000			02073nab a22004097a 4500
001			G80367
003			MX-TxCIM
005			20211006080529.0
008			121211b |||p||p||||||| |z||| |
022	0		_a0025-6153
040			_aMX-TxCIM
082	0	4	_a1998-048996
100	1		_aCarlson, W.R.
245	0	0	_aPollen competition effects in crosses of the B-A translocation TB-9Sb [Zea mays]
260			_c1997
340			_aPrinted
500			_a2 tables; 11 ref. Summary (En)
500			_aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0025-6153
520			_aThe B-A translocation, TB-9Sb, is genetically very well marked. It is, therefore, relatively easy to identify the various chromosomal classes that are produced by meiosis in the translocation heterozygote and other chromosomal constructs of TB-9Sb. Robertson (1967) demonstrated this fact in his study of female transmission of TB-9Sb. In this report, male transmission of TB-9Sb chromosomes is analized, with emphasis on pollen competition effects. A proposal by Beckett (1982) that B-containing pollen outcompetes non B-containing pollen was tested. The results do not show a clear advantage of TB-9Sb pollen over normal pollen, although several explanations that reconcile the data with Beckett's theory are considered. A second test of pollen competition measured survival of the duplicate pollen class, 9 B-9. Some transmission was obtained, but pollen competition had a severely negative effect on this class, as expected
546			_aEnglish
595			_aAC
650	1	0	_aBiological development
650	1	0	_aCell division
650	1	0	_aCell structure
650	1	0	_aCells
650	1	0	_aChromosomes
650	1	0	_aGametes
650	1	0	_aGramineae
650	1	0	_aNucleus
650	1	7	_aPlant genetics and breeding _gNOT IN AGROVOC _2 _91208
650	1	0	_aPlant physiology Reproduction
650	1	0	_aProgeny
650	1	0	_aRecombination
650	1	0	_aZea
773	0		_tMaydica _gv. 42, no. 2, p. 121-126
942			_cJA
999			_c24883 _d24883