Working Document Series Open Access Diversity of Pathogens and Symptoms Associated with Dieback on Passion Fruit in Kenya R.K. Gathu · J. Mbaka · R. Muasya · M. Mwangi +1 more Passion fruit is very important in Kenya as a source of nutrition and income. Currently, local demand for the fruit highly exceeds its supply. Diseases and pests are the most important constraints to passion fruit production. Among diseas… RUF-32057 2012 CC BY 4.0 13 May 2014
Working Document Series Open Access Advances in Cassava Research in Management of Cassava Brown Streak Virus Disease in Uganda Settumba Mukasa Cassava is an important food crop in Africa where it is affected by two main virus diseases, cassava mosaic disease (CMD) and cassava brown streak disease (CBSD). CMD occurs in all the cassava-growing countries on the continent and it has … RUF-32003 2012 CC BY 4.0 13 May 2014
Theses & Dissertations Open Access Soybean Rust Diversity and Adaptation of Elite Soybean Lines to the Ugandan Environment Tonny Obua Soybean rust (Phakopsora pachyrhizi Sydow) is a major threat to soybean production worldwide. The objectives of this study were to; a) assess P. pachyrhizi diversity in the major soybean growing areas of Uganda usin SSR markers; b) assess … RUF-31686 2013 CC BY 4.0 26 Feb 2014
Working Document Series Open Access Overview of Impact Indicators of Soybean Rust Resistant Varieties on Uganda's Economy B. Bashaasha · R. Kawuki · D. Nanfumba · T. Obua +1 more Herein, we document the contribution of soybean (Glycine max) genetic improvement to the economic changes at the community level in Uganda. We have illustrated the case of soybean rust, which has been, and continues to be the greatest obst… RUF-31636 2012 CC BY 4.0 13 Nov 2013
Journal articles Open Access Identification of Near-Isogenic Lines Resistance to Rice Yellow Mottle Virtus R. Akromah · A. Jaw · M.N. Ndjionndjop · Y. Séré Rice yellow mottle virus (RYMV) is a serious disease in rice production in the lowland and irrigated ecologies. A study was conducted to examine the resistance of rice (Oryza sp.) lines RYMV. One hundred near-isogenic lines (NILs) from BC2… RUF-31588 2012 CC BY 4.0 10 Oct 2013
Working Document Series Open Access Identification of QTL’s Linked for Resistance to Maize Cob Rot Caused by Fusarium graminearum in Tropical Maize G. Asea · P. Gibson · P. Okori · L. Tembo Maize cob rots caused by Fusarium graminearum cause yield losses and quality as a result of produced mycotoxins. Developing varieties resistant to cob rots is an alternative strategy that is practical and provides better insurance for the … RUF-31579 2012 CC BY 4.0 9 Oct 2013
Working Document Series Open Access In-Vitro Determination of Kernel Resistance to Aspergillus flavus and Aflatoxin Accumulation in Groundnut B.R. Ntare · A. Ozimati · P.R. Rubaihayo The study determined the level of resistance to Aspergillus flavus and to accumulation of aflatoxins in potential new breeding sources from ICRISAT Mali and in locally adapted groundnut genotypes commonly grown by Ugandan farmers. Genotype… RUF-31577 2012 CC BY 4.0 9 Oct 2013
Working Document Series Open Access Phenotypic Diversity of Ugandan Pigeonpea landraces and their Reaction to Fusarium wilt in Uganda R. Edema · C.M. Mukankusi · F. Okot This study characterised 68 pigeonpea accessions in terms of morphological traits and resistance to Fusarium wilt. Two broad phenotypic clusters were identified, and 16 appeared to possess some resistance to Fusarium wilt. RUF-31571 2012 CC BY 4.0 8 Oct 2013
Working Document Series Open Access Field Screening of Bread Wheat for Partial Sources of Resistance to Stem Rust S. Bhavani · P. Njau · F.M. Nzuve · G. Tusiime The stem rust Puccinia graminis tritici race ug99 (TTKSK) and its variants results into wheat grain losses ranging from 70- 100%. This study was set up at the Kenya Agricultural Research Institute (KARI), Njoro to identify sources of parti… RUF-31552 2012 CC BY 4.0 8 Oct 2013
Working Document Series Open Access Effectiveness of Macropropagation Technology in Production of Disease Free Banana Seedlings in Central and Eastern Kenya J. Mbaka · R. Muasya · M. Mwangi · Njau Njeri Banana (Musa spp.) is one of the most important food crops that contribute to the food security of the majority small holders in Kenya. However, due to diseases, banana production has not reached its full potential. Fusarium wilt caused by… RUF-31548 2012 CC BY 4.0 7 Oct 2013
Working Document Series Open Access Stability of Barley Genotypes for Earliness, Resistance to Leaf Scald Disease and Yield in Ethiopia R. Edema · A. Fetien · G. Lijalem Due to the unpredictable rainfall pattern and shorter growing seasons experienced in recent years in Ethiopia, early-maturing barley (Hordeum vulgare) genotypes are preferred by farmers in order to escape moisture stress and to bridge the … RUF-31533 2012 CC BY 4.0 6 Oct 2013
Working Document Series Open Access Assessing the Effectiveness of Pyramided Genes in Conferring Broad Resistance to Bean Anthracnose M. Kiryowa · C.M. Mukankusi · S.T. Nkalubo · H. Talwana +1 more Colletotrichum lindemuthianum is one of the most important constraints to common bean production in Uganda. The fungus is highly variable that single gene resistance alone is not adequate to offer effective and durable resistance among var… RUF-31530 2012 CC BY 4.0 6 Oct 2013
Working Document Series Open Access Genetics of Resistance to Groundnut Rosette Virus Disease among Groundnut Landraces in Uganda R. Edema · P. Gibson · S.I. Kayondo · B.R. Ntare +1 more Groundnut rosette virus disease (GRVD) is caused by a trio of viral components and is a major disease that can cause 100% crop losses in an epidemic situation. Thus, continued effort to develop resistant groundnut cultivars is critical in … RUF-31526 2012 CC BY 4.0 6 Oct 2013
Working Document Series Open Access Marker Assisted Introgression of Phytophthora capsici Resistance Genes into Locally Adapted Pepper Variety cv. Scotch Bonnet E. Awori · S.T. Nkalubo · G. Tusiime Phytophthora capsici, a soil born fungus, is one of the most important constraint to hot pepper production in Uganda, causing root rot and wilt disease. Current management approaches that are mainly cultural and chemical do not provide ade… RUF-31504 2012 CC BY 4.0 5 Oct 2013
Journal articles Open Access Hot Pepper Reaction to Field Diseases V. Nsabiyera · M. Ochwo-Ssemakula · P. Sseruwagi Diseases are major constraints to hot pepper (Capsicum annum L.) production in sub-Saharan Africa. The search for cultivars resistant to the major diseases of hot pepper has been limited. This study was conducted in Uganda to evaluate exot… RUF-31444 2012 CC BY 4.0 29 Sep 2013
Working Document Series Open Access Reaction of Rice Cultivars to a Virulent Rice Yellow Mottle Virus Strain in Uganda R. Edema · P. Gibson · J. Lamo · M.L. Mogga Rice (Oryza spp.) has long been an important food staple for many traditional rice growing communities. Key developments in efforts to improve rice production such as the development of NERICA varieties have been widely recognised. Nonethe… RUF-31434 2012 CC BY 4.0 28 Sep 2013
Journal articles Open Access Evaluation of Tomato Genotypes for Resistance to Root-knot Nematodes R. Akromah · F. Jaiteh · C. Kwoseh Tomato (Solanum lycopersicum) is one of the most popular vegetable crops worldwide, owing to its high nutritive value and diversified use. Tomato production in Ghana is threatened by plant parasitic nematodes, especially the root knot nema… RUF-31432 2012 CC BY 4.0 28 Sep 2013
Journal articles Open Access Evaluating Genetic Association between Fusarium and Pythium Root Rots Resistances in the Bean Genotype RWR 719 P.O. Ongom Resistance to Fusarium root rot (Fusarium solani f.s.p phaseoli) has been reported in common bean (Phaseolus vulgaris L.) sources and is usually associated with Pythium root rot resistance. Pythium root rot (Pythium ultimum var ultimum) re… RUF-31427 2012 CC BY 4.0 28 Sep 2013
Journal articles Open Access Improvement of Resistance to Fusarium Root Rot through Gene Pyramiding in Common Bean R. Edema · P. Gibson · C.M. Mukankusi · J. Obala +1 more Fusarium root rot (FRR), caused by Fusarium solani f.sp. phaseoli, is one of the most serious root rot diseases of common bean (Phaseolus vulgaris L.) throughout the world. Yield losses of up to 84% have been attributed to the disease. Dev… RUF-31417 2012 CC BY 4.0 27 Sep 2013
Working Document Series Open Access Genetic Analysis of Resistance to Rice Bacterial Blight in Uganda P. Gibson · J. Lamo · R.O. Onasanya · Y. Séré Rice bacterial blight (Xanthomonas oryzae pv.oryzae) is a major constraint to rice (Oryza sativa L.) production in Uganda and as part of strategies to develop resistant cultivars, it is important to evaluate resistance of commonly used cul… RUF-31413 2012 CC BY 4.0 24 Sep 2013
Journal articles Open Access Inheritance of Resistance to Turcicum Leaf Blight in Sorghum A.M. Ali · M.M. Beshir · P. Okori Sorghum (Sorghum bicolor) has global socio-economic importance and is as model plant species for many tropical grasses with complex genomes. It is frequently devastated by Turcicum leaf blight, caused by Exserohilum turcicum, leading to co… RUF-31396 2012 CC BY 4.0 16 Sep 2013
Theses & Dissertations Open Access Development of Molecular Markers for Introgression of Resistance to Turcicum Leaf Blight in Sorghum Mayada Mamoun Beshir Sorghum {Sorghum bicolour (L.) Moench (2n=2x=20)}, a C4 grass that diverged from maize about 15 million years ago, is the fifth major cereal crop in the world after wheat, rice, maize and barley. It has relatively small genome of 750 milli… RUF-31342 2011 CC BY 4.0 13 Sep 2013
Journal articles Open Access Evaluation of Striga-Resistant Early Maize Hybrids and Test Locations under Striga-infested and Striga-Free Environments R.O. Akinwale · B. Badu-Apraku · M.A.B. Fakorede Emergence of several seed companies in the West Africa sub-region during the last decade has necessitated intensified efforts towards hybrid development and extensive testing. The objectives of the present study were to evaluate selected S… RUF-31252 2013 CC BY 4.0 21 Jun 2013
