--M. J. Scanlon, M. G. James, P. S. Stinard and D. S. Robertson
We announce the naming of seven previously undescribed putative Mu-induced defective kernel mutants. Each mutant was placed to chromosome arm via the use of the appropriate B-A translocation. Additional map location data has been generated for five of these mutants using either the waxy-9 series of translocations, linkage to chromosome marker genes and/or RFLP linkage data as indicated in Table 1. Each mutant has tested negative for allelism to all previously described defective kernel mutants located on its respective chromosome arm. The seven mutants are given the names ptd1, ptd2, emp1, emp2, dsc1, ren1 and ren2.
Table 1. Seven Mu-induced dek mutants.
|Name||Former designation||Phenotype||Map information||Lab of Origin|
|ptd1||dek-Mu*1568||pitted endosperm, lethal||1L; (a)||Robertson|
|ptd2||dek-Mu*3193||pitted endosperm, lethal||7L; (b)||Robertson|
|emp1||dek-Mu*2045||empty pericarp, germless||1S; (c)||Robertson|
|emp2||dek-Mu*1047||empty pericarp, germless||2L; (d)||Robertson|
|dsc1||dek-Mu*2058||discolored endosperm, germless||4S; (e)||Robertson|
|ren1||dek-Mu*807||reduced endosperm, opaque, lethal||5L; (f)||Shepherd (Du Pont)|
|ren2||dek-Mu*326||reduced endosperm, lethal||7L; (g)||Shepherd (Du Pont)|
(a) linkage to Kn1, bm2 and bz2 in MNL 65:11.
(b) MNL 65:11.
(c) linkage to wx1 T1-9(8918) in MNL 65:11.
(d) linkage to wx1 T2-9d and linkage to w3 in mapping note by James, MG et al., this issue. RFLP linkage in Lee, M et al., MNL 65:10.
(e) MNL 65:11.
(f) RFLP linkage in Lee et al., MNL 65:10.
(g) RFLP linkage in mapping note by James et al., this issue.
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