Abstract
Roots of Phaseolus vulgaris `Light Red Kidney,' inoculated with Rhizobium phaseoli strain 14c, produced ineffective nodules. Apex removal from inoculated plants prior to transition to flowering resulted in increased vegetative growth and nitrogenase (acetylene reduction) activity, delayed leaf and nodule senescence, and a greater accumulation of nitrogen in shoots of treated plants than in the ineffectively nodulated control plants. Nodule tissue from treated plants also appeared less disrupted cytologically than that of controls. The peribacteroid membrane was usually intact; few membrane fragments or vesicles were associated with it. The cytoplasm was homogeneous and electron opaque with few Golgi bodies and short segments of rough endoplasmic reticulum. Prevention of flowering in the ineffective association may make the symbiosis more effective by altering source-sink relationships within the plant.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
