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Actual accomplishments and future plans of the CIAT Bean Program during the period 1986-90 are described. The major cropping systems studied include bush beans in monoculture; bush, semiclimbing, and climbing beans in relay systems with maize; bush beans in association with maize; and climbing be...

Se describen los progresos alcanzados hasta el momento y planes futuros del Programa de Frijol del CIAT en el periodo 1986-90. Los principales sistemas de cultivo de frijol estudiados incluyen frijol arbustivo en monocultivo; frijol arbustivo, semitrepador y trepador en relevo con maiz; frijol ar...


International Center for Tropical Agriculture[Research strategies and projections: 1986-1990. Commodity programs: Bean program]Research strategies and projections: 1986-1990. Commodity programs: Bean program

Participatory plant breeding (PPB) is one of the on-farm conservation strategies designed to maintain or enhance the level of landrace genetic diversity deployed on-farm. The global in situ project .aims to strengthen the skiIls and knowledge of local communities in locating and understanding the...


Sthapit, B.R.Joshi, Krishna D.Rana, Ram B.Upadhaya, MadhusudanEyzaguirre, Pablo B.Jarvis, Devra I.[Enhancing biodiversity and production through participatory plant breeding: Setting breeding goals]Enhancing biodiversity and production through participatory plant breeding: Setting breeding goals

In the so-called difficult environments, institutional plant breeding appears to be a failure, mainly because breeding is directed at increasing yields in more favorable environments. Although the improved varieties have broad adaptability, under varied marginal envi...


Ramprasad, VanajaShibu, M.P.[Empowering farmers through participatory plant breeding: An initiative of the green foundation]Empowering farmers through participatory plant breeding: An initiative of the green foundation

In recent years the National Root and Tuber Crops Program of Vietnam, with the cooperation and assistance of the Centro International de Agricultura Tropical (CI AT), has drawn up a plan for strengthening the research and development capacity, with the objective of improving cassava production in...


Nguyen Huu HyPham, Van BienNguyen The DangThai Phien[Recent progress in cassava agronomy research in Vietnam]Recent progress in cassava agronomy research in Vietnam

Through cooperation with CIAT, national programs in China have paid more and more attention to cassava agronomy research and a lot of progress has been made. This paper describes briefly the most common cropping systems and production practices presently used by farmers. It also reviews the resul...


Zhang, WeiteLin, XiongLi, KaimianJuang, JieTian, YinongLee, JunFu, Quohui[Cassava agronomy research in China]Cassava agronomy research in China

Over the period 1994-1996, seven batches of seeds and two of meristem tissue cultures were evaluated and selected. As important as root yield is the trait starch content (or dry matter content) if a clone is to be accepted as a starch cultivar. At the time of reporting a number of clones have bee...


Tan, Swee Lian[Varietal improvement and agronomy research in Malaysia]Varietal improvement and agronomy research in Malaysia

This paper presents information from a study on farmers' seed-management practices growing pearl millet in Rajasthan, India. It describes farmers' own crop-improvement activities in regard to yield, quality, and diversity of pearl millet, with emphasis on seed-management strategies, such as intro...


Brocke, Kirsten vomChristinck, AnjaWeltzien, Eva[Opportunities and constraints for participatory plant breeding: Farmers' seed-management strategies and their effect on pearl millet populations in Rajasthan, India]Opportunities and constraints for participatory plant breeding: Farmers' seed-management strategies and their effect on pearl millet populations in Rajasthan, India

This paper describes a participatory plant-breeding (PPB) program for rice in eastern India, targeted at a range of ecosystems. Only a few crosses with large populations were used. Most resources were used on selection by farmers among progeny bulks grown on a research station, but farmers also s...


Kumar, RaviSingh, D.N.Prasad, S.C.Gangwar, J.S.Virk, Daljit S.Witcombe, John R.[Participatory plant breeding in rice in Eastern India]Participatory plant breeding in rice in Eastern India

Los frijoles (Phaseolus vulgaris L.) son un componente fundamental de la dieta y un cultivo importante en todo el Caribe. Las siembras anuales de frijoles en la región exceden 200,000 ha aunque los rendimientos son bajos -de 400 a 900 kg/ha. El frijol es producido casi todo el año en diferentes s...


Beaver, James S.Molina Castañeda, Albeiro[Mejoramiento de frijol para el Caribe]Mejoramiento de frijol para el Caribe

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