Pollen-pistil interactions result in reproductive isolation between Sorghum bicolor and divergent Sorghum species.

Crop Science | July 1, 2005| | Copyright

SORGHUM is a major cereal crop of marginal rainfall areas of the tropics, with selected varieties widely grown in temperate regions. Recent annual grain sorghum yields have exceeded 61 000 000 Mg worldwide, with 13 207 000 Mg produced in the USA (Smith, 2000).

Twenty-five species form the genus Sorghum (Lazarides et al., 1991) which consists of five subgenera or sections, Eu-sorghum, Chaetosorghum, Heterosorghum, Para-sorghum, and Stiposorghum (Garber, 1950; deWet, 1978). Members of the Eu-sorghum section have a natural range through Africa and southern Asia. The ...

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