Photosynthetic characteristics of reciprocal backcrosses between F/sub 1/ hybrid (C/sub 3/-C/sub 4/ x C/sub 4/) and C/sub 4/ Flaveria species. [Flaveria floridana; Flaveria brownii]
Several biochemical parameters were examined in the reciprocal backcrosses between F/sub 1/ hybrid (F. floridana x F. brownii, number20) and F. brownii. The delta/sup 13/C values of the reciprocal backcrosses are either similar or closer to that of the C/sub 4/ parent: -15.9 per thousand for F/sub 1/ hybrid x F. brownii (number271) and -17.8 per thousand for F. brownii x F/sub 1/ hybrid (number399). The values for F. brownii, the F/sub 1/ hybrid, and F. floridana were -16.1, -22, and -26.6 per thousand, respectively. Consistently, activities of key C/sub 4/ enzymes, PEPC, NADP-MDH, NADP-ME, Asp-AT and Ala-AT were elevated relative to the F/sub 1/ hybrid, approaching that of the C/sub 4/ parent. Furthermore, after 8s of photosynthesis in /sup 14/CO/sub 2/, 79 and 80% of the total soluble /sup 14/C products were C/sub 4/ acids in the backcrosses number271 and number399, respectively, similar to that of the C/sub 4/ parent (78%). The results suggest that C/sub 4/ characteristics were further transferred and expressed in the backcrosses. Anatomical and physiological features will also be characterized to evaluate the overall performance of C/sub 4/ photosynthesis in these backcrosses.
- Research Organization:
- Washington State Univ., Pullman
- OSTI ID:
- 5903391
- Report Number(s):
- CONF-8707108-; TRN: 87-037278
- Journal Information:
- Plant Physiol., Suppl.; (United States), Vol. 83:4; Conference: Annual meeting of the American Society of Plant Physiologists, St. Louis, MO, USA, 19 Jul 1987
- Country of Publication:
- United States
- Language:
- English
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Heritability and expression of C sub 4 photosynthesis in hybrids between C sub 3 -C sub 4 and C sub 4 Flaveria
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Related Subjects
C4 SPECIES
HYBRIDIZATION
CARBON 13
CARBON 14 COMPOUNDS
CARBON DIOXIDE FIXATION
ENZYME ACTIVITY
GENETICS
LABELLED COMPOUNDS
PHENOTYPE
PHOTOSYNTHESIS
PLANT BREEDING
PROGENY
TRACER TECHNIQUES
BIOLOGY
CARBON ISOTOPES
CHEMICAL REACTIONS
EVEN-ODD NUCLEI
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
NUCLEI
PHOTOCHEMICAL REACTIONS
STABLE ISOTOPES
SYNTHESIS
550401* - Genetics- Tracer Techniques
550201 - Biochemistry- Tracer Techniques