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Registration of 'Amadeus 77' small red common bean.

Small red dry bean (Phaseolus vulgaris L.) 'Amadeus 77' (Reg. no. CV-221, Pl 634536) was developed at the Escuela Agricola Panamericana lEAP), Zamorano, Honduras, and released for Central America in collaboration with the National Bean Programs of Honduras, El Salvador, Nicaragua, and Costa Rica and the University of Puerto Rico in 2003. Amadeus 77 is a good yielding cultivar with resistance to diseases and heat.

Amadeus 77 was an [F.sub.2:6] derived line from the cross 'Tio Canela 75'/DICTA 105. Tio Canela 75 has small red seeds and resistance to Bean golden yellow mosaic virus (BGYMV, a geminivirus) (Rosas et al., 1997). DICTA 105 is a bean pod weevil (Trichapion godmani Wagner) resistant small red breeding line from the Centro Internacional de Agricultura Tropical (CIAT), Call, Colombia, and the Direccion de Ciencia y Tecnologia Agropecuaria (DICTA), Tegucigalpa, Honduras.

The [F.sub.1] was grown in a screen house. Individual [F.sub.2] plants were selected in the field at Zamorano for erect growth habit, Type II, and early to intermediate maturity ([less than or equal to] 70 d). The [F.sub.3] to [F.sub.6] families were evaluated during 1996 to 1998 for the above traits and for resistance to natural incidence of Bean common mosaic virus (a potyvirus), anthracnose [caused by Colletotrichum lindemuthianum (Sacc. & Magnus) Lams.-Scrib.], angular leaf spot [caused by Phaeoisariopsis griseola (Sacc.) Ferraris], and web blight [caused by Thanatephorus cucumeris (Frank) Donk], and artificial inoculations with local isolates of Xanthomonas axonopodis pv. phaseoli Smith Dye [the cause of common bacterial blight (CBB)]. From January to April 1997, [F.sub.4] families were screened under drought stress ([approximately equal to] 180 mm water applied), using sprinkler irrigation, and selected [F.sub.6] families were evaluated under natural incidence of BGYMV at Comayagua from October to December. Plants within BGMYV-resistant families were harvested in bulk. Selection for small red seed was practiced in every generation.

In 1998, the average yield of Amadeus 77 across nine locations in the Central America Bean Adaptation Nursery was 1217 kg [ha.sup.-1], compared with 734 kg [ha.sup.-1] for the local check. In 1999 and 2000, Amadeus 77 was included across 15 locations in the Central America Yield and Adaptation Trial (ECAR). In 1999, average seed yield of Amadeus 77 was 1970 kg [ha.sup.-1] compared with 1741 kg [ha.sup.-1] and 1803 kg [ha.sup.-1] for the local and elite checks, respectively. In 2000, the average seed yield across 13 locations in ECAR was 1913 kg [ha.sup.-1] for Amadeus 77, 1347 kg [ha.sup.-1] for the local, and 1730 kg [ha.sup.-1] for the elite checks (Rosas and Escoto, 2003).

In diverse regions of Honduras in 2001 and 2002, Amadeus 77 produced an average yield of 2491 kg [ha.sup.-1], whereas 'Dorado' averaged 1980 kg [ha.sup.-1] and the farmers check produced 2339 kg [ha.sup.-1]. In on-farm trials in 2002 across 71 locations in 16 municipalities in Honduras, the average yield of Amadeus 77 was 1600 kg [ha.sup.-1] compared with 1270 kg [ha.sup.-1] for the farmers check. Also, Amadeus 77 was superior to the landraces for resistance to BGMYV, anthracnose, CBB, and angular leaf spot.

In 35 yield trials in the four agricultural regions in El Salvador in 2002, Amadeus 77 produced 1085 kg [ha.sup.-1], compared with 866 kg [ha.sup.-1] for the farmers check. Amadeus 77 was very similar to 'Rojo de Seda' in cooking quality tests for cooking time, broth taste, color and thickness, and whole grain softness. Under high temperatures and BGYMV incidence in Santa Cruz Porrillo, El Salvador, in 2002, Amadeus 77 yielded 1110 kg [ha.sup.-1] compared with 984 kg [ha.sup.-1] for Tio Canela 75 and 49 kg [ha.sup.-1] for Rojo de Seda. Amadeus yielded 1021 kg [ha.sup.-1] compared with 837 kg [ha.sup.-1] for the checks across 49 locations in Nicaragua in 2000. In 22 yield trials in Costa Rica conducted from 1999 to 2002, Amadeus 77 produced 1055 kg [ha.sup.-1] compared with 928 kg [ha.sup.-1] for 'Bribri' (Rosas et al., 2003) and 770 kg [ha.sup.-1] for the farmers check. Moreover, across seven locations in 2003, Amadeus 77 averaged 1033 kg [ha.sup.-1] compared with 1024 kg [ha.sup.-1] for Bribri and 650 kg [ha.sup.-1] for the farmers check.

Amadeus 77 has an indeterminate upright bush, Type II growth habit with short vine. Amadeus 77 flowers in 36 to 38 d and matures in 66 to 68 d. Stem color is green with red pigmentation. Green pods turn yellow with red pigmentation at physiological maturity. Amadeus 77 has long pods containing seven to eight seeds per pod. Amadeus 77 has an ovoid elongated seed, averaging 25 g 100 [seed.sup.-1]. Seed coat color is shiny red.

Small quantities of Breeder seed of Amadeus 77 may be obtained from the corresponding author. Plant variety protection will not be sought for this cultivar.

Acknowledgments

The research was supported in part by the Grant no. GDG-G-00-02-00012-00 from the USAID Bean/Cowpea CRSP Program.

References

Rosas, J.C., O.I. Varela, and J.S. Beaver. 1997. Registration of 'Tio Canela 75' small red bean (race Mesoamerica). Crop Sci. 37:1391.

Rosas, J.C., and D. Escoto. 2003. Amadeus 77. Escuela Agricola Panamericana, Zamorano y Direccion de Ciencia y Tecnologia Agropecuaria (DICTA), Secretaria de Agricultura y Ganaderia. Tech. Bull., Litocom Press, Tegucigalpa, Honduras.

Rosas, J.C., J.C. Hernandez, and R. Araya. 2003. Registration of 'Bribri' small red bean (race Mesoamerica). Crop Sci. 43:430-431.

J.C. ROSAS, * J.S. BEAVER, D. ESCOTO, C.A. PEREZ, A. LLANO, J.C. HERNANDEZ, AND R. ARAYA

J.C. Rosas, Escuela Agricola Panamericana, Zamorano, P.O. Box 93, Tegucigalpa, Honduras; J.S. Beaver, Agronomy and Soil Dep., Univ. of Puerto Rico, Mayaguez, Puerto Rico 00681; D. Escoto, DICTA, Secretaria de Agricultura y Ganaderia, Danli, Honduras; C.A. Perez, Programa de Granos Basicos, CENTA, Km 33 1/2 Carretera a Santa Ana, Apartado 885, San Salvador, El Salvador: A. Llano, Programa de Frijol, INTA, Km 14, Carretera Notre, Hacienda San Cristobal, Managua, Nicaragua; J.C. Hernandez, Instituto Nacional de Innovacion y Transferencia de Tecnologia Agropecuaria, San Jose, Costa Rica; R. Araya, Univ. de Costa Rica, San Jos6, Costa Rica. Registration by CSSA. Accepted 29 Feb. 2004. * Corresponding author (jcrosas@zamorano.edu).
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Title Annotation:Registrations Of Cultivars
Author:Rosas, J.C.; Beaver, J.S.; Escoto, D.; Perez, C.A.; Llano, A.; Hernandez, J.C.; Araya, R.
Publication:Crop Science
Geographic Code:2HOND
Date:Sep 1, 2004
Words:1080
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