Publication Date
1985
Location
Kyoto Japan
Description
Results of the adaptation of 4 grass and 11 legume accessions evaluated from 1980-84 in 16 sites throughout the Latin American humid tropics are presented. Multilocational analysis of adaptability and yield stability index (YSI) was performed on dry matter yield at 12 weeks regrowth across locations and time, respectively. Legumes were classified in three groups. The first one (Stylosanthes guianensis CIAT 136-184, Zamia Jatifolia CIAT 728) had wide adaptability, high productivity and capacity to respond to quality changes of the environment. The second group (Desmodium ovalifolium CIAT 350, Stylosanthes capitata CIAT 1097-1405, Centrosema pubescens CIAT 438, and Pueraria phaseoloides CIAT 9900) had intermediate productivity and response to environmental quality. The last one ( C. pubescens "common", Calopogonium mucunoides "common", and Desmodium heterophyllum CIAT 349), fell into the group with low productivity and response to the quality of the environment. Among grasses, Andropogon gayanus CIAT 621 andBrachiaria humidicola CIAT 679 outyielded the other grasses. A gayanus CIAT 621 and B. humidicola CIAT 679 showed the highest YSI among grasses, while Brachiaria decumbens CIAT 606 and Panicum maximum CIAT 604 showed low YSI indicating a reduction in DM yield with time. All legumes showed a YSI> 1 during the maximum rainfall period and an average YSI of 1.2 during the minimum rainfall period, ranging from 0.6 for S. capitata CIAT 1405 to 2.0 for D. heterophyllum CIAT 349. Adaptability and yield stability are considered important attributes of pasture plants for the humid tropics.
Citation
Pizarro, E A.; Toledo, J M.; and Amezquita, M C., "Adaptation of Grasses and Legumes to the Humid Tropics of America" (1985). IGC Proceedings (1985-2023). 7.
(URL: https://uknowledge.uky.edu/igc/1985/ses15/7)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Adaptation of Grasses and Legumes to the Humid Tropics of America
Kyoto Japan
Results of the adaptation of 4 grass and 11 legume accessions evaluated from 1980-84 in 16 sites throughout the Latin American humid tropics are presented. Multilocational analysis of adaptability and yield stability index (YSI) was performed on dry matter yield at 12 weeks regrowth across locations and time, respectively. Legumes were classified in three groups. The first one (Stylosanthes guianensis CIAT 136-184, Zamia Jatifolia CIAT 728) had wide adaptability, high productivity and capacity to respond to quality changes of the environment. The second group (Desmodium ovalifolium CIAT 350, Stylosanthes capitata CIAT 1097-1405, Centrosema pubescens CIAT 438, and Pueraria phaseoloides CIAT 9900) had intermediate productivity and response to environmental quality. The last one ( C. pubescens "common", Calopogonium mucunoides "common", and Desmodium heterophyllum CIAT 349), fell into the group with low productivity and response to the quality of the environment. Among grasses, Andropogon gayanus CIAT 621 andBrachiaria humidicola CIAT 679 outyielded the other grasses. A gayanus CIAT 621 and B. humidicola CIAT 679 showed the highest YSI among grasses, while Brachiaria decumbens CIAT 606 and Panicum maximum CIAT 604 showed low YSI indicating a reduction in DM yield with time. All legumes showed a YSI> 1 during the maximum rainfall period and an average YSI of 1.2 during the minimum rainfall period, ranging from 0.6 for S. capitata CIAT 1405 to 2.0 for D. heterophyllum CIAT 349. Adaptability and yield stability are considered important attributes of pasture plants for the humid tropics.
