Data/hora: 01/06/2024 13:06:25

Provedor de dados: 	65	
País: 	Brazil	
Título: 	Impact of cyclic water stress on growth, physiological responses and yield of rice (Oryza sativa L.) grown in tropical environment	
Autores: 	Zain,Nurul Amalina Mohd; Ismail,Mohd Razi; Puteh,Adam; Mahmood,Maziah; Islam,M Robiul.	
Data: 	2014-12-01	
Ano: 	2014	
Palavras-chave: 	Water stress; Prolein accumulation; Antioxidant enzyme; Rice variety MR220.	
Resumo: 	A series of water stress cycles [5, 10, 15, 20, 25 and 30 days of irrigation intervel including control flooded (CF), control saturated (CS)] were exposed to investigate the impact of cyclic water stress on growth, physiological responses and yield of a famous Malaysian rice variety, MR220. The study also aimed to determine optimum irrigation schedule for better production of rice. It was observed that grain yield, total biomass, filled spikelet, 1000 grain weight, total panicle, tillers mortality, plant height and number of tillers per plant reduces with increased duration of water stress cycles. Grain yield was higher both in CF and CS condition and those are statistically identical to 5 days of stress cycle or irrigation intervel. The present experiment shows that growth performance and physiological activities of rice differ marginally for 5 days of irrigation difference, exceding that time would reduce yield significantly. The study also showed that proline accumulation and malondialdehyde (MDA) contents in levels increased with increasing duration of water stress cycle. Depending on the findings of the present, it can be stated that rice variety MR220 do not require flooding irrigation and irrigation cycle of 5 days interval is more apprapriate to increase water use and higher yield of rice	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014001202136	
Editor: 	Universidade Federal de Santa Maria	
Relação: 	10.1590/0103-8478cr20131154	
Formato: 	text/html	
Fonte: 	Ciência Rural  v.44 n.12 2014	
Fonte: 	info:eu-repo/semantics/openAccess