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2071550 
Technical Report 
Aluminum tolerance assessment in bush bean cultivars by root growth analysis and hematoxylin staining 
Massot, N; Poschenrieder, C; Barcelo, J 
1991 
BIOSIS/92/11837 
1 
1 
25-32 
eng 
BIOSIS COPYRIGHT: BIOL ABS. The Al toleranc of six commerically available bush bean cultivars (Phaseolus vulgaris L. cv. "Hilds Maxi", "Superba", "Seleccion F-15", "Contender", "Eagle" and "Strike") has been evaluated in hydroponic culture by means of hematoxylin staining of roots, maximum root length growth after short (48 h) and long-term (16 d) exposure to A1, and root growth curve analysis. "Hilds Maxi" and "Superba" were found to be A1-tolerant, while "Eagle" and "Strike" were A1-sensitive. "Contender" and "F-15" showed an intermediate behavior. Evaluation of A1-tolerance after short-term exposure to A1 allowed to distinguish between the most tolerant ("Hilds Maxi") and the most sensitive ("Strike")' cultivar, but rendered misleading results for "Superba" and "Eagle". Screening for A1-tolerance after long-term exposure is required for "Superba" and "Eagle". Screening for A1-tolerance after long-term exposure is required to recognize genotypes which are sensitive to the later occurring indirect