Abstract
The plants obtained by crosses between C3 and C4 species in Atriplex were determined to be hybrids in views of morphology and δl3C values. One F1 plant of A, triangularis (C3, n=9) x A, rosea (C4, n=9) and one of the reciprocal cross had good pollen and seed fertilities. No prominent differences were observed between these reciprocal Fis in morphological characters. Most of the F2 plants showed a high pollen fertility (more than 70%), and 19 out of the 20 plants so far examined formed normal bivalents. A, triangularis has an opposite phyllotaxis, while A. rosea has an alternate one. Segrega-tion of the F2 for the phyllotaxis was accounted for by assigning two recessive genes to the alternate form. The bundle sheath cells of F2 were many in number but small in size. A very small number of chloroplasts were sporadically observed in the bundle sheath cells in a few plants. Photosynthetic properties of the F2 were examlned in terms of light-photosynthetic curves, transpiration rates and carbon isotope discrimination values (δl3C). In some F3 plants observations were made on the C02 compensation points, photo-respiration activities and several enzyme activities relating to the C4 photosynthesis. No plants with C4-like photosynthetic activities have been found in the F2 nor F3, so far. Possible reasons why no C4-Iike plants were found in the F2 were discussed.
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Claims 13
Claim · model-written summary
Cross progeny were identified as hybrids by morphology and carbon isotope values.
- Taxon
- Atriplex triangularis
Atriplex prostratat0 - Outcome
- hybrids in views of morphology and δl3C valuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plants obtained by crosses between C3 and C4 species in Atriplex were determined to be hybrids in views of morphology and δl3C values.”
t0“Atriplex triangularis (C3) and A. rosea (C4).”
Claim · model-written summary
The F1 plant from the A. triangularis × A. rosea cross had good pollen and seed fertility.
Verbatim
e0“One F1 plant of A, triangularis (C3, n=9) x A, rosea (C4, n=9) and one of the reciprocal cross had good pollen and seed fertilities.”
Claim · model-written summary
The reciprocal F1 plant had good pollen and seed fertility.
Verbatim
e0“One F1 plant of A, triangularis (C3, n=9) x A, rosea (C4, n=9) and one of the reciprocal cross had good pollen and seed fertilities.”
Claim · model-written summary
The reciprocal F1 plants had no prominent morphological differences.
- Taxon
- Atriplex triangularisAtriplex prostratat0
- Outcome
- morphological characterse0
- Direction
- No prominent differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No prominent differences were observed between these reciprocal Fis in morphological characters.”
t0“Atriplex triangularis (C3) and A. rosea (C4).”
Claim · model-written summary
Most F2 plants had pollen fertility above 70%.
- Taxon
- Atriplex triangularisAtriplex prostratat0
- Material
- F2 plantse0
- Outcome
- pollen fertilitye0
- Direction
- highe0
- Value
- more than 70%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most of the F2 plants showed a high pollen fertility (more than 70%)”
t0“Atriplex triangularis (C3) and A. rosea (C4).”
Claim · model-written summary
Normal bivalents formed in 19 of 20 examined F2 plants.
- Taxon
- Atriplex triangularisAtriplex prostratat0
- Outcome
- formed normal bivalentse0
- Value
- 19 out of the 20 plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“19 out of the 20 plants so far examined formed normal bivalents.”
t0“Atriplex triangularis (C3) and A. rosea (C4).”
Claim · model-written summary
A. triangularis had opposite phyllotaxis.
Verbatim
e0“A, triangularis has an opposite phyllotaxis, while A. rosea has an alternate one.”
Claim · model-written summary
A. rosea had alternate phyllotaxis.
- Taxon
- A. roseaAtriplex roseae0
- Outcome
- alternate onee0
Verbatim
e0“A, triangularis has an opposite phyllotaxis, while A. rosea has an alternate one.”
Claim · model-written summary
F2 phyllotaxis segregation was explained by two recessive genes for the alternate form.
- Taxon
- Atriplex triangularisAtriplex prostratat0
- Gene
- two recessive genese0
- Outcome
- phyllotaxise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Segrega-tion of the F2 for the phyllotaxis was accounted for by assigning two recessive genes to the alternate form.”
t0“Atriplex triangularis (C3) and A. rosea (C4).”
Claim · model-written summary
F2 bundle sheath cells were numerous but small.
- Taxon
- Atriplex triangularisAtriplex prostratat0
- Organ / stage
- bundle sheath cellse0
- Outcome
- many in number but small in sizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bundle sheath cells of F2 were many in number but small in size.”
t0“Atriplex triangularis (C3) and A. rosea (C4).”
Claim · model-written summary
A few F2 plants had sporadic chloroplasts in bundle sheath cells.
- Taxon
- Atriplex triangularisAtriplex prostratat0
- Organ / stage
- bundle sheath cellse0
- Outcome
- chloroplasts were sporadically observede0
- Qualifier
- in a few plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A very small number of chloroplasts were sporadically observed in the bundle sheath cells in a few plants.”
t0“Atriplex triangularis (C3) and A. rosea (C4).”
Claim · model-written summary
No F2 plants with C4-like photosynthetic activity were found.
- Taxon
- Atriplex triangularisAtriplex prostratat0
- Material
- F2e0
- Outcome
- No plants with C4-like photosynthetic activitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No plants with C4-like photosynthetic activities have been found in the F2 nor F3, so far.”
t0“Atriplex triangularis (C3) and A. rosea (C4).”
Claim · model-written summary
No F3 plants with C4-like photosynthetic activity were found.
- Taxon
- Atriplex triangularisAtriplex prostratat0
- Material
- F3e0
- Outcome
- No plants with C4-like photosynthetic activitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No plants with C4-like photosynthetic activities have been found in the F2 nor F3, so far.”
t0“Atriplex triangularis (C3) and A. rosea (C4).”