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Apomicticsymptomsintheaspectofembryologyinasorghumline296B

DOI: 10.7668/hbnxb.1993.S2.002, PP. 10-15

Keywords: Sorghumbicolor(L.)Moench,apomixis,aposporous,296B

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Abstract:

ThepresenceoffacultativeapomixisInline296Bwasprovedbytheembryologicalstudy.Thetwinembryosacswereobservedatflorescence.Theautonomousdevelopmentofem-bryowasconfirmedbymultiplecellproembryoexistingwithundevelopedpolarnucleiInoneembryosac.Cellstructureandsizeofapomicticproembryoweredifferentfromsexualproembryo.Thestructuralfeatureofproembryocanbeusedtodistinguishapomicticproembryowithdevel-opedendospermfromsexualembryo.Theapomicticdevelopmentinthislineisattributedtoaposporoustype.ThefrequencyofapomixisIsatleast16—21%.Theapomicticcharactersandthepotentialforfixingheterosisinline296Bwasdlscussedinthepresentpaper.

References

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