NASC

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Phenotype

embryo lethal; viviparous embryos with cotyledons partially transformed into leaves; embryos sensitive to abscisic acid; embryos have reduced hypocotyl, cotyledons that remain green late in development, and reduced protein and lipid bodies; some trichomes form on cotyledons after germination; internal cells of cotyledons enlarge, vacuolate and resemble leaf mesophyll cells; intercellular spaces are prominant in cotyledons; enlarged shoot apical meristem; stomata are found on surface of cotyledons of mutant embryos; mature seeds are desiccation intolerant; root apex is active in viviparous seeds; immature mutant embryos germinated prior to desiccation produce plants that appear normal for other characteristics; maintained as heterozygote.