FORAGE PROPERTIES OF CORN AND HAMAGRASS HYBRIDS

Forage value and yield of green mass per unit of acreage are the key points in selection of forage crops. Corn is considered to be one of these plants. Its grain and green mass have good forage properties and are widely used when feeding cattle and poultry. Eastern hamagrass (Tripsacum dactyloides) is a wild corn counterpart. It is widespread on the hollows of North and South America. In recent decades, it has been recognized by livestock farmers h as a pasture and forage crop. More than 10 commercial varieties are sold in the USA. Hamagrass is highly productive and nutritional for the hay obtained from it. The paper evaluates forage properties of apomictic corn-tripsacum hybrids, when two corn genomes from the lines participating in hybrid breeding for producing F1 seeds were added to 36 hamagrass chromosomes. The authors compared forage properties of the hybrids received and assessed their potential yield on green mass. The results have shown, that the hybrid samples, two corn genomes from the lines participating in hybrid breeding for producing F1 seeds were added to 36 hamagrass chromosomes, surpass the indexes of plants when 20 chromosomes from one of the forms of corn were added for hybridization. The authors’ theoretical estimation of green mass yield of corn-tripsacum hybrids pro a hectare is about 700 centners.

hamagrass, corn, corn and tripsacum hybrids, heterosis, forage parameters, livestock analysis, sugars, starch, aminoacids

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