Data/hora: 05/06/2024 08:58:06

Biblioteca(s): | Embrapa Milho e Sorgo.
Data corrente: | 03/02/2022
Data da última atualização: | 03/02/2022
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.
Título: | Sorghum hybrids grown in hydroponics contrast for phosphorus use efficiency.
Ano de publicação: | 2024
Fonte/Imprenta: | Brazilian Journal of Biology, v. 84, e253083, 2024.
DOI: | https://doi.org/10.1590/1519-6984.253083
Idioma: | Inglês
Notas: | Publicado em 2 fev. 2022.
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.
Palavras-Chave: | Estresse abiótico; Fenotipagem; Morfologia radicular; Variabilidade genética.
Thesagro: | Sorghum Bicolor; Sorgo.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/230825/1/Sorghum-hybrids.pdf
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (29767-1) - UPC - AP - DD -  -  -  - DIS