Abstract
The protein content of sterile anthers and vegetative parts of cytoplasmic malesterile wheat plants was estimated by the measurement of the nitrogen in alcohol-precipitable and -soluble fractions. Sterile anthers showed a remarkable decrease of nitrogen in the alcohol-precipitable fraction, as compared with normal fertile anthers. In contrast, a remarkable increase of nitrogen content especially of amide nitrogen occurred in the alcohol-soluble fraction. Similar abnormal conditions were observed in germinating embryos and young seedlings.It is suggested that abnormal protein metabolism might occur initially at germination and continue during the growth of the plant, with a resulting retardation of growth, reduction of plant height and finally pollen degeneration.
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Claims 4
Claim · model-written summary
Sterile anthers had a remarkable decrease of nitrogen in the alcohol-precipitable fraction compared with normal fertile anthers.
- Taxon
- wheat
Triticum aestivumt0 - Material
- cytoplasmic male-sterilet0
- Organ / stage
- sterile antherse1
- Outcome
- nitrogen in the alcohol-precipitable fractione1
- Direction
- decreasee1
- Comparator
- normal fertile antherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CYTOPLASMIC MALE-STERILE WHEAT”
e1“Sterile anthers showed a remarkable decrease of nitrogen in the alcohol-precipitable fraction, as compared with normal fertile anthers”
Claim · model-written summary
Cytoplasmic male-sterile wheat had a remarkable increase of nitrogen content, especially amide nitrogen, in the alcohol-soluble fraction.
- Taxon
- wheatTriticum aestivumt0
- Material
- cytoplasmic male-sterilet0
- Outcome
- nitrogen contente2
- Direction
- increasee2
- Qualifier
- especially of amide nitrogene2
- Comparator
- normal fertile antherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CYTOPLASMIC MALE-STERILE WHEAT”
e2“In contrast, a remarkable increase of nitrogen content especially of amide nitrogen occurred in the alcohol-soluble fraction”
e1“Sterile anthers showed a remarkable decrease of nitrogen in the alcohol-precipitable fraction, as compared with normal fertile anthers”
Claim · model-written summary
Similar abnormal nitrogen conditions were observed in germinating embryos and young seedlings of cytoplasmic male-sterile wheat.
- Taxon
- wheatTriticum aestivumt0
- Material
- cytoplasmic male-sterilet0
- Organ / stage
- germinating embryos and young seedlingse3
- Outcome
- abnormal conditionse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CYTOPLASMIC MALE-STERILE WHEAT”
e3“Similar abnormal conditions were observed in germinating embryos and young seedlings”
Claim · model-written summary
Abnormal protein metabolism at germination is suggested to lead to pollen degeneration in male-sterile wheat.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- pollen degeneratione4
- Qualifier
- abnormal protein metabolisme4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CYTOPLASMIC MALE-STERILE WHEAT”
e4“It is suggested that abnormal protein metabolism might occur initially at germination and continue during the growth of the plant, with a resulting retardation of growth, reduction of plant height and finally pollen degeneration”