NOTICE OF NAMING AND RELEASE OF RUBI, A NEW HIGH YIELDING OPAQUE BLACK COMMON BEAN CULTIVAR FOR TROPICAL AND SUBTROPICAL AREASOF VERACRUZ AND CHIAPAS, MEXICO

摘要

The Cotaxtla Experiment Station (CECOT) of the National Institute for Forestry, Agriculture and Livestock Research (INIFAP) announces the naming and release of Rubi, an improved high-yielding black bean, with small seed size (17.5 g 100 seeds'), shapeand appearance (opaque seed coat) characteristics that meet the standards of the black bean seed class of domestic markets. This new bean cultivar exhibits the type-II upright short vine (indeterminate) growth habit (Singh, 1982). Plants average 42.5 cmin height, produce purple blossoms, flowers at 36-40 d, matures at 69-73 d, pods are yellow-cream in color. Rubi is well adapted to tropical and subtropical production areas of Veracruz and Chiapas in southeastern Mexico, and exhibits tolerance to terminal drought and low incidence of Bean golden yellow mosaic virus (BGYMV), since it carries the bgm- gene that confers resistance to the leaf chlorosis. It possesses the single dominant hypersensitive / gene that conditions resistance to the seed-borne Bean common mosaic virus (BCMV), while the majority of the landraces together with Negro Jamapa commonly used by farmers are highly susceptible.