Corn Genotypes Show Distinctive Growth Responses to Various Herbicides
| Autor: | C. F. Reinhardt, L. Kanyomeka |
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| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | Journal of New Seeds. 2:13-28 |
| ISSN: | 1522-9025 1522-886X |
| DOI: | 10.1300/j153v02n04_02 |
| Popis: | Corn (Zea mays L.) inbreds and hybrids may respond differently to specific herbicides. Screening corn inbreds and hybrids for tolerance to herbicides is essential as this will enable producers to reduce the risk of crop injury by applying appropriate herbicides. A study was conducted to determine the tolerance of corn to herbicides and to compare results in the greenhouse and in the field. Both inbreds and hybrids demonstrated significant differences in their response to herbicides. Hybrids were generally more tolerant than inbreds. Of the herbicides, metazachlor was the most injurious to corn genotypes. Differential recovery from herbicide injury was observed in the field, and some genotypes recovered fully during the growing season while others did not. Some genotypes showed significant reductions in shoot dry mass while their root dry mass was not reduced; the opposite effect was also noted for certain genotype/herbicide combinations. Percentage reduction in grain yield in the field was positi... |
| Databáze: | OpenAIRE |
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