative to barley breeding programs with two cultivars now licensed for production; Mingo in Canada and Gwylan in New Zealand (the latter produced at Aberystwyth, Wales) (See Kasha and Reinbergs, 1981).

References:

Friedt, W. and B. Foroughi-Wehr. 1981. Anther culture of barley: Plant regeneration and agronomic performance of homozygous diploid progenies. Barley Genetics IV (In press).

Hagberg, A. and G. Hagberg. 1980. High frequency of spontaneous haploids in the progeny of an induced mutation in barley. Hereditas 93:341-343.

Hagberg, G. and A. Hagberg. 1981. Haploidy initiator gene in barley. Barley Genetics IV (In press).

Kao, K. N. 1981. Plant formation from barley anthers cultured with Ficoll media. Z. Pflanzenphysiol. (In press).

Kasha, K. J. and E. Reinbergs. 1981. Production and utilization of haploids in barley. Barley Genetics IV (In press).

Xu, Z., B. Huang and N. Sunderland. 1981. Recent advances in barley anther culture. Barley Genetics IV (In press).

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