II.34 Further information on the inheritance of some striped (streaked) mutations in barley.
T. Tsuchiya. Department of Agronomy, Colorado State University, Fort Collins, Colorado 80523, USA.
Inheritance of several white striped and yellow striped mutants have been reported by the present author (Tsuchiya, 1972, 1973, 1974). Two stocks (T 12-26 and T 2-28) were first considered to be allelic to wst (Tsuchiya, 1972, 1973), but later corrected to be maternal inheritance (Tsuchiya, 1974). Two more striped stocks (B15-11 and T1-27) have been reported to be maternally inherited mutants (Tsuchiya, 1974). This paper reports additional evidence to substantiate these previous results by critical analysis.
The results are shown in table 1.
Table 1. Phenotype of the F1 hybrids from various crosses involving four striped mutants.
These findings, together with the previously reported results, showed that these four streaked mutants are all maternal inheritance.
From the experience of the present author, it is recommended that the following method should be used in the study of inheritance and allelic relationships of chlorophyll mutations in barley to detect maternal inheritance:
1. Reciprocal crosses should be made between chlorophyll mutation and
known green parents.
2. In allelism testing, known chlorophyll mutant stocks should be used
as the female parent and the new mutant lines as the male.
3. It is also desirable to test the F2 population to substantiate the
results of F1 hybrids.
In these ways, maternal or Mendelian nature of inheritance, allelic relations, and the dominance or recessive nature would be readily detected.
References:
Tsuchiya, T. 1972. BGN 2: 80-87.
Tsuchiya, T. 1973a. BGN 3: 68-69.
Tsuchiya, T. 1973b. BGN 3: 71-72.
Tsuchiya, T. 1974. BGN 4: 86-88.
Tsuchiya, T. 1975. BGN 5: 60-62.
