Introgression of tolerance donor to low pH and toxicity of aluminium in winter wheat hybrids
1999
Rychtarik, J. | Macuha, P.
In the field and laboratory experiments the progenies of winter wheat in F1 and F2 generations from reciprocal crossing of domestic variety Regia with tolerant variety Albota (ROM) and sensitive variety Scout 66 (USA) for tolerance and sensitivity to low pH and Al3 ions were evaluated. Testing for tolerance was performed at juvenile plants of winter wheat in laboratory conditions. Experimental plants were grown hydroponically in acid nutrient solution (pH4 +- 0.2) with 10 ppm AI3 ions added in the form AlCl3.6H20 in the climatically controlled growth chamber. After ten days of cultivation length and weight of roots and leaves were measured. Donor of tolerance (Albota) did not achieve grain yield formation parameters of domestic registered varieties. Progenies of variety Albota and Scout with Regia did not achieve grain yield parameters of domestic registered standard varieties, but they had higher parameters of tolerance than a variety Regia and their progenies with variety Scout. Observed traits were heritable intermediary and among reciprocal combinations no significant differences were found out. The variability was caused mainly by varieties and progenies. Relatively high genetic parameters of tolerance traits are in progenies of variety Albota a good assumption for selection of more tolerant genotypes which can be realised only from sufficiently wide select population
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