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moonshineaqjg
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Three cells are at the chalazal end and are called antipodals also the central cell contains 2 polar nuclei which are the result of karyokinesis not followed by immediate cell wall formation. Thus, a typical angiosperm embryo-sac at maturity, though 8-nucleate is 7-celled'
The shoot apical meristem of immature embryos 10 to 20 days after pollination from four different maize genotypes was investigated for competence for agroinfection. There was a direct correlation between different morphological stages of the unwounded immature embryos and their competence for agroinfection. Agroinfection frequency was highest in the embryogenic line A188.
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