Soybean leaf architecture (Glycine max (L.) Merrill) (cultivars, foliar venation)

Soybean leaf architecture (Glycine max (L.) Merrill) (cultivars, foliar venation)

1981

REP.SB-0679

The leaflets of the adult leaves, in 21 soybean cultivars, are usually ovate to wide-ovate, with the two lateral ones asymetrical. The apex is mucronate and the base obtuse to round. The venation was classified as curvipinnate, eucamptodromous, with a tendency to palmatepinnate. The size of midvein is weak to moderate and the angle of divergence of the secondary veins narrow acute to moderate acute. There exist intersecondary veins. The terciary veins are perpendiculars, predominantly alternates, weakly percorrentes, and forming an irregular polygonal reticulum and with sometimes a tendency toward irregular poligono-scalariform, being the angle acute-obtuse (exmedial: admedial). Similarly, the quaternary to hexenary veins also form an irregular polygonal recitulum, with vein junctions originated by anastomosis and dichotomous branching with varies shapes being most common ones "lambda and gamma" The areoles are small and medium, well formed, but with irregular shape and varied size. The interareole endings are simple or brnched, with dendroid or irregular form. The marginal vein is irregular curved or arcuate. [AS]

v.17(1):25-49, AGRONOMIA SULRIOGRANDENSE

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