Tropical forages: morphoanatomy of plants grown in areas with the death of pasture syndrome/Forrageiras tropicais: anatomia e morfometria de plantas cultivadas em areas com sindrome da morte de pastagens

• Published in: Brazilian journal of biology 2017-11, Vol.77 (4), p.868
• Main Authors: Ribeiro-Junior, N.G, Fagundes, O.S, Benevenuti, A.S, Yamashita, O.M, Rossi, A.A.B, Carvalho, M.A.C, Silva, I.V
• Format: Article
• Language: English
• ISSN: 1519-6984; 1678-4375
• DOI: 10.1590/1519-6984.05116

Roots and leaves of Panicum maximum Tanzania, Mombasa and Massai; Urochloa brizantha Piata, Marandu and Xaraes; Urochloa humidicola Llanero; Urochloa ruziziensis Ruzizienses; Urochloa hybrida Mulato II and Cynodon nlemfuensis Estrela-roxa were analyzed, seeking to identify characters for better adaptation to the environment that may interfere with digestibility of tissue from the point of view of the rumen in cattle. Were planted ten cultivars in a completely randomized blocks with three repetitions. Was collected vegetative material, which histological slides were prepared from middle third of the sections of roots and leaves. Were observed differences (p>0.05) in the roots: higher volume of epidermal cells (28.62 [micro]m) and overall diameter (1926.41 [micro]m) of Llanero; thicker vascular cylinder (975.09 [micro]m) and more protoxylem (42.25) in Estrela-roxa and occurrence of aerenchyma in cultivars Piata, Mulato II, Xaraes, Massai, Llanero and Estrela-roxa; Were found higher proportions of bulliform cells in the leaves (121.07 [micro]m) and thicker leaf mesophyll in U. humidicola Llanero (263.63 [micro]m); higher proportion of sclerenchyma fibers in Xaraes and Marandu; lower results for amount of fibers in P. maximum Massai. We conclude that the cultivars Estrela-roxa, Llanero and Massai have greater adaptability to the environment and better nutritional quality.