Produccion de semilla de pastos tropicales en el sur de Jalisco, Mexico.
1996
Eguiarte Vazquez Juan Alfonso | Gonzalez A.
An experiment was carried out in southern Jalisco, Mexico, to determine the seed production of tropical grasses. A completely randomized design with three replications was used. Tukey's test (P less than 0.05) was applied to compare the differences with accessions of Andropogon (CIAT 621, INIFAP 11, 24, 21, and 39); Panicum coloratum (INIFAP 183 and 184); P. maximum Comun; and Cenchrus ciliaris (Biloela and Americano). When comparing A. gayanus accessions, pure seed production differed significantly (P less than 0.05), the best accessions being A. gayanus CIAT 621 (54 kg/ha), INIFAP 11 (61 kg/ha), and INIFAP 39 (42 kg/ha). The number of spikelets ranged from 81 to 103/m(2) for A. gayanus INIFAP 21 and CIAT 621, respectively. When comparing Panicum accessions, the variables analyzed-pure seed and number of spikelets-did not differ significantly (P less than 0.05). Respective values for P. maximum Comun were 77 kg/ha and 101 units/m(2); P. coloratum INIFAP 184, 70 kg/ha and 93 units/m(2); and P. coloratum INIFAP 183, 68 kg/ha and 118 units/m(2). In the case of C. ciliaris, pure seed production was significantly higher (P less than 0.05) in cv. Biloela (40 kg/ha) than in cv. Americano (34 kg/ha). The number of spikelets did not differ significantly (P more than 0.05) between cv. Biloela (127) and cv. Americano (111).
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