Variation in leaf quality of elephant grass (Pennisetum purpureum) and elephant grass x pearl millet hybrids (P. purpureum x P. glaucum) as related to plant age

Pereira, A.V.; Ferreira, R. de P.; Passos, L.P.; Freitas, V. de P.; Verneque, R. da S.; Barra, R.B.; Paula e Silva, C.H. de

Ciencia e Agrotecnologia 24(2): 490-499


ISSN/ISBN: 1413-7054
Accession: 003608711

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The effects of plant age (30, 45, 60, 75 and 90 days old) on leaf dry matter (DM), crude protein (CP), neutral detergent fibre (NDF) and acid detergent fibre (ADF) contents of 11 P. purpureum cultivars and interspecific hybrids (P. purpureum x P. glaucum) were determined. The DM, NDF and ADF contents increased with plant age while CP recorded a slight decrease. The interspecific hybrid (Merker x 23 A), recorded a higher CP content, and lower NDF and ADF contents, indicating the high potential of P. glaucum germplasm for elephant grass improvement. Cluster analysis was used to estimate the genetic variability among the cultivars.