Data/hora: 13/06/2024 13:23:10

Biblioteca(s): 	Embrapa Soja.	
Data corrente: 	17/11/1992	
Data da última atualização: 	17/11/1992	
Autoria: 	SINGH, S. B.; LABANA, K. S.; VIRK, D. S.	
Afiliação: 	Department of Plant Breeding, Punjab Agricultural University, Ludhiana 141 004.	
Título: 	Heterosis in variety x inbred crosses of sunflower.	
Ano de publicação: 	1984	
Fonte/Imprenta: 	Crop Improvement, v.11, n.1, p.35-38, 1984.	
Idioma: 	Inglês	
Conteúdo: 	The extent and frequency of heterosis was studied in 66 variety x inbred crosses of sunflower (Helianthus annuus L.) involving 22 open-pollinated varieties as females crossed with three inbred testers derived from Romsun, EC 97921 and EC 101363 tested under high (90 kg N/ha) and optimum (50 kg N/ha) levels of fertility. Significant heterosis was observed for all nine traits studied. The extent of heterosis in F1 was correlated with the performance of better parent for days to maturity, head diameter and shelling percentage. The extent of heterosis ranged from 47-206% for yield and 5-55% for other traits and with a frequency of occurrence of 5.58%. In general, low x low or average x low cross combinations showed high heterosis. The high extent of observed heterosis indicated the possibility of developing variety x inbred cross hybrids in sunflower.	
Palavras-Chave: 	Heterose; Oil content; Sunflower; Teor; Variety x inbred crosses.	
Thesagro: 	Girassol; Helianthus Annuus; Óleo.	
Thesaurus Nal: 	heterosis.	
Categoria do assunto: 	--	
Registro original: 	Embrapa Soja (CNPSO)	
Exemplares: 	CNPSO - (14255-1) - ADC - SP - -- - 9845 -  - 9845 - DIS