Departamento de Zootecnia, Universidade Federal do Piauí, Professora Cinobelina Elvas Campus, Bom Jesus, Piauí, Brazil.
Instituto Nacional do Semiárido, Campina Grande, Paraíba, Brazil.
Sci Rep. 2020 Jun 22;10(1):10040. doi: 10.1038/s41598-020-66972-0.
The cactus pear has demonstrated productive potential in arid and semi-arid regions due to its photosynthetic process of crassulacean acid metabolism. Thus, this study aimed to evaluate agronomic characteristics and chemical composition of three genotypes of cactus pear at different locations of a tropical semiarid region classified as non-suitable for cactus pear cultivation. A completely randomized design in a factorial arrangement (3 × 7) (three genotypes of cactus pear [Miúda, Baiana (Nopalea cochenillifera) and Orelha de Efefante Mexicana - OEM (Opuntia stricta)] and seven locations) was used. The climatic conditions characterized an environment that restricts the growth of cactus pear genotypes, mainly due to the air relative humidity values. All morphological characteristics of the cactus pear genotypes were influenced by the interaction genotype x location, with higher expression of the characteristics on the different genotypes under hot semi-arid climate and tropical wet and dry climate. An effect of the interaction genotype x location was observed (p < 0.05) on water use efficiency, water accumulation and carrying capacity, where the highest values were observed for genotype Baiana at location 1. Also, there was influence of the interaction genotype x location over the chemical composition of the cactus pear. The cultivation of cactus pear is recommended under restricted climatic conditions in semi-arid tropical regions, especially the genotype Baiana, based on growth factors, biomass production and chemical composition.
由于其景天酸代谢的光合作用过程，仙人掌梨在干旱和半干旱地区表现出了生产力潜力。因此，本研究旨在评估三种仙人掌梨基因型在热带半干旱地区不同地点的农艺特性和化学成分，该地区被归类为不适合仙人掌梨种植。采用完全随机设计的析因安排（3×7）（三种仙人掌梨基因型[Miúda、Baiana（Nopalea cochenillifera）和Orelha de Efefante Mexicana- OEM（Opuntia stricta）]和七个地点）。气候条件形成了一个限制仙人掌梨基因型生长的环境，主要是由于空气相对湿度值。仙人掌梨基因型的所有形态特征都受到基因型与地点相互作用的影响，在热半干旱气候和热带干湿气候下，不同基因型的特征表现更为明显。观察到基因型与地点相互作用对水利用效率、水分积累和承载能力有影响（p<0.05），在 1 号地点，Baiana 基因型的数值最高。此外，仙人掌梨的化学成分也受到基因型与地点相互作用的影响。建议在半干旱热带地区的受限气候条件下种植仙人掌梨，特别是 Baiana 基因型，这是基于生长因素、生物量生产和化学成分。
