Inheritance and agronomic performance of an apetalous flower mutant in Brassica napus L

Euphytica ◽  
2004 ◽  
Vol 137 (3) ◽  
pp. 381-386 ◽  
Author(s):  
Y. Zhao ◽  
M.L. Wang
2021 ◽  
Vol 19 (1) ◽  
pp. 15-25
Author(s):  
S Sultana ◽  
F Mahmud ◽  
M Asaduzzaman

Rapeseed (Brassica napus L.) is the best one in respect of oil production. It is the order of the day to take better steps for production and quality improvement of our local cultivars. Broadening of genetic diversity in spring oilseed Brassica napus L. (AACC, 2n = 38), canola is important for continued improvement of this crop. Sixty-two genotypes in F4 generation of Brassica napus L. were evaluated to assess genetic diversity based on randomized complete block design with three replications at the experimental field of Sher-e-Bangla Agricultural University, Dhaka. Different Multivariate analyses were performed to classify 62 genotypes. On the basis of cluster analysis, all the genotypes were classified in five clusters. The cluster IV comprised the maximum number (19) of genotypes followed by same in cluster II (18). The cluster I and V comprised 10 and 9 genotypes respectively. The lowest number of genotypes was present in cluster II. The highest inter-cluster distance (10.309) was observed between the cluster I and IV and the genotypes of these clusters involved in hybridization may produce a wide spectrum of segregating population. The lowest inter-cluster distance (3.513) was observed between the cluster III and IV. The inter-cluster distances were larger than the intra-cluster distances. Considering cluster distance, inter genotypic distance and other agronomic performance G3, G4, G24, G35 and G51 might be suggested for future breeding program. SAARC J. Agric., 19(1): 15-25 (2021)


1987 ◽  
Vol 67 (2) ◽  
pp. 491-493 ◽  
Author(s):  
A. J. KLASSEN ◽  
R. K. DOWNEY ◽  
J. J. CAPCARA

Westar summer rape (Brassica napus L.), licensed in 1982, is a canola-quality cultivar that combines high seed yield with high oil content and early maturity. Westar is adapted to the B. napus growing areas of western Canada and because of its superior agronomic performance has replaced the older cultivars Regent, Andor and Altex.Key words: Rape (summer), cultivar description


1985 ◽  
Vol 65 (4) ◽  
pp. 889-892 ◽  
Author(s):  
IAN GRANT ◽  
WALLACE D. BEVERSDORF

The agronomic performance of eight triazine-resistant single-cross oilseed rape (B. napus L.) hybrids was evaluated. The yield of most of the hybrids was significantly greater than Atr-Regent; some of the hybirds demonstrated mid-parent heterosis, but none of the eight exhibited high-parent heterosis. In most cases the hybrids were intermediate to the parents for flowering date, plant height, lodging resistance, physiological maturity, percent oil and percent protein.Key words: Brassica napus L., oilseed rape, F1 hybrid, triazine resistance


2021 ◽  
Author(s):  
Valeria Lobos-Sujo ◽  
Robert W. Duncan

Abstract The Ogu-INRA CMS system in canola and rapeseed (Brassica napus L.) uses a cytological variant of the radish- (Raphanus sativus L.) derived Ogu CMS pollination control system introduced through interspecific introgression. The restorers (R-lines) contain an introgression that is associated with poor agronomic performance due to a large undesired segment of the radish chromosome that was introgressed along with the Rfo gene. The introgression contains pentatricopeptide (PPR) motif repeats that confer fertility restoration abilities to the R-lines. The objective of this research was to test the hypothesis that multiple cycles of intermating will result in R-lines with improved agronomic performance. A base population was developed by designing five R-line by R-line crosses. Twelve plants from each initial cross were grown and chain-crossed at random, without selection, other than the presence of the Rfo gene. Twelve flowers from each plant were crossed and the remainder of the plant was selfed. Three intermating crossing cycles (C0, C1 and C2) were completed and each was selfed three times for evaluation. Total pod number, seeds per pod, a visual pod rating, thousand seed weight and yield were evaluated. The visual pod rating showed a positive correlation with seeds per pod. Improvements for all traits were found at C0 and C1 when compared to the best parent. Individual families from two of the crosses showed a yield increase of over 78 % from the best parent. This suggests that improvements in yield components can be obtained from intermating R-lines.


2020 ◽  
Vol 35 (2) ◽  
pp. 158-169
Author(s):  
Arthur Gabriel Caldas Lopes ◽  
Tiago Pereira da Silva Correia ◽  
Karen Pereira da Silva Carneiro ◽  
Alexandre Pinto Ferreira de Almeida Faria ◽  
Francisco Faggion

DESEMPENHO AGRONÔMICO DA CULTURA DA CANOLA EM DIFERENTES ARRANJOS ESPACIAIS DE SEMEADURA NO CERRADO DO PLANALTO CENTRAL   ARTHUR GABRIEL CALDAS LOPES1, TIAGO PEREIRA DA SILVA CORREIA2, KAREN PEREIRA DA SILVA CARNEIRO3, ALEXANDRE PINTO FERREIRA DE ALMEIDA FARIA4, FRANCISCO FAGGION5.     1Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Universitário Darcy Ribeiro ICC – Asa Norte, Cep: 70910-900, Brasília/DF, Brasil. E-mail: [email protected] 2Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Universitário Darcy Ribeiro ICC – Asa Norte, Cep: 70910-900, Brasília/DF, Brasil. E-mail: [email protected] 3Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Universitário Darcy Ribeiro ICC – Asa Norte, Cep: 70910-900, Brasília/DF, Brasil. E-mail: [email protected] 4Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Universitário Darcy Ribeiro ICC – Asa Norte, Cep: 70910-900, Brasília/DF, Brasil. E-mail: [email protected] 5Faculdade de Agronomia e Medicina Veterinária, Universidade de Brasília, Campus Universitário Darcy Ribeiro ICC – Asa Norte, Cep: 70910-900, Brasília/DF, Brasil. E-mail: [email protected] 6O presente artigo é baseado no trabalho de conclusão de curso do autor.   RESUMO: Embora nas regiões sul e sudeste do Brasil já existam e sejam conhecidos resultados de pesquisas com a cultura da canola, no cerrado do planalto central ainda são inexistentes. O objetivo do trabalho foi avaliar a responsividade das características agronômicas e produtividade de grãos de canola em diferentes arranjos espaciais de semeadura no cerrado do planalto central brasileiro. O experimento foi realizado na Fazenda Água Limpa, da Universidade de Brasília, em Brasília – DF. O delineamento experimental foi em blocos casualizados, sendo os tratamentos formados por dois espaçamentos entre linhas (0,25 e 0,5 m) e três densidades de semeadura (25, 35 e 45 plantas por metro), com três repetições por bloco. As sementes utilizadas foram do híbrido Hyola 575CL, semeadas em Latossolo Vermelho Amarelo. Foram realizadas avaliações de altura de plantas (AP), diâmetro de haste (DH), síliquas por planta (SP), massa de mil grãos (MMG) e produtividade de grãos. Os dados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey (P ≥0,05). Os resultados indicaram maior AP para espaçamento de 0,5 m entre linhas e densidade de 45 plantas por metro. Maior DH para espaçamento de 0,5 m entre linhas e densidade de 35 plantas por metro. Maior SP ocorre com espaçamento entre linhas de 0,5 m. A produtividade de grãos é maior com densidade de 35 plantas por metro. A MMG não difere em função dos fatores estudados.   Palavras-chave: Brassica napus L., espaçamento, densidade, produtividade, síliquas.   AGRONOMIC PERFORMANCE OF CANOLA CULTURE IN DIFFERENT SPACIAL ARRANGEMENTS OF SOWING IN CERRADO OF THE CENTRAL PLATEAU   ABSTRACT: Although in southern and southeastern regions of Brazil, research results with canola culture already exist and are known; in the central plateau savannah they are still nonexistent. The objective of the work was to evaluate the responsiveness of agronomic characteristics and productivity of canola grains in different sowing spatial arrangements in Cerrado of central Brazilian plateau. The experiment was carried out at Fazenda Água Limpa, at the University of Brasília, in Brasília - DF. The experimental design was in randomized blocks, with treatments formed by two spacing between lines (0.25 and 0.5 m) and three sowing densities (25, 35 and 45 plants per meter), with three replications per block. The used seeds were from the Hyola 575CL hybrid, sown in Oxisol. Plant height (AP), stem diameter (DH), silica per plant (SP), thousand grain mass (MMG) and grain yield evaluations were carried out. The data were subjected to analysis of variance and the means compared by the Tukey test (P ≥ 0.05). The results indicated a higher AP for 0.5 m spacing between lines and density of 45 plants per meter. Higher DH for 0.5 m spacing between lines and density of 35 plants per meter. Higher SP occurs with 0.5 m line spacing. Grain productivity is higher with a density of 35 plants per meter. MMG does not differ due to the factors studied.   Keywords: Brassica napus L., spacing, density, productivity, silica.


1992 ◽  
Vol 108 (3) ◽  
pp. 256-259 ◽  
Author(s):  
Mo Jianguo ◽  
Li Wanqu ◽  
Wang Jisheng

2019 ◽  
Vol 51 (6) ◽  
Author(s):  
Samrin Gul ◽  
Razi Uddin ◽  
Naqib Ullah Khan ◽  
Shahid Ullah Khan ◽  
Sardar Ali ◽  
...  

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