000			02072nab a22003257a 4500
001			G69421
003			MX-TxCIM
005			20230203205536.0
008			121211b |||p||p||||||| |z||| |
022			_a0016-6731
022			_a1943-2631 (Online)
024			_2https://doi.org/10.1093/genetics/42.4.473
040			_aMX-TxCIM
041			_aeng
090			_aREP-752
100	1		_aMaguire, M.P. _929463
245	1	0	_aCytogenetic studies of zea hyperploid for a chromosome derived from tripsacum
260			_c1957. _aUSA : _bGenetics Society of America
340			_aPrinted
500			_aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=1943-2631
520			_aIntergeneric hybrids of Tripsacum dactyloides and Zea mays were first produced and studied by Mangelsdorf and Reeves (1931)0. Since only unreduced female gametes of these fist generation hybrids functioned, the first backcross to Zea gave 38 chromosome plants of the constitution ZZT, containing two Zea sets each with 10 chromosomes and one Tripsacum set with 18 chromosomes (Mangelsdorf and Reeves 1932). At meiosis in these 38 chromosome plants they reported apparentlyu regular synapsis of the two sets of Zea chromosomes and only occasional synaptic association of Tripsacum and Zea chromosomes, so that gametes having a complete set of Zea chromosomes plus 0 to 18 Tripsacum chromosomes were produced. Since in subsequent backcrosses to Zea as the pollen parent extra Tripsacum chromosomes were transmitted to the progeny with low frequency, Zea plants hyperploid for various numbers of Tripsacum chromosomes were readily isolated for study (Mangelsdorf and Reeves 1939).
546			_aText in English
595			_aRPC
650		7	_2AGROVOC _92841 _aCytogenetics
650		7	_2AGROVOC _97014 _aChromosomes
650		7	_2AGROVOC _912043 _aTripsacum dactyloides
650		7	_2AGROVOC _91314 _aZea mays
773	0		_tGenetics _gv. 42, no, 4, p. 473-486 _dUSA : Genetics Society of America, 1957. _wG444332 _x1943-2631
942			_cJA _2ddc
999			_c20041 _d20041