Ribeiro-Júnior N G, Fagundes O S, Benevenuti A S, Yamashita O M, Rossi A A B, Carvalho M A C, Silva I V
Programa de Pós-graduação em Biodiversidade e Agroecossistemas Amazônicos, Universidade do Estado de Mato Grosso - UNEMAT, Avenida Perimetral Rogério Silva, 4930, Bairro Flamboyant, CEP 78580-000, Alta Floresta, MT, Brazil.
Laboratório de Biologia Vegetal, Faculdade de Ciências Biológicas e Agrárias, Universidade do Estado de Mato Grosso - UNEMAT, Avenida Perimetral Rogério Silva, 4930, Bairro Flamboyant, CEP 78580-000, Alta Floresta, MT, Brazil.
Braz J Biol. 2017 Nov;77(4):868-875. doi: 10.1590/1519-6984.05116. Epub 2017 May 4.
Roots and leaves of Panicum maximum Tanzânia, Mombaça and Massai; Urochloa brizantha Piatã, Marandu and Xaraés; 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 µm) and overall diameter (1926.41 µm) of Llanero; thicker vascular cylinder (975.09 µm) and more protoxylem (42.25) in Estrela-roxa and occurrence of aerenchyma in cultivars Piatã, Mulato II, Xaraés, Massai, Llanero and Estrela-roxa; Were found higher proportions of bulliform cells in the leaves (121.07 µm) and thicker leaf mesophyll in U. humidicola Llanero (263.63 µm); higher proportion of sclerenchyma fibers in Xaraés 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.
对坦桑尼亚、蒙巴萨和马赛的大黍；皮亚塔、马兰杜和沙拉埃斯的臂形草；利亚内罗的湿生臂形草；鲁齐兹臂形草；穆拉托二号杂交臂形草以及紫叶狗牙根进行了根和叶的分析，旨在确定有助于更好适应环境的特征，从瘤胃角度来看，这些特征可能会影响牛组织的消化率。在完全随机区组中种植了10个品种，重复三次。采集了营养物质，从根和叶的中间三分之一处制备组织学载玻片。在根中观察到差异（p>0.05）：利亚内罗的表皮细胞体积更大（28.62微米），总体直径更大（1926.41微米）；紫叶狗牙根的维管束鞘更厚（975.09微米），原生木质部更多（42.25个），并且在皮亚塔、穆拉托二号、沙拉埃斯、马赛、利亚内罗和紫叶狗牙根品种中出现通气组织；在叶中发现泡状细胞比例更高（121.07微米），湿生臂形草利亚内罗的叶肉更厚（263.63微米）；沙拉埃斯和马兰杜的厚壁组织纤维比例更高；大黍马赛的纤维含量结果更低。我们得出结论，紫叶狗牙根、利亚内罗和马赛品种对环境具有更强的适应性和更好的营养品质。
