Plant Physiol. Illumina
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Plant Physiology 92:534-537 (1990)
© 1990 American Society of Plant Biologists

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (5)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Hubick, K. T.
Right arrow Articles by Henderson, S. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Hubick, K. T.
Right arrow Articles by Henderson, S. A.
Agricola
Right arrow Articles by Hubick, K. T.
Right arrow Articles by Henderson, S. A.
Metabolism and Enzymology

Carbon Isotope Discrimination Varies Genetically in C4 Species

Kerry T. Hubick, Graeme L. Hammer, Graham D. Farquhar, Len J. Wade, Susanne von Caemmerer and Sally A. Henderson

Plant Environmental Biology Group, Research School of Biological Sciences, Australian National University, GPO Box 475, Canberra City, ACT 2601, Australia, Queensland Department of Primary Industries, GPO Box 46, Brisbane, QLD 4001, Australia, Queensland Department of Primary Industries, PO Box 81, Emerald, QLD 4720, Australia

Carbon-isotope discrimination ({Delta}) is used to distinguish between different photosynthetic pathways. It has also been shown that variation in {Delta} occurs among varieties of C3 species, but not as yet, in C4 species. We now report that {Delta} also varies among genotypes of sorghum (Sorghum bicolor Moench), a C4 species. The discrimination in leaves of field-grown plants of 12 diverse genotypes of sorghum was measured and compared with their grain yields. Discrimination varied significantly among genotypes, and there was a significant negative correlation between grain yield and {Delta}. The variation in {Delta} may be caused by genetic differences in either leakiness of the bundle-sheath cells or by differences in the ratio of assimilation rate to stomatal conductance. At the leaf level, the former should be related to light-use efficiency of carbon fixation and the latter should be related to transpiration efficiency. Both could relate to the yield of the crop.




This article has been cited by other articles:


Home page
 Crop Sci.Home page
M. Balota, W. A. Payne, W. Rooney, and D. Rosenow
Gas Exchange and Transpiration Ratio in Sorghum
Crop Sci., November 24, 2008; 48(6): 2361 - 2371.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1990 by the American Society of Plant Biologists