Black Cotaxtla-91 bean, a new seed variety for Veracruz regions.
The most common black seeds employed by the farmers in Veracruz state are the small and dull black seed varieties. By the end of 1991, a new black bean seed variety was released for the tropical region, the black bean Cotaxtla-91. This variety had an average yield of 1477 kg/ha, compared with Jamapa and Negro Huasteco-81 varieties, which yielded 1252 and 1307 kg/ha respectively. These results were obtained from 1987 to 1990, as a result of 14 uniform field trials. The black bean, Cotaxtla-91, was bred at the Cotaxtla Experimental Station in 1983; obtained from a simple two line cross, the D- 149 by 1397. It was later improved by means of individual and mass selection procedures until a good uniformity, high yield and wide range of adaptabilily was obtained. This new variety has an undeterminated growth habit, a bush type plant with intermediate shoots and height fluctuating from 75 to 82 cm. The flowering starts around the 43th day and the harvesting period varies from 90-93 days after planting; this new variety is resistant to rust and shows tolerance to the presence of bean golde n mosaic virus (BGMV).
Main Authors: | , , , |
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Format: | Digital revista |
Language: | spa |
Published: |
Universidad de Costa Rica
2016
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Online Access: | https://revistas.ucr.ac.cr/index.php/agromeso/article/view/25174 |
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Summary: | The most common black seeds employed by the farmers in Veracruz state are the small and dull black seed varieties. By the end of 1991, a new black bean seed variety was released for the tropical region, the black bean Cotaxtla-91. This variety had an average yield of 1477 kg/ha, compared with Jamapa and Negro Huasteco-81 varieties, which yielded 1252 and 1307 kg/ha respectively. These results were obtained from 1987 to 1990, as a result of 14 uniform field trials. The black bean, Cotaxtla-91, was bred at the Cotaxtla Experimental Station in 1983; obtained from a simple two line cross, the D- 149 by 1397. It was later improved by means of individual and mass selection procedures until a good uniformity, high yield and wide range of adaptabilily was obtained. This new variety has an undeterminated growth habit, a bush type plant with intermediate shoots and height fluctuating from 75 to 82 cm. The flowering starts around the 43th day and the harvesting period varies from 90-93 days after planting; this new variety is resistant to rust and shows tolerance to the presence of bean golde n mosaic virus (BGMV). |
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