Physical dormancy, a structural feature of the seed coat known as hard seededness, is an important characteristic for adaptation of plants against unstable and unpredictable environments. To dissect the molecular basis of qHS1, a quantitative trait locus for hard seededness in soybean (Glycine max (L) Merr.), we developed a near-isogenic line (NIL) of a permeable (soft-seeded) cultivar, Tachina...

The growth stage of soybean (Glycine max (L.) Merrill) at the time of inoculation was determined to be a factor in the severity of seed coat mottling caused by Bean pod mottle virus (BPMV, Genus Comovirus, Family Comoviridae). The virus caused seed coat mottling, and reduced seed size and seed weight. The effects of different isolates of BPMV on seed coat mottling in soybean were found to vary ...

In angiosperms, double fertilization of the egg and central cell of the megagametophyte leads to the development of the embryo and endosperm, respectively. Control of cell cycle progression in the megagametophyte is essential for successful fertilization and development. Central cell-targeted expression of the D-type cyclin CYCD7;1 (end CYCD7;1) using the imprinted FWA promoter overcomes cycle ...

-1,3-Glucanase ( Glu) expression in seeds plays important roles in the regulation of seed germination, dormancy and in the defence against seed pathogens. A thick -1,3-glucan layer is typical for the seed envelope of cucurbitaceous species, confers seed semipermeability and is degraded during germination. In many species with coat-imposed dormancy, the seed envelope confers a physical constrain...

Protein extracts from soybean (Glycine max [L.] Merr) seed hulls were fractionated by isoelectric focusing and SDS-PAGE analysis and components identified by peptide microsequencing. An abundant 32 kDa protein possessed an N-terminal cysteine-rich hevein domain present in class I chitinases and in other chitin-binding proteins. The protein could be purified from seed coats by single step bindin...

BACKGROUND AND AIMS Coordination of sugar transport and metabolism between developing seeds and their enclosing fruit tissues is little understood. In this study the physiological mechanism is examined using two genotypes of asparagus bean (Vigna unguiculata ssp. sesquipedialis) differing in pod wall and seed growth rates. Pod growth dominates over seed growth in genotype 'Zhijiang 121' but not...

The Arabidopsis thaliana accession Shahdara was identified as a rare naturally occurring mutant that does not liberate seed mucilage on imbibition. The defective locus was found to be allelic to the mum2-1 and mum2-2 mutants. Map-based cloning showed that MUCILAGE-MODIFIED2 (MUM2) encodes the putative beta-D-galactosidase BGAL6. Activity assays demonstrated that one of four major beta-D-galacto...

It was pointed out in a previous report (1) that the inorganic composition of the pulp of Fuerte avocado fruit varies according to the availability of fertilizer elements in orchard soils. Fullmer (2) has shown for these same orchards that the petioles (leaf stalks) and leaf blades from trees in orchards that have received fertilizers containing phosphorus and potassium tended to contain higher...