COMPARISON OF DNA CONTENT PER NUCLEUS BETWEEN JAPANESE AND U.S. VARIETIES OF COMMON WHEAT

Abstract

The microspectrophotometrical study was carried out on the relative amount of nuclear DNA of ten Japanese and 15 U.S. varieties of common wheat. The result showed no difference in DNA content per nucleus among all varieties tested, indicating that changes in the amount of nuclear DNA might, if any, have had a minor significance in the improvement of common wheat.