Early Events in Maize Seed Development | Zendy

Franklin Fong | Zendy; James D. Smith | Zendy; Don E. Koehler | Zendy

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Early Events in Maize Seed Development

Author(s) -

Franklin Fong,

James D. Smith,

Don E. Koehler

Publication year - 1983

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.73.4.899

Subject(s) - fluridone , biology , dormancy , zea mays , abscisic acid , botany , germination , seed dormancy , sprouting , agronomy , gene , genetics

Preharvest sprouting or vivipary is induced in developing maize (Zea mays, inbred Tx 5855 and Va 35) seeds by fluridone, a pyridinone inhibitor of carotenoid biosynthesis. Fluridone has a maximal effect on vivipary at 11 days after pollination (DAP) and little effect at 13 DAP in the inbred maize line Tx 5855. Abscisic acid partially reversed the chemically induced vivipary. Though the precise mechanism of fluridone-induced vivipary is unknown, these results indicate that there are important developmental changes occurring at 11 DAP which reversibly commit the immature embryo to vivipary or dormancy.

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