000			01811nab a22003257a 4500
001			G71245
003			MX-TxCIM
005			20230712190208.0
008			121211b |||p||p||||||| |z||| |
022			_a0021-4280
024			_2https://doi.org/10.2183/pjab1945.36.658
040			_aMX-TxCIM
041			_aeng
090			_aREP-969
100	1		_aKihara, H. _930144
245	1	0	_aProduction of polyploid wheat by nitrous oxide
260			_c1960. _aJapan : _bThe Japan Academy,
340			_aPrinted
500			_aFree Access
520			_aN2O treatment proved to be an efficient means of producing polyploids in wheat. Spikes of Triticum dicoccum Khapli which were pollinated 24 hours before treatment were exposed to nitrous oxide at the pressure of 3 or 6 atmospheres for each of the 5, 10, and 15 hour periods and then cultured in an artificial medium. Treatments for 5 hours did not induce any aberration of chromosome number. Treatments at both 3 and 6 atm, pressures for 10 or 15 hours produced tetraploids and aneuploids in 70 per cent or more of plants obtained from treated flowers. A great majority of the aneuploids were hypotetraploids. The best success was obtained by the treatment at 6 atm, pressure for 15 hours, by which 98 per cent of treated florets gave polyploids and aneuploids. The advantage of N2O treatment over colchicine treatment as a means of producing polyploids was discussed.
546			_aText in English
595			_aRPC
650		7	_2AGROVOC _93143 _aPolyploidy
650		7	_2AGROVOC _91310 _aWheat
650		7	_94669 _aNitrous oxide _2AGROVOC
650		7	_2AGROVOC _94432 _aExperimentation
700	1		_aTsunewaki, K., _9729
773	0		_tProceedings of the Japanese Academy _gv. 36, no. 10, p. 658-663 _dJapan : The Japan Academy, 1960 _x0021-4280
942			_cJA _2ddc
999			_c20920 _d20920