Physiological Studies on Nodule Formation: II. The Influence of Delayed Inoculation on the Rate of Nodulation in Red clover

IN of the the introductory rates of nodule paper and of lateral this series root (Nutman, formation 1948) on plants a study of red was clover made of the rates of nodule and lateral root formation on plants of red clover which had been selected for low and high nodule number. It was concluded from the results that infection takes place at definite points on the root deter-mined by hereditary internal factors, and that these predetermined foci of infection are distributed in the root in the same manner as initials of lateral roots. RESP-2803