Title:	Water strategy improves the inflorescence primordia formation of ’Arra 15’ grapevine in the Brazilian semiarid region.
Authors:	OLIVEIRA, C. P. M. de SIMOES, W. L. CHAVES, A. R. de M. SILVA, J. S. da TEODORO, L. P. R. CAMARGOS, L. S. de GAVA, R. SOBRAL, Y. R. A. TEODORO, P. E.
Affiliation:	CÍNTIA PATRÍCIA MARTINS DE OLIVEIRA, UNESP, Ilha Solteira-SP; WELSON LIMA SIMOES, CPATSA; AGNALDO RODRIGUES DE MELO CHAVES, CNPAE / CPATSA; JUCICLÉIA SOARES DA SILVA; LARISSA PEREIRA RIBEIRO TEODORO, UFMS, Chapadão do Sul, MS; LILIANE SANTOS DE CAMARGOS, UNESP, Ilha Solteira-SP; RICARDO GAVA, UFMS, Chapadão do Sul, MS; YURI RAFAEL ALVES SOBRAL, UNEB, Juazeiro-BA; PAULO EDUARDO TEODORO, UFMS, Chapadão do Sul-MS.
Date Issued:	2024
Citation:	Scientific Reports, v. 14, 6678, 2024.
Description:	Failure in irrigation management of grapevines grown in the Brazilian semiarid region can affect bud fertility. Adequate irrigation, considering both the development of bunches in the current cycle and the formation of fertile buds for subsequent cycles, can bring significant advances to viticulture. Therefore, the objective of this research was to investigate the effect of different irrigation levels during flowering on the formation of buds and potential bunches of ’Arra 15’ grapevine and its relationship with metabolic processes. A field experiment was carried out in a commercial vineyard in Petrolina, Pernambuco, Brazil, during the 2021 and 2022 seasons. The experiment was designed in randomized blocks with four replications and five irrigation levels (70; 85; 100; 115 and 130% of crop evapotranspiration – ETc) during three production cycles. The variables fertile bud, vegetative bud, dead bud, potential fertility of the basal, median, and apical regions of the branches, number of potential bunches, reducing sugar, total soluble sugar, net photosynthesis, stomatal conductance, transpiration, and relative chlorophyll index were evaluated. The 115% ETc irrigation level improved the number of fertile buds and number of potential bunches. Irrigation level above 115% ETc increased gas exchange and relative chlorophyll index, while 70% ETc increased leaf sugar content. The most appropriate irrigation strategy is the application of 115% ETc during the flowering stage, for the increase of fertile buds and potential bunches of the next cycle, without influencing the vine metabolism. Total soluble sugars are a promising indicator of water deficit during flowering and as an indicator of vegetative bud formation for the next cycle.
Thesagro:	Floração Uva Irrigação Vitis Vinifera Fisiologia Vegetal
NAL Thesaurus:	Irrigation management Physiology Plant physiology
Keywords:	Videira Variedade Arra 15 Formação de gemas Formação de cachos Gemas férteis Manejo da irrigação Fisiologia da videira Déficit hídrico
DOI:	https://doi.org/10.1038/s41598-024-57215-7
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPATSA)