Working Document Series Open Access Determination of genetic structure of germplasm collections: Are traditional hierarchical clustering methods appropriate for genetic marker data? J. Jansen · T.L. Odong · F.A. van Eeuwijk · J. van Heerwaarden +1 more We studied the performance of traditional hierarchical clustering techniques using molecular marker data. In this study, we showed that the cophenetic correlation coefficient is directly related to subgroup differentiation and can thus be … RUF-35236 2010 CC BY 4.0 17 Sep 2015
Working Document Series Open Access Development of plant nutrient efficient use sorghum varieties to support livelihood strategies of East African farmers S. Gudu · P. Okori Seventy five percent of the over 100 million people in Eastern and Central Africa region live in marginal areas and are dependent on agriculture. Agricultural productivity in those areas is mainly low resource based and suffer especially f… RUF-35233 2010 CC BY 4.0 17 Sep 2015
Working Document Series Open Access S1 and S2 selection of Longe 4 maize variety for tolerance to low soil nitrogen in Uganda G. Asea · R. Edema · P. Gibson · P. Namugga Low nitrogen is a major environmental stress leading to low yields in maize. Identification of varieties able to perform well under low soil N is of great significance to the resource poor farmers in the country especially when input costs… RUF-35227 2010 CC BY 4.0 17 Sep 2015
Working Document Series Open Access Genetic diversity in maize landraces for resistance to Chilo partellus in Kenya P. Gibson · S.N. Mugo · S.W. Munyiri · J.K. Mwololo +2 more Yield losses in maize associated with stem borer damage is estimated at 13% annually in Kenya. New sources of resistance to stem borers are needed to develop germplasm for the diverse maize growing ecologies. This study was conducted to es… RUF-35223 2010 CC BY 4.0 17 Sep 2015
Working Document Series Open Access Morphological and genetic characterization of mango varieties in Mozambique A.V Biljon · L. Herselman · C.R.B. Mussane Mangoes are economically important for Mozambique because of adequate climatic conditions and international market opportunities. This study compare morphological and AFLP characterisation of 30 mango varieties from the Umbeluzi research s… RUF-35222 2010 CC BY 4.0 17 Sep 2015
Working Document Series Open Access Innovative breeding for drought tolerance and fertilizer use efficiency in maize S.C. Muchena This paper highlights outcome of research that was initiated as part of a graduate PhD research thesis, but has today led to development of commercial maize varieties in Southern Africa. It clearly demonstrates that university-based resear… RUF-35218 2010 CC BY 4.0 17 Sep 2015
Working Document Series Open Access Genetic variability of soybean for yield and yield components under irrigation conditions of Gezira, Sudan Yousif Balla. Mohamed · I. Seifeldin Elrayah A field experiment was conducted to study the genetic variability among 21 soybean verities at the Gezira Research Station Farm, Sudan for two successive seasons in 2009 and 2010. Six traits were studied including grain yield/ha, days to 5… RUF-35217 2010 CC BY 4.0 17 Sep 2015
Working Document Series Open Access Food security and plant biotechnology applications in Africa A. Kasem Zaki Africa is, paradoxically, a continent rich in resources, and yet, lacking and lagging in overall development. African Agriculture in facing great challenges. Accordingly, African countries have developed policies aimed at transforming agri… RUF-35210 2010 CC BY 4.0 17 Sep 2015
Working Document Series Open Access Variation in micronutrient content of orange-fleshed sweetpotato varieties grown in different environments M.S. Mwala · G.I. Serenje Field experiments were conducted at three locations in Zambia to characterize 15 sweetpotato varieties for tuber yield and micro-nutrient content. Location and variety had significant effect on tuber yield. Marketable yield ranged from 5.2… RUF-35139 2010 CC BY 4.0 16 Sep 2015
Working Document Series Open Access Soil micronutrient supply and grain quality for human nutrition in selected parts of Morogoro, Tanzania M.L.E. Imakumbili · J.M.R. Semoka · E Semu Soils worldwide have become depleted of micronutrients. This has resulted in an increase in micronutrient deficiency diseases for people consuming micronutrient poor foods as a sole source of nutrition. This study was carried out to determ… RUF-35135 2010 CC BY 4.0 16 Sep 2015
Working Document Series Open Access Strategic repositioning of African indigenous vegetables in the Horticulture Sector M.O. Abukutsa-Onyango African indigenous vegetables that formed an integral part of African diets lost popularity with introduction of exotic crops including vegetables. With over half the populace living below the poverty line, there is need for paradigm shift… RUF-35134 2010 CC BY 4.0 16 Sep 2015
Working Document Series Open Access Differential gene expression in nematode-susceptible and -tolerant East African highland bananas following inoculation with non-pathogenic Fusarium oxysporum endophytes D. Coyne · T. Dubois · P. Paparu · A. Viljoen Endophytic non-pathogenic Fusarium oxysporum isolates have been shown to reduce Radopholus similis populations through induced resistance. We used cDNA-AFLPs to identify genes induced in banana plants susceptible (cv Nabusa, AAA-EA) and to… RUF-35131 2010 CC BY 4.0 16 Sep 2015
Working Document Series Open Access Development, promotion and dissemination of improved Fusarium wilt resistant pigeon pea lines in drought prone areas of Uganda T. Areke · R. Edema · C. Mukankusi · N. S. Said Pigeon Pea (Cajanus cajan) remains a relatively untapped food legume crop in Uganda and in many parts of Africa mainly due to lack of promotion and availability of varieties that meet producer and consumers needs. The crop is a rich source… RUF-35110 2010 CC BY 4.0 16 Sep 2015
Working Document Series Open Access Production of disease-free papaya planting materials of known sex for commercial fruit production A.W. Kihurani · M. Mwaniki · M.M. Waiganjo · F.K.R. Wanzala Papaya (Carica papaya L.) is a medium sized fruit crop with a potential to produce fruits throughout the year. The ripe fruits, which are very rich in vitamins A and C, are popularly used for dessert or processed into jam or wine. Due to i… RUF-34756 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Evaluation of Chilli pepper genotypes for yield and reaction to field diseases V. Nsabiyera · M. Ochwo-Ssemakula · P. Sseruwagi The performance of 25 chilli (16 exotic and 9 local) genotypes for yield and associated traits and reaction to field diseases was assessed at the National Crops Resources Research Institute (NaCRRI)- Namulonge from June-November, 2009. Tot… RUF-34753 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Preferred banana varieties and their seed systems in Eastern and Central provinces of Kenya N. Gitonga · M.R. Kasyoka · N. Kori · J. Mbaka +2 more Banana is an important crop for food security in Kenya. Its production has been hindered by scarcity of seedlings and pests, among other factors. A recent survey in eastern and central Kenya showed that desert varieties are prefered due to… RUF-34724 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Identification of drought related and drought responsive genes in cassava Harvey. Jagger · E.B. Kizito · Ferguson. Morag · L. Turyagyenda Conventional cassava breeding has yielded a lot of progress for many traits including pest and disease resistance and high yields but little progress has been made with respect to drought tolerance. It is believed that molecular breeding o… RUF-34689 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Characterisation of genetic diversity among Sudanese sorghum accessions using molecular markers and phenotypic characteristics M. A. Abdelbagi · Suliman. Sufian Sorghum is an important staple food grain crop for the millions of people living in the semi-arid tropics in Asia, Africa and Latin America. The present study examined phenotypic and genotypic characteristics of 95 Sudanese sorghum accessi… RUF-34687 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Evaluation of physiological and morphological traits conferring drought tolerance in cowpea D. Lungu · K. Simango A field study was carried at Gwebi VTC to determine relationships among the morpho-physiological traits associated with drought tolerance in cowpea. Fifteen genotypes were planted in RCBD with three replications under two moisture environm… RUF-34685 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Enhancing Callus induction and embrogenic cell suspension development in East African highland banana G. Arinaitwe · P. Gibson · A. Kiggundu · S.B. Mukasa +3 more Improvement of banana using conventional breeding methods is very difficult due to its biology. Genetic transformation is a novel alternative approach for crop improvement. Transformation of EA-AAA bananas has, however, been limited by dif… RUF-34682 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Inheritance of resistance to Fusarium root rot in three common bean genotypes P. Gibson · S.T. Nkalubo · P.O. Ongom · P. Rubaihayo Fusarium solani f. sp phaseoli (FSP) is an important disease in Uganda causing in some cases 100% yield losses in beans. The study established the nature of inheritance to FSP resistance in genotypes RWR 719, NABE 14 and NABE 13. A 5x5 ful… RUF-34670 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Analysis of drought tolerance in selected upland rice genotypes in Uganda Y. Baguma · J. Lamo · B.S. Namazzi · P. Okori Breeding for drought tolerance requires a clear understanding of the mode of gene action for this trait. To understand the action of drought tolerance genes in upland rice varieties in Uganda, a study was carried out to establish the gener… RUF-34652 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access The effect of super phosphate and planting density on mini-tuber production from true potato seed T. A. Mtaita · M. Mutetwa · M. D. Shoko Improving tuber seed quality and availability is institutionally complex in the tropics and sub-tropics. The main objective of this work was to evaluate the effect of superphosphate and plant density on mini-tuber production from true pota… RUF-34649 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Adaptability of rice cultivars to different ecologies in western province of Zambia D.M Lungu · C. Mutale · F. P Muuka Rice in Zambia has traditionally been grown in lowland flooded or semi-flooded environments. These environments are unfortunately only a small portion of Zambia, occupying only 1% of the total land. The increase in food demand in the count… RUF-34643 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Evaluating the macropropagation efficiency of banana varieties preferred by farmers in Eastern and Central Kenya N. Gitonga · M.R. Kasyoka · N. Kori · R. Muasya +1 more Kenyan farmers are threatened by overreliance on few crops whose yields are reduced by adverse climatic changes. Bananas are more resilient and produce year round, making it a more suitable crop. To increase banana production, farmers shou… RUF-34627 2010 CC BY 4.0 8 Sep 2015
