Data/hora: 25/06/2024 07:06:25

Biblioteca(s): 	Embrapa Meio-Norte.	
Data corrente: 	06/01/1997	
Data da última atualização: 	30/05/2018	
Autoria: 	CASTRO NETO, M.	
Título: 	Dry matter partitioning of bean (Phaseolus vulgaris L.) and cowpea (Vigna unguiculata (L.) Walp.) under water deficit conditions.	
Ano de publicação: 	1991	
Fonte/Imprenta: 	[S.l]: The University of Arizona, 1991.	
Páginas: 	171p.	
Idioma: 	Inglês	
Notas: 	Ph.D. Thesis.	
Conteúdo: 	Produtivity of legume crops grown in semi-arid regions of the world is limited by drought. This study was conducted to determine the effect of drought on the physiological and morphorlogical factors associated with productivity of cowpea (Vigna unguiculata (L.) Walp) and bean (Phaseolus vulgaris L.) grown under reduced water levels. Physiological factors measured were photosynthesis, water and osmotic potential, translocation, relative growth rates and dry matter partitioning. Morphological traits of pode and seeds were stutied with scanning electron microscops. Field and glasshouse experiments were conducted under light, temperature, and irrigation regimes. Water stress caused reduction of seed yield in cowpea and bean plants by decressing total biomass and photosynthesis. Bean water potential and turgor of source leaf, pod walls, and seed were similar for both stressed and nonstressed plants over the reproducive period. In both bean and cowpea, partitioning of the total above ground dry matter was similar for both stressed and nonstressed plants. Photosynthetic rates of single leaves from either cowpea or bean were greater for nonstressed than stressed plants.	
Palavras-Chave: 	Bean; Cowpea; Stress hidrico.	
Thesagro: 	Água; Feijão; Phaseolus Vulgaris; Vigna Unguiculata.	
Categoria do assunto: 	X Pesquisa, Tecnologia e Engenharia	
Registro original: 	Embrapa Meio-Norte (CPAMN)	
Exemplares: 	CPAMN - (1939-1) - ADD - TS - PP - T35/91 -  - 1991.00035 - DIS