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Development of sustainable selection technology for food legumes under moisture stress environments

By: Yadav, S.S | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico DF (Mexico) | Arnel R. Hallauer International Symposium on Plant Breeding Mexico, D.F. (Mexico) 17-22 Aug 2003.
Contributor(s): Berger, J [coaut.] | Knights, T [coaut.] | Kumar, J [coaut.] | McNeill, D [coaut.] | Metrne, M [coaut.] | Redden, B [coaut.] | Turner, N [coaut.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Mexico, DF (Mexico) CIMMYT : 2003Description: p. 77.Subject(s): Agroecosystems | Cropping systems | Cultivated land | Food crops | Legumes AGROVOC | Productivity | TechnologyDDC classification: 631.53 Summary: At a global level, most food legumes are being cultivated in dry areas and more than 80% of cultivation is rainfed. Therefore, the environmental sustainability under dryland cultivation will depend upon the cropping system which is being adopted in those agro-ecosystems, and the productivity levels of that particular crop under these environments. It is important to increase the productivity level of food legumes for dryland cultivation, which will be possible only with the development of a selection technology for segregating generations and subsequent identification of cultivars for these environments. For this study, the experimental material consisted of more than 1,000 chickpea germplasm lines which were screened under a moisture stress environment. 10 simple crosses, 10 complex crosses and 10 wide crosses were advanced under a multiple stress sick-plot. In the second experiment 90 diverse chickpea genotypes comprising Desi medium seeded, Desi bold seeded, Kabuli bold seeded and Kabuli extra bold seeded were evaluated under rainfed and irrigated environments during 1995-2000 at Division of Genetics, Indian Agricultural Research Institute, New Delhi, India. The results of these experiments indicated that selection for drought tolerance in segregating generations should be carried out only under a moisture stress sick-plot. Secondly, the cultivars which possess wide adaptation showed superior and stable performance under dryland cultivation. Thirdly, the genotypes which showed early vigor, medium early maturity, a high number of branches and pods per plant and high biomass production produce high seed yield under dry conditions. Therefore, it was concluded that drought tolerance is a complex phenomenon and managed by 3-4 traits simultaneously in a food legume chickpea crop. It was also concluded that selection for higher productivity in food legumes for dry areas is possible if rigorous selection at vegetative, reproductive and maturity stages is carried out for 3-4 traits simultaneously and separately under multiple stress sick-plot environments. The genotypes developed through this approach will provide stable higher seed yield under dryland cropping systems which will provide a base for sustainable agro-ecosystems and environmentally friendly production systems.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection 631.53 BOO (Browse shelf) 1 Available Z632399
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At a global level, most food legumes are being cultivated in dry areas and more than 80% of cultivation is rainfed. Therefore, the environmental sustainability under dryland cultivation will depend upon the cropping system which is being adopted in those agro-ecosystems, and the productivity levels of that particular crop under these environments. It is important to increase the productivity level of food legumes for dryland cultivation, which will be possible only with the development of a selection technology for segregating generations and subsequent identification of cultivars for these environments. For this study, the experimental material consisted of more than 1,000 chickpea germplasm lines which were screened under a moisture stress environment. 10 simple crosses, 10 complex crosses and 10 wide crosses were advanced under a multiple stress sick-plot. In the second experiment 90 diverse chickpea genotypes comprising Desi medium seeded, Desi bold seeded, Kabuli bold seeded and Kabuli extra bold seeded were evaluated under rainfed and irrigated environments during 1995-2000 at Division of Genetics, Indian Agricultural Research Institute, New Delhi, India. The results of these experiments indicated that selection for drought tolerance in segregating generations should be carried out only under a moisture stress sick-plot. Secondly, the cultivars which possess wide adaptation showed superior and stable performance under dryland cultivation. Thirdly, the genotypes which showed early vigor, medium early maturity, a high number of branches and pods per plant and high biomass production produce high seed yield under dry conditions. Therefore, it was concluded that drought tolerance is a complex phenomenon and managed by 3-4 traits simultaneously in a food legume chickpea crop. It was also concluded that selection for higher productivity in food legumes for dry areas is possible if rigorous selection at vegetative, reproductive and maturity stages is carried out for 3-4 traits simultaneously and separately under multiple stress sick-plot environments. The genotypes developed through this approach will provide stable higher seed yield under dryland cropping systems which will provide a base for sustainable agro-ecosystems and environmentally friendly production systems.

English

0309|AGRIS 0301|AL-Maize Program

Juan Carlos Mendieta

CIMMYT Publications Collection

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