Título:	Sorghum hybrids grown in hydroponics contrast for phosphorus use efficiency.
Autoria:	SILVA, K. J. SANTOS, C. V. MENEZES, C. B. de SOUSA, S. M. de
Afiliação:	Universidade Federal de Viçosa; CICERO BESERRA DE MENEZES, CNPMS; SYLVIA MORAIS DE SOUSA TINOCO, CNPMS.
Ano de publicação:	2024
Referência:	Brazilian Journal of Biology, v. 84, e253083, 2024.
Conteúdo:	Phosphorus (P) use efficiency is crucial for sorghum production. P acquisition efficiency is the most important component of P use efficiency. The early-stage evaluation of plant development is a useful tool for identifying P-efficient genotypes. This study aimed to identify sorghum hybrids that are efficient in P use efficiency and assess the genetic diversity among hybrids based on traits related to P acquisition efficiency. Thus, 38 sorghum hybrids and two inbred lines (checks) were evaluated under low and high P in a paper pouch system with nutrient solution. Biomass and root traits related to P efficiency were measured. There was no interaction between genotypes and P levels concerning all evaluated traits. The biomass and root traits, except root diameter, presented smaller means under low P than high P. Efficient and inefficient hybrids under each P level were identified. The genetic diversity assessment grouped these genotypes in different clusters. The hybrids AG1090, MSK326, AG1060, 1G100, AS 4639, DKB 540, and DKB 590 were superior under low-P and high-P. Hybrids SC121, 1236020 e 1167017 presented the lowest means than all other hybrids, under both conditions. The evaluated hybrids showed phenotypic diversity for traits related to P acquisition, such as root length and root surface area, which can be useful for establishing selection strategies for sorghum breeding programs and increasing P use efficiency.
Thesagro:	Sorgo Sorghum Bicolor
Palavras-chave:	Estresse abiótico Fenotipagem Variabilidade genética Morfologia radicular
Digital Object Identifier:	https://doi.org/10.1590/1519-6984.253083
Notas:	Publicado em 2 fev. 2022.
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPMS)