TY  - JA
AU  - Kihara,H.
AU  - Tsunewaki,K.
TI  - Production of polyploid wheat by nitrous oxide
SN  - 0021-4280
PY  - 1960///
CY  - Japan
PB  - The Japan Academy
KW  - AGROVOC
KW  - Polyploidy
KW  - Wheat
KW  - Nitrous oxide
KW  - Experimentation
N1  - Free Access
N2  - N2O 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
T2  - Proceedings of the Japanese Academy
ER  -