Grain Yield and Protein Content of Brazilian Cowpea Genotypes under Diverse Ugandan Environments

Abstract

Twenty nine cowpea genotypes, including four Ugandan genotypes, were evaluated for grain yield, protein stability and adaptability under diverse environments in a randomized complete block design with three replications. The analysis showed that cowpea grain yield and protein content were significantly (P < 0.01) affected by genotypes (G), environments (E), and interaction (G x E). Genotypes C2T and C2I had the highest grain yield and protein content respectively, but both were only adapted to specific environments. Genotypes C1J, C1V, C2A, C2O, and C2R were adapted to three environments with high yield which was stable. Similarly, genotypes BRS Pujante, C1J, C2Q and CIT also expressed high protein levels with high stability and wide adaptability. The study further revealed that Namulonge 2014B, Serere 2014A, Serere 2014B and Serere were the most favorable environments for obtaining high yield and protein respectively, because at these four environments, mean yield and protein were higher than the overall mean. All Brazilian genotypes had high protein levels compared to Ugandan genotypes indicating the potential of Brazilian genotypes in improving cowpea seed protein content in Uganda.

Evaluation of Total Seed Protein Content in Eleven Arkansas Cowpea (&lt;i&gt;Vigna unguiculata&lt;/i&gt; (L.) Walp.) Lines

“…The results from the research performed by Bliss et al [25] also indicated a significant genotype by location interaction effect on protein content in cowpea. In addition, Ddamulira and Santos [26] found that protein content in cowpea was significantly affected by the interaction between genotype and environment. Our date support their conclusion, genotype and environment have their contribution to seed protein content in cowpea.…”

Screening for resistance to Striga gesnerioides and estimation of yield loss among Cowpea (Vigna unguiculata (L.) Walp.) progenies in the Upper East Region of Ghana

“…The dry grain protein concentration oscillates from 21 to 33% (Abudulai et al, 2016). It is well adapted to hectic environments where several crops fail to grow well (Bisikwa et al, 2014;Ddamulira et al, 2015). According to FAO, cowpea was cultivated on about 12.08 million hectare in Africa in 2016 with a total production of 5.83 million hectare in West Africa, predominantly in Nigeria, Niger, Burkina Faso, Mali and Senegal (FAOSTAT, 2018).…”

Cowpea nutrient responses for Malawi and Tanzania

“…The leaves and grain are important foods with protein contents of 27-43% in leaves and 21-33% in grain (Ddamulira et al, 2015;Abudulai et al, 2016). It is also used as a livestock fodder in West Africa and can account for more than 40% of the value of the crop in the Sahel (Kamara et al, 2012;Maman et al, 2017).…”

“…It is also used as a livestock fodder in West Africa and can account for more than 40% of the value of the crop in the Sahel (Kamara et al, 2012;Maman et al, 2017). Cowpea can have high levels of biological N fixation and is relatively tolerant of soil water deficits with wide adaptation (Bisikwa et al, 2014;Ddamulira et al, 2015).…”