Inheritance of Tribenuron-Methyl Tolerance in Sunflower
-
Ya. N. Demurin
,
A. S. Tronin
Abstract
The genetic stocks of SURES-1 and SURES-2 showed complete tolerance to tribenuron-methyl. No resistance were obtained after observation on 200,000 plants of four VNIIMK breeding lines grown on an experimental field with total area of 5 ha treated with Express at 1x rate. Potential frequency of a dominant gene for tolerance to tribenuron-methyl was estimated less than 5×10−6. Moreover screening both of 700 plants of 39 inbred lines of the genetic collection and 800 plants of M2 four breeding lines did not reveal any resistance. Tolerance to tribenuron-methyl in F1 and F2 in the crosses of SURES-1 and SURES-2 with VNIIMK breeding lines was controlled by one dominant gene. All recessive homozygous hybrid plants of sur sur genotype in the cross were dead with phytotoxicity index of 9 after Express treatment at any rate of tribenuron-methyl from 0.5x to 4x. Heterozygous hybrid plants of Sur sur genotype showed no injury symptoms at 0.5x rate and increasing level of phytotoxicity index of 4, 6 and 7 for 1x, 2x and 4x rates correspondingly. Dominant homozygous hybrid plants of Sur Sur genotype possessed no injury symptoms from 0.5x to 2x rates whereas the phytotoxicity index of 4 was observed at the 4x rate. Consequently there was no difference between dominant homozygote Sur Sur and heterozygote Sur sur with phytotoxicity index of 0 at 0.5x rate. Allelic interaction in a heterozygote Sur sur can vary from complete to partial dominance in accordance with increasing rate of tribenuron-methyl treatment estimating with the phenotypic scale of phytotoxicity index.
Acknowledgments
The authors wish to thank Prof. Dr. Dragan Skoric and Dr. Sinisa Jocic from IFVC, Novi Sad, Serbia for the original seeds of the SURES genotype.
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©2016 by De Gruyter
Articles in the same Issue
- Frontmatter
- Collection of Wild Helianthus anomalus and deserticola Sunflower from the Desert Southwest USA
- Utility of the Colorimetric Folin-Ciocalteu and Aluminum Complexation Assays for Quantifying Secondary Metabolite Variation among Wild Sunflowers
- Early Response of Defense Related Genes to Secondary Downy Mildew Infection in Sunflower Line with Pl6 Gene
- Inheritance of Tribenuron-Methyl Tolerance in Sunflower
- The Virulence of Broomrape (Orobanche cumana Wallr.) in Sunflower Crop in Braila Area, in Romania
- Prospects for Sunflower Cultivation in the Krasnodar Region with the Use of Plant Growth Regulator
- Innovation Project: Cryomutation Selection of Sunflower for Winter Resistance (wint), Ephemeral State (pervotsvet) and Leaflessness (aphylla)
Articles in the same Issue
- Frontmatter
- Collection of Wild Helianthus anomalus and deserticola Sunflower from the Desert Southwest USA
- Utility of the Colorimetric Folin-Ciocalteu and Aluminum Complexation Assays for Quantifying Secondary Metabolite Variation among Wild Sunflowers
- Early Response of Defense Related Genes to Secondary Downy Mildew Infection in Sunflower Line with Pl6 Gene
- Inheritance of Tribenuron-Methyl Tolerance in Sunflower
- The Virulence of Broomrape (Orobanche cumana Wallr.) in Sunflower Crop in Braila Area, in Romania
- Prospects for Sunflower Cultivation in the Krasnodar Region with the Use of Plant Growth Regulator
- Innovation Project: Cryomutation Selection of Sunflower for Winter Resistance (wint), Ephemeral State (pervotsvet) and Leaflessness (aphylla)
