Experiments on the effect of genotypic environment on the expression of the nod4 gene, responsible for supernodulation in pea, were performed. The genotypic background was found to affect the manifestation of both major symbiosis-related traits (number of nitrogen-fixing bacterial nodules and nitrogenase activity) and productivity-related traits (stem height, seed number, and seed weight), which form the pleiotropic complex of the mutant gene. Using recurrent selection, we developed supernodulating lines significantly exceeding the original mutant line and studied them up to generations F5-F6.
View Article and Find Full Text PDFUrol Nefrol (Mosk)
November 1994
A quantitative karyological analysis of immature male sex cell (IMSC) composition in ejaculate of males with normal spermogram (a relative standard), oligo-, astheno-, terato- or azoospermia has been made. The specimens were obtained from 100 patients. Because of IMSC absence, a part of the 150 specimens lacked informative value.
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