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- Title
EFFECTS OF VARIOUS DOSES OF THE FOCUS ULTRA HERBICIDE ON THE GRAIN YIELD OF A SINGLE CROSS MAIZE HYBRID WITH DIFFERENT NUMBER OF CTM ALLELES.
- Authors
Živojinović, Marko; Prodanovic, Slaven; Božinović, Sofija; Vančetović, Jelena; Simić, Milena
- Abstract
There is a question related to the use of ultra hybrids: Is it sufficient to introduce just one CTM (cycloxydim tolerant maize) allele (originating from either the male or the female component) into a hybrid? Or is it necessary to introduce both alleles (both male and female component of a given hybrid have this allele) in order to achieve a needed degree of protection against weeds by the application of the Focus Ultra herbicide? There are no available literature data on this topic. We have contacted our colleagues from Novi Sad and found out that it was their opinion that alleles from both components were necessary. On the other hand, our colleagues from the BASF company had a quite opposite opinion. In order to solve this dilemma, we performed a study and hoped that we would get the answer regarding the effects of different doses of the Focus Ultra product on grain yield of a single cross maize hybrid with different number of CTM alleles. Considering the obtained results, it can be concluded that maize resistance to the Focus Ultra can be achieved by the introduction of only one CTM allele (heterozygote) into a single cross maize hybrid. From the selection aspect, this is favourable circumstance for the introduction of new inbreds into maize hybrids for a DUO protection system. At that, one component already has a CTM homozygous allele, while the other component is crossed to it in order to develop an Ultra hybrid. Based on achieved results, it is observable that a very moderate positive female effect was pronounced in the inheritance of maize tolerance to the active ingredient cycloxydim. This means that it is better if the female component has a CTM homozygous allele.
- Subjects
NOVI Sad (Serbia); SERBIA; GENE frequency; CORN; HERBICIDES; HYBRID corn; GENETIC carriers; WEED control; CROP management
- Publication
Herbologia, 2009, Vol 10, Issue 2, p49
- ISSN
1840-0809
- Publication type
Article