Apomixis and its Utilization in GrainSorghum-I.Embryology of two Apomictic Parents
作者:
期刊:
Caryologia
(Taylor Available online 1978)
卷期:
Volume 31,
issue 4
页码: 427-433
ISSN:0008-7114
年代: 1978
DOI:10.1080/00087114.1978.10796762
出版商: Taylor & Francis
数据来源: Taylor
摘要:
The embryology of two apomictic parents, R473 and 302 has been investigated. The anther structure conforms to the Monocot type. Cytokinesis takes place by the successive method. Ripe pollen is 3-celled. Though 90% of the pollen is fertile the germination is only about 60%. The embryosac developes aposporously from a centrally located nucellar cell. Fertilization does not take place. The development of embryo and endosperm takes place autonomously under the stimulus of pollination. The present study confirms earlier report of somatic apospory and autonomal development of endosperm and embryo in R473 by RAO and NARAYANA (1968). In addition an additional case of somatic apospory in 302 variety is now reported.
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