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Vegetatively propagated crop (VPC) seed tends to remain true to varietal type but is bulky, often carries disease, and is slow to produce. So VPC seed needs to be handled differently than that of other crops, e.g., it tends to be sourced locally, often must be fresh, and it is less often sold on ...


Bentley, J.W.Andrade-Piedra, J.L.Demo, P.Dzomeku, B.M.Jacobsen, K.Kikulwe, E.Kromann, P.Kumar, L.McEwan, M.Mudege, Netsayi N.Ogero, K.Okechugwu, R.Orrego, R.Ospina, B.Sperling, L.Walsh, S.Thiele, Graham[Understanding root, tuber, and banana seed systems and coordination breakdown: A multi-stakeholder framework.]Understanding root, tuber, and banana seed systems and coordination breakdown: A multi-stakeholder framework.
Hauser, S.Gichuru, M.[Root distribution of Dactyladenia (Acioa) barteri and Senna (Cassia) siamea in alley cropping on Ultisol. II. Impact on water regime and consequences for experimental design]Root distribution of Dactyladenia (Acioa) barteri and Senna (Cassia) siamea in alley cropping on Ultisol. II. Impact on water regime and consequences for experimental design

Despite the advantages of root crops as important staple food crops in the tropics, research and development of such crops has been neglected. There is, therefore, the need for production, processing and utilization techniques to be developed, evaluated and made available to farmers. However, bec...


Hahn, S.Isoba, J.Ikotun, T.[Resistance breeding in root and tuber crops at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria]Resistance breeding in root and tuber crops at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria

The widely recognized role of roots, tubers and bananas (RT&Bs) in achieving food security and providing income opportunities in the world’s poorest regions will be challenged by socioeconomic and climate related drivers. These will affect demand and production patterns and increase pressure on f...


Petsakos, A.Prager, S.D.González, Carlos EduardoGbegbelegbe, S.Kikulwe, E.Hareau, G.Chibwana, A.Sulser, T.B.[Understanding the consequences of changes in the production frontiers for roots, tubers and bananas.]Understanding the consequences of changes in the production frontiers for roots, tubers and bananas.

Controlled pollination in root and tuber crops is challenging. Complex ploidy, cross-incompatibility, erratic flowering patterns, outcrossing, etc., limit the efficiency of breeding progress in these crops. Half-sib breeding that involves random pollination among parents is a viable method to har...


Norman, P.E.Asfaw, A.Tongoona, P.B.Danquah, A.Danquah, E.Y.Koeyer, D. deAsiedu, Robert[Can parentage analysis facilitate breeding activities in root and tuber crops?]Can parentage analysis facilitate breeding activities in root and tuber crops?

Response of cassava (Manihot esculenta Crantz) to fertigation as a form of nutrient delivery is unknown. The objectives of this study were to establish a balanced nutrition and to enhance agronomic nutrient use efficiency (ANUE) of cassava under fertigation. This study was conducted in the greenh...


Omondi, J.O.Lazarovitch, N.Rachmilevitch, S.Boahen, S.Ntawuruhunga, PheneasSokolowski, E.Yermiyahu, U.[Nutrient use efficiency and harvest index of cassava decline as fertigation solution concentration increases]Nutrient use efficiency and harvest index of cassava decline as fertigation solution concentration increases
Ezumah, H.C.Lawson, T.L.Federer, W.T.Awa, N.E.[Importance and sustainability of root cropsbased systems in subSaharan Africa]Importance and sustainability of root cropsbased systems in subSaharan Africa

Lowered temperatures may reduce the root water uptake of tropical trees at high elevations through several mechanisms; however, field studies to test their relevance are lacking. We measured sap flux density (J) in small-diameter tree roots across a 2000-m elevation transect in a tropical mountai...


Graefe, S.Leuschner, CConers, HHertel, D[Root functioning in tropical high-elevation forests: environmental vs biological control of root water absorption]Root functioning in tropical high-elevation forests: environmental vs biological control of root water absorption

The study described a T-DNA vectorwith a Cassava veinmosaic virus promoter cassette (pCsVMV) and a kanamycin selectable marker gene driven by the 35S Cauliflower mosaic virus promoter with a view to stably express transgenes over repeated cycles of clonal propagation. A ?-glucuronidase reporter g...


Oyelakin, O.O.Opabode, J.T.Raji, A.A.Ingelbrecht, I.L.[A Cassava vein mosaic virus promoter cassette induces high and stable gene expression in clonally propagated transgenic cassava (Manihot esculenta Crantz)]A Cassava vein mosaic virus promoter cassette induces high and stable gene expression in clonally propagated transgenic cassava (Manihot esculenta Crantz)

The storage roots of cassava (Manihot esculenta Crantz) suffer from a rapid post-harvest deterioration that is a major constraint to their increased exploitation. In many ways this deterioration resembles wound responses in other better studied plant systems, though it appears to lack an adequate...


Han, YGómez Vásquez, RReilly, KLi, HTohme, Joseph M.Cooper, R.M.Beeching, JR[Hydroxyproline-rich glycoproteins expressed during stress response in cassava]Hydroxyproline-rich glycoproteins expressed during stress response in cassava

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