Genetics of tolerance to high concentrations of boron in Brassica rapa
- 123 Downloads
The inheritance of tolerance to high concentrations of boron in Brassica rapa was studied in F2 and F3 segregating populations. The F1 hybrids were produced from genotypes contrasting in their reaction to boron. The F1 hybrids responded similarly to the tolerant parent indicating that boron tolerance was dominant trait. Segregation patterns for boron tolerance in F2 populations and F3 derived families were established by the measurements of primary root length and tissue boron concentrations. The segregation ratios were explained in terms of two major genes interacting in a dominant epistatic manner to govern tolerance. Evaluation of selected tolerant and susceptible F3 families indicated that tolerant families produced significantly longer primary roots as compared to susceptible families.
KeywordsBrassica rapa Boron Genetics Inheritance Tolerance
- Hobson KB, Armstrong RD, Nicolas M, Connor DJ, Materne MA (2004) Boron tolerance of lentil – highlights of a research program. Proceedings Fourth International Crop Science Congress, Brisbane, Australia. http://www.cropscience.org.au/icsc2004/symposia/6/2/1028_hobsonkb.htmGoogle Scholar
- Kaur S, Norton R, Ford R, Taylor P, Burton W (2003) Studies on boron tolerance in Brassica species. Proceedings 13th Biennial Australian Research Assembly on Brassicas, Tamworth, New South Wales, Australia, pp 99–102Google Scholar
- Nable RO, Lance RCM, Cartwright B (1990) Uptake of boron and silicon by barley genotypes with differing susceptibilities to boron toxicity. Ann Botany 66:83–90Google Scholar
- Sokal RR, Rohlf FJ (1997) Biometry: the principles and practice of statistics in biological research, 3rd ed. WH Freeman company, New York, p 887Google Scholar