Tolerance Test of Some Progenies of Local Upland Rice (Oryza sativa L) Crosses against Aluminum Stress

Sadimantara, Gusti Ray; Muhidin; Leomo, Sitti
July 2014
Australian Journal of Basic & Applied Sciences;Jul2014, Vol. 8 Issue 10, p1
Academic Journal
Background: Improvement of local upland rice cultivars is very promising and has a good potential. In addition, land that used for the development of upland rice is generally acidic soils with the main problem of aluminum toxicity and low pH. Aluminum toxicity resulted in low yield of upland rice in acidic soils. Planting of upland rice varieties that tolerant to aluminum is the most inexpensive and easy to be implemented by farmer. Objective: to obtain pure line of local upland rice derived from crossing that tolerance to Al toxicity and high yielding potential on acidic soils. Results: there was a high variation in the observed variables. Almost of F2 progeny have RRE values > 0.5 (resistant to Al stress). Similarly, the ratio of root-shoot showed variation among evaluated progenies. Phenotypically, in the sensitive plant progenies, an addition of 60 ppm Al inhibited root growth so it's very short and thin. Conclusion: The differences in resistance to Al among F2 progeny of crosses was caused by inherited genetic variation of the parental crosses. We proposed to use the progeny of 33/BU3 as material selection in order to obtain the Al-resistant pure line.


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