IX.1. Errata in Barley Genetics Newsletter.
 

IX.2. Errata in barley genetics literature.

There have been found various errors in the published literatures which have been causes of confusions and troubles in barley genetics studies. These will be reported in BGN. Please prepare errata and send them to T. Tsuchiya. Some of these errors are shown below.

Editors

References:
1. Nilan, R. A. 1964. The Cytology and Genetics of Barley. Washington State University Press, 278 pp.
2. Robertson, D. W., G. A. Wiebe and F. R. Immer. 1941. J. Amer. Soc. Agron. 33:47-64.
3. Robertson, D. W., G. A. Wiebe and R. G. Shands. 1955. Agron. J. 47:418-425.
4. Robertson, D. W., G. A. Wiebe, R. G. Shands, and A. Hagberg. 1965. Crop Sci. 5:33-43.
5. Tsuchiya, T. 1969. Genetica 40:216-232.
 

IX.3. Correction of barley genetics literature.

1. Gene symbol for awn length.
Schaller et al. (1972) gave the following gene symbols for different awn lengths in barley (Table 1):

Table 1. Genotypes and phenotypes of four awn-types in barley (Schaller et al., 1972).

According to the officially accepted nomenclature and gene symbolization in barley, Lk is a dominant awnless gene in the variety Engleawnless (cf. IX.2. Errata in barley genetic literature, p. --- in this issue). Lk₁lk₁ for long vs. short awn are now officially Lk2 lk2 (Nilan, 1964), even though there still are some confusions in this matter.

Our experiment showed that Lk for awnless is epistatic to Lk2 (Lk₁) for long awn. Therefore, LkLkLk₁Lk₁ of Schaller et al. (1972) should not be long awn provided their gene symbols are correct.

Qualset et al. (1965) show photos of the four genotypes. These photos showed that their LkLkLk₁Lk₁ were full-awned, the stock for lklklk_1lk₁ was not awnless but short-awned, the stock for AAbb (LkLklk_1lk₁) was actually three-quarter (3/4)-awned and aaBB (lklkLk₁Lk₁) was half-awned. Therefore, the gene symbols used by these authors are not correct.

If the symbol and stocks are correct then the genotypes and the phenotypes should be as follows (Table 2):

Table 2. Genetypes proposed by Schaller et al. (1972) and the standard genotypes and phenotypes.

The difference between Tables 1 and 2 is obvious. It is, therefore, necessary to study the genetic nature of the four stocks used by these authors using standard or established genetic stocks. At present we have two old stocks for short awn; lk2 in chromosome 1L and lk5 in chromosome 4. In addition to these stocks, there are some new short-awned mutants designated as ari- by Swedish workers (Gustafsson et al. 1969).

2. Gene symbols for glume characters.

There are considerable confusions in the nomenclature and symbolization of glume characters.

Some experimental data and discussions on this problem are presented by Tsuchiya (1974) in this issue of BGN.

References:
1. Gustafsson, A., A. Hagberg, U. Lundqvist and G. Persson. 1969. Hereditas 62:409-414.
2. Nilan, R. A. 1964. The Cytology and Genetics of Barley. 1951-1962 Research Studies, Monographic Suppl. No. 3, Washington State Univ. 278 pp.
3. Qualset, C. O., C. W. Schaller and J. C. Williams. 1965. Crop Sci. 5:489-494.
4. Schaller, C. W., C. O. Qualset and J. N. Rutgers. 1972. Crop Sci. 531-535.
5. Tsuchiya, T. 1974. BGN 4:76-78.

Prepared by T. Tsuchiya

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