MUTATION IN RICE INDUCED BY X-RADIATION

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Ho Tsu K'o Hsueh

OSTI ID:4839494

Wang, C

Several varieties of rice were irradiated with x-rays dry seeds, soaked seeds, and young plants. Sterile plants were produced. Seeds taken from sterile plants segregated into fertile and sterile strains in the X/sub 2/, X/sub 3/ and X/sub 4/ genera tions. The induced strains were grouped into five segregation tyoes A, B, C, D, and E according to their mode of segregation. The pollen mother cells of the sterile strains were examined at the meiotic division, a large number of them were found to have quadrivalent and univalent chromosomes. The shape of the quadrivalent chromosomes is predominantly that of a ring though other shapes also occur. Reciprocal translocation of chromosomes at meiotic division was tlte cause of the quadri- and univalent chromosomes. Morphological and physiological changes were observed in the mutated strains but the characteristics were recessive. (TTT)

• Research Organization: National Taiwan Coll. of Agriculture, Japan
• NSA Number: NSA-16-020179
• OSTI ID: 4839494
• Journal Information: Ho Tsu K'o Hsueh, Journal Name: Ho Tsu K'o Hsueh Vol. Vol: 2: No. 4
• Country of Publication: Country unknown/Code not available
• Language: Chinese

Related Subjects

BIOLOGY AND MEDICINE
CEREALS
CHROMOSOMES
CYTOLOGY
GENETICS
MEIOSIS
MITOSIS
MUTATIONS
PLANTS
POLLEN
QUANTITY RATIO
REPRODUCTION
RICE
SEEDS
X RADIATION