Data/hora: 10/06/2024 01:38:56

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Root growth and carbohydrate partitioning in cotton subjected to shading in the initial phase	
Autores: 	Echer,Fábio Rafael; Zanfolin,Priscila Roberta Leme; Moreira,Ana Carolina Monico; Santos,Ana Cláudia Pacheco; Gorni,Pedro Henrique.	
Data: 	2019-01-01	
Ano: 	2019	
Palavras-chave: 	Root length; Dry weight; Radiation.	
Resumo: 	ABSTRACT:  Cotton cultivation in Brazil tends to occur mostly in the rainy season, and at the time of developing the crop there are often prolonged periods of low solar radiation. The objective of this work was to evaluate the root development of cotton cultivars subjected to shading in the initial phase. The experiment was carried out in a greenhouse, using rhizotrons. The experimental design was a 2x2 factorial in randomized blocks with five replications. The treatments were composed of cotton cultivars TMG 1WS (early) and TMG 8WS (late) and luminosity conditions: non-shaded and shaded (50% reduction of luminosity). There were no interactions between the factors “shading” and “cultivars” for any parameter evaluated. Shading reduced total and lateral root growth from the 21 days after emergence (DAE) and the main root at 24DAE. Shading caused reductions in length (60%), surface (65%), mean diameter (15%), root volume (69%), root dry matter mass (83%) and shoot (64%), as well as decreasing the content (36%) and the accumulation of carbohydrates in the shoot (73%). Shading at early cotton development reduces the shoot carbohydrates production, affecting dry matter accumulation and root growth, and this response is independent of the cultivar.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100200	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20180749	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.49 n.1 2019	
Fonte: 	info:eu-repo/semantics/openAccess