Abstract
Field measurements of stomatal diffusive resistance (DR), stomatal conductance (SC), gross photosynthesis (PG), visual leaf index (VLI), petiole nutrient levels (%P, %K, NO3−N), and tuber enzyme activities (ADPG pyrophosphorylase) were recorded during 1978 and 79 using 17 and 19 potato clones, respectively (Solanum tuberosum L.). Many clones differed significantly in DR, SC, and PG. One clone (A6948-4) had significantly greater SC and PG rates than all other clones. The measurements of DR, SC, PG, and %K would appear to have limited value for rapid and extensive selection within potato breeding programs. Correlations are highly variable one season to the next, and several such physiological measurements would have to be combined to provide useful data for selection purposes. However, since measurements of DR, SC, and PG varied significantly and were apparent determinants of tuber yield for some clones, such measurements have potential value for selecting clones to be used as parents in genetic crosses.
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.
