Abstract
Intergeneric hydridization between 6 hexaploid wheat (Triticum aestivum L.) cultivars and 5 inbred rye (Secale cereale L.) lines was used to study the influence of parental genotypes upon chromosome doubling after colchicine treatment. Significant differences were attributed to independent effects of the wheat and rye parents. Self-fertility of the derived amphidiploids was positively correlated with colchicine responsiveness.

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