Abstract
Barnes and Newton1 described tumours in alfalfa caused by a leaf-hopper. They concluded that these were induced by a substance in the insect's saliva, “probably some growth regulator rather than a virus”, and that individual plants vary in their sensitivity to this substance. Examinations of the balsam woolly aphid, Adelges piceae (Ratz.), have led to similar conclusions2.
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.
