摘要
用石蜡切片和塑料切片法 ,对中国春与粗山羊草正、反交授粉后不同时间固定的子房进行了胚胎学研究。结果表明 ,虽然正、反交均能受精发育 ,但两者的受精率和成胚率相差极大。正交组合的平均受精率和成胚率分别为2 3.75 %和 4 .5 8% ;而反交组合的平均受精率和成胚率分别为 87.0 8%和 82 .0 8%。尽管如此 ,正交所形成的正常胚的质量比反交形成的胚质量要好。在反交组合中 ,受精发育过程较正常 ,而在正交组合中受精过程延迟 ,多数受精卵败育。本文进一步证实了反交组合的成胚率高于正交组合 ;
Observation was made on the fertilization and embryo development in the original and reciprocal crosses between T.aestivum Chinese Spring and Ae. tauschii with the paraffin and plastic techniques. In the original cross, the average ratios of fertilization and embryo formation were respectively 23.75% and 4.58%; However, in the reciprocal cross, the average ratios of fertilization and embryo formation were respectively 87.08% and 82.08%. The embryos can be obtained in both of crosses, but the quality of embryos in the original was better than that in the reciprocal. The embryological results corroborated our previous conclusions that the ratio of embryos obtained in the reciprocal was higher than that in the original, whereas the ratio of embryo revived in the original was higher than that in the reciprocal.
出处
《作物学报》
CAS
CSCD
北大核心
2002年第2期170-174,共5页
Acta Agronomica Sinica
基金
国家自然科学基金资助 (3 0 0 70 465 )
山东省自然科学基金资助项目 (Q97D0 613 8)
