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- Title
On the nonautonomy of the small-kernel phenotype produced by B–A translocations in maize.
- Authors
Birchler, James A.
- Abstract
Several of the B–A translocations of maize produce a small-kernel phenotype which is associated with hypoploid endosperms from fertilizations by sperm which result from nondisjunctional events of the B centromere at the second microspore division. Lin (1975) demonstrated that the small-kernel phenotype was not a consequence of the deficient nature of said endosperms, but involved a differential effect of male and female chromosomal regions.The TB-A effect has been examined for evidence of autonomy in mosaics for the most extreme such case known, i.e. the small-kernel effect produced by the compound B–A translocation, 1La-5S8041. Although reduced-sized kernels are formed when the paternal contribution of the 1L-5S element is totally lacking from the endosperm, sectorial loss has no detrimental effect on dry weight. This phenomenon is therefore considered to be nonautonomous.
- Publication
Genetics Research, 1980, Vol 36, Issue 1, p111
- ISSN
0016-6723
- Publication type
Article
- DOI
10.1017/S0016672300019716