Abstract
Using Triticum aestivum L.cv.Chinese Spring pollinated with Dasypyrum villosum (L.)Candargy,fertilization and early embryo development were observed.The pollens of D.villosum germinated normally on the stigma of T.aestivum ,and the pollen tubes grew into the style and entered the embryo sacs.Of the 210 ovaries observed,13 81% were double fertilization and had both embryo and endosperm,and 16 19% had only embryo and 4 76% had only endosperm.The total rate of fertilization was 34 76%,while the total rate of embryo formation was 30 00%.Because the endosperm development was slower than that of the embyo,the endosperms were abnormal or were absenct or vanished later,it was very difficult to produce viable mature seeds.If embryo reskue technique was employed at the early stage of hybrid embryo development 7 11d after pollination,it could increase greatly the frequency of hybrid plant survival.Cytoembryological evidence was given to demonstrate the high frequencies of fertilization and embryo formation in the cross between wheat and D.villosum.
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Claims 9
Claim · model-written summary
Dasypyrum pollen germinated normally on wheat stigmas and pollen tubes entered embryo sacs.
- Taxon
- T.aestivum
Triticum aestivume0 - Interactor
- D.villosum
Dasypyrum villosume0other - Outcome
- pollens of D.villosum germinated normallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pollens of D.villosum germinated normally on the stigma of T.aestivum ,and the pollen tubes grew into the style and entered the embryo sacs”
Claim · model-written summary
Double fertilization with embryo and endosperm occurred in 13 81% of observed ovaries.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Organ / stage
- ovariese0
- Outcome
- double fertilizatione0
- Value
- 13 81%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Of the 210 ovaries observed,13 81% were double fertilization and had both embryo and endosperm”
t0“Triticum aestivum”
Claim · model-written summary
Only embryo formed in 16 19% of observed ovaries.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Outcome
- only embryoe0
- Value
- 16 19%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“16 19% had only embryo”
t0“Triticum aestivum”
Claim · model-written summary
Only endosperm formed in 4 76% of observed ovaries.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Outcome
- only endosperme0
- Value
- 4 76%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“4 76% had only endosperm”
t0“Triticum aestivum”
Claim · model-written summary
Total fertilization rate was 34 76%.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Outcome
- total rate of fertilizatione0
- Value
- 34 76%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The total rate of fertilization was 34 76%”
t0“Triticum aestivum”
Claim · model-written summary
Total embryo formation rate was 30 00%.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Outcome
- total rate of embryo formatione0
- Value
- 30 00%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total rate of embryo formation was 30 00%”
t0“Triticum aestivum”
Claim · model-written summary
Endosperm developed more slowly than embryo and was abnormal, absent or later vanished.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Organ / stage
- endosperme0
- Outcome
- endosperm developmente0
- Direction
- slowere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the endosperm development was slower than that of the embyo,the endosperms were abnormal or were absenct or vanished later”
t0“Triticum aestivum”
Claim · model-written summary
Abnormal or missing endosperm made viable mature seed production very difficult.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Outcome
- produce viable mature seedse0
- Qualifier
- the endosperms were abnormal or were absenct or vanished latere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the endosperms were abnormal or were absenct or vanished later,it was very difficult to produce viable mature seeds”
t0“Triticum aestivum”
Claim · model-written summary
Early embryo rescue at 7 11 days after pollination could greatly increase hybrid plant survival.
- Taxon
- Triticum aestivumTriticum aestivumt0
- Treatment
- embryo reskue techniquee0
- Outcome
- frequency of hybrid plant survivale0
- Direction
- increase greatlye0
- Qualifier
- 7 11d after pollinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“If embryo reskue technique was employed at the early stage of hybrid embryo development 7 11d after pollination,it could increase greatly the frequency of hybrid plant survival”
t0“Triticum aestivum”