Some physiological and genetic parameters of iron deficiency in chickpeas.
1986
Abu Mikdashi R.
This study was conducted to determine the relationship between visual symptoms of Fe-deficiency and other plant parameters as well as the inheritance of lime-induced chlorosis using chickpea accessions of known reactions to Fe-chlorosis. In soils containing 32.0, 63.5 and 82.0% CaCO3, the susceptible accessions ILC 2643 and ICCL 81192 expressed typical symptoms of Fe-chlorosis, which were alleviated by the addition of Fe-EDDHA. In the 82.0% CaCO3 soil accessions ILC 263 and ILC 482 remained resistant whereas in the Lebanese local resistance broke to show intermediate tolerance. Both chlorophyll and active Fe decreased as chlorosis intensified while K, Mg and Mn concentrations increased. Total iron fluctuated and was only slightly related to Fe-chlorosis. A highly significant relationship was found between active Fe and the ratios of P/total Fe and Mn/total Fe. The interaction between genotypes and soil treatments was apparent. In the inheritance study, the F1 generations of the crosses involving ICCL 81192 with ILC 263, ILC 482 and ILC 1930 indicated that susceptibility to Fe-chlorosis is controlled by recessive gene(s). However, segretating ratios in the F2 and backcross to the susceptible parent generations were inconclusive with respect to the number of genes and the type of gene action involved. The high level of resistance for Fe-deficiency observed in ILC 263 and ILC 482 under a wide range of conditions can be utilized in breeding programs.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Wolters Kluwer