This chapter contains five main sections. The first, 'New Variety Development Strategy', discusses the creation of a de novo demand-led new variety development strategy as a strategic communications document. The second, 'Development Stage Plan', aims to present a clear understanding of the key...

This chapter focuses on the breeding of new sweet cherry cultivars. Information on the origin, parentage, tree growth, productivity, phenology, fruit characteristics and resistance to various biotic and abiotic factors of these sweet cherry cultivars are also presented.

This chapter focuses on the importance of plant breeding in the development of new sour cherry cultivars. Information on the origin, parentage, tree growth, fertility/fruit set, flowering date, fruit characteristics, resistance to various biotic and abiotic factors and uses of these new sour cherry ...

This book contains 21 chapters presenting the most comprehensive, accurate and informative view of the spread of improved crop cultivars in Africa south of Sahara. The importance of the diffusion and adoption of different crop cultivars and the impacts of the use of these improved cultivars are...

This chapter focuses on the potential contributions of modern cultivar change to agricultural development in Africa south of Sahara. The direct positive consequences of the use of improved cultivars for food security are discussed and the role of modern cultivar change in setting the stage for the...

This chapter focuses on the importance of beans (Phaseolus vulgaris) in area and production in Burundi, Congo Democratic Republic, Ethiopia, Kenya, Malawi, Mozambique, Rwanda, Tanzania, Uganda and Zambia. Data on bean cultivar output and adoption in these countries is also presented.

This chapter focuses on the importance of potato production in Burundi, Congo Democratic Republic, Ethiopia, Kenya, Madagascar, Rwanda, Sudan, Tanzania and Uganda and sweet potato production in Burundi, Mozambique, Rwanda, Tanzania and Uganda. The importance of the dissemination of improved potato...

This chapter focuses on the cultivar adoption, scientific capacity in national agricultural research systems (NARS) and on cultivar releases in Africa south of the Sahara. The assessment of the performance in rice improvement from the perspective of inputs (strength of NARS), outputs (cultivar...

Sweetpotato (Ipomoea batatas L.) plays a significant role in food and nutritional security in Kenya. However, production is constrained by: (i) Sweet potato virus diseases (SPVD) and weevils (Cylas spp.); (ii) shortage of clean planting materials; (iii) lack of suitable varieties for high altitude...

In sub-Saharan Africa (SSA), a range of farmer-based practices for the conservation and multiplication of sweetpotato planting material has evolved. In bimodal rainfall areas, sequential planting ensures that a ware crop is in the ground for most of the year, and vines are harvested from one crop...