Genetic control of the rate of transmission of rye B chromosomes

Article Abstract:

Genetic control of the transmission rate of rye B chromosomes is discussed. Results of crosses between plants from selected lines for high and low B chromosome transmission rate to find the genes controlling the rate indicate they are on the Bs and suggest that the B chromosome poplymorphism is controlled mainly by the Bs.

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One gene determines maize B chromosome accumulation by preferential fertilization; another gene(s) determines their meiotic loss

Article Abstract:

Research has been conducted on B chromosomes. The study of the male B-transmission in the F2 generation has been carried out, and the results demonstrate that the genotypes of high and low male B-transmission rate lines differ in a single major gene.

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Is maize B chromosome preferential fertilization controlled by a single gene?

Article Abstract:

Whether or not maize B chromosome preferential fertilization is controlled by a single gene is discussed. Information on the fourth and fifth generations of selection and the F(sub.1) hybrids between the lines is reported.

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