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ARS Home » Southeast Area » Mayaguez, Puerto Rico » Tropical Crops and Germplasm Research » Research » Publications at this Location » Publication #326690
Title: Common bean and cowpea improvement in Angola

Author
item DAVID, A.N. - Agricultural Research Institute (IIA)
item DOVALA, A.C. - Agricultural Research Institute (IIA)
item MARTINS, M.M. - Agricultural Research Institute (IIA)
item BEAVER, JAMES - University Of Puerto Rico
item Porch, Timothy - Tim

Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 1/11/2016
Publication Date: N/A
Citation: N/A

Interpretive Summary: During 2014 and 2015, the Instituto de Investigação Agronómica (IIA) evaluated the performance of common bean breeding lines and improved cowpea varieties. The field experiments were planted in the lowlands at Mazozo and in the highlands at Chianga. These breeding lines and cultivars have combinations of genes for resistance to pests and diseases and tolerance to drought, low soil N and high temperature. The main objective of this study was to select the best breeding lines in terms of adaptability, seed type, maturity, resistance to angular leaf spot and rust, and seed yield. PR0401-259 performed well at both Mazozo (792 kg/ha) and Chianga (925 kg/ha), while the national average yield is 500 kg/ha. PR0637-116 produced a mean seed yield of 833 kg/ha at Mazozo. W6-16489, Kasukanywele, Kigoma, Uyole 96, Sacramento performed well at both sites. The common bean cultivar Kilombero produced the highest seed yield at Chianga (1,767 kg/ha) and W6-16429 yielded 1,521 kg/ha at Mazozo. Beniquez and W6-16489 were resistant to angular leaf spot. Several improved and local cowpea varieties were well adapted at Mazozo and Chianga. The cowpea cultivars 124/2469-1, 124/1375-3, 124/2783-4, IT82E-18 produced seed yields > 1,000 kg/ha which is four times the national average of 250 kg/ha. The cowpea variety 124/2469-1 produced the highest seed yield (1,498 kg/ha). The most promising bean and cowpea lines will be considered for local release and will be used as parents in a breeding program to develop improved varieties for Angola.

Technical Abstract: During 2014 and 2015, the Instituto de Investigação Agronómica (IIA) evaluated the performance of common bean (Phaselolus vulgaris L.) breeding lines and improved cowpea (Vigna unguiculata L. Walp.) varieties. The field experiments were planted in the lowlands at Mazozo and in the highlands at Chianga. These breeding lines and cultivars have combinations of genes for resistance to pests and diseases and tolerance to drought, low soil N and high temperature. The main objective of this study was to select the best breeding lines in terms of adaptability, seed type, maturity, resistance to angular leaf spot and rust, and seed yield. PR0401-259 performed well at both Mazozo (792 kg/ha) and Chianga (925 kg/ha), while the national average yield is 500 kg/ha. PR0637-116 produced a mean seed yield of 833 kg/ha at Mazozo. W6-16489, Kasukanywele, Kigoma, Uyole 96, Sacramento performed well at both sites. The common bean cultivar Kilombero produced the highest seed yield at Chianga (1,767 kg/ha) and W6-16429 yielded 1,521 kg/ha at Mazozo. Beniquez and W6-16489 were resistant to angular leaf spot. Several improved and local cowpea varieties were well adapted at Mazozo and Chianga. The cowpea cultivars 124/2469-1, 124/1375-3, 124/2783-4, IT82E-18 produced seed yields > 1,000 kg/ha which is four times the national average of 250 kg/ha. The cowpea variety 124/2469-1 produced the highest seed yield (1,498 kg/ha). The most promising bean and cowpea lines will be considered for local release and will be used as parents in a breeding program to develop improved varieties for Angola.