Abstract
An experiment was conducted to study physio-biochemical parameters to delineate the molecular basis of resistance against isoproturon in Phalaris minor. The reciprocal crosses of isoproturon resistant and susceptible biotypes of P. minor were made during the first year of an experiment and during the next year, these F1 hybrids with their respective parents were evaluated for physio-biochemical and growth parameters after spraying the weed @ 0.0, 0.5, 1.0 and 1.5 kg ha−1 with isoproturon at 22nd and 30th DAS. The F1s showed heterosis and the order of resistance against isoproturon in the four biotypes was R×S > R > S×R > S. This indicated that the resistance against isoproturon in P. minor is predominantly governed by cytoplasmic inheritance, but the nuclear inheritance also has some contribution.
Abbreviations
- DAS:
-
days after sowing
- IRGA:
-
Intra Red Gas Analyzer
- PAR:
-
photosynthetically activeradiations
- R:
-
isoproturon resistant
- S:
-
isoproturon susceptible
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Kachare, D., Gaur, A.K., Agrawal, S. et al. Isoproturon Resistance in Phalaris minor: Study of Physiobiochemical Parameters in Isoproturon Susceptible and Resistant Biotypes and Their Hybrids. J. Plant Biochem. Biotechnol. 14, 219–222 (2005). https://doi.org/10.1007/BF03263251
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DOI: https://doi.org/10.1007/BF03263251