scholarly journals Atmospheric H2S and SO2 as sulfur source for Brassica juncea and Brassica rapa: impact on the glucosinolate composition

2015 ◽  
Vol 6 ◽  
Author(s):  
Tahereh Aghajanzadeh ◽  
Stanislav Kopriva ◽  
Malcolm J. Hawkesford ◽  
Anna Koprivova ◽  
Luit J. De Kok
Keyword(s):  
Brassica Juncea ◽  
Brassica Rapa ◽  
Sulfur Source

Mineral composition of oil-free seeds of Brassica napus, B. rapa and B. juncea as affected by location and year

1999 ◽  
Vol 79 (3) ◽  
pp. 405-408 ◽  
Author(s):  
J. M. Bell ◽  
G. Rakow ◽  
R. K. Downey
Keyword(s):  
Brassica Napus ◽  
Key Words ◽  
Brassica Juncea ◽  
Mineral Composition ◽  
Brassica Rapa ◽  
Mineral Content ◽  
The Other ◽  
Fe And Mn ◽  
Mineral Levels ◽  
Cu And Zn

Three cultivars of Brassica (Westar, Brassica napus; Tobin, B. rapa; Cutlass, B. juncea) were grown in four locations in 4 successive years, with duplicate samples taken from each treatment. Harvested seed was hexane-extracted, ground and analyzed for mineral content. The average contents (mg kg−1) were: Ca, 0.64; P, 1.12; Mg, 0.56%; Cu, 6.2; Zn, 46; Fe, 188; and Mn, 55. Values for Westar and Tobin were generally similar but Cutlass contained less Ca, Mg, Fe and Mn and more Cu and Zn (P < 0.01). Locations affected all mineral levels. One location produced samples lower in Ca, P, Cu and Mn but higher in Zn than the other locations (P < 0.01). Year-to-year variability was of minor consequence. Key words: Brassica napus, Brassica rapa, Brassica juncea, mineral, seed

SUSCEPTIBILITIES OF SPECIES AND CULTIVARS OF CANOLA AND MUSTARD TO INFESTATION BY ROOT MAGGOTS (DELIA SPP.) (DIPTERA: ANTHOMYIIDAE)

1994 ◽  
Vol 126 (2) ◽  
pp. 251-260 ◽  
Author(s):  
L.M. Dosdall ◽  
M.J. Herbut ◽  
N.T. Cowle
Keyword(s):  
Brassica Napus ◽  
Quantitative Determination ◽  
Brassica Juncea ◽  
Brassica Rapa ◽  
Growing Season ◽  
Sinapis Alba ◽  
Root Damage ◽  
Population Densities ◽  
Short Growing Season

AbstractFour species of Cruciferae [canola species Brassica rapa L. and Brassica napus L., and mustard species Brassica juncea (L.) and Sinapis alba L.], and various cultivars of each species, were evaluated for susceptibilities to infestation by Delia spp. (Diptera: Anthomyiidae) under field conditions in central Alberta, Canada. Susceptibility was measured throughout the season by recording numbers of eggs of Delia spp. laid on or near individual plants, and at the end of the season by a semi-quantitative determination of injury inflicted by larvae on taproots. Differences in susceptibility occurred among and within canola and mustard species. Plants of B. rapa were most susceptible to Delia spp.; both mean eggs per plant and mean damage ratings per plant on B. rapa significantly exceeded those of all other species studied. Intermediate susceptibility was observed for plants of B. napus and B. juncea; plants of S. alba were least susceptible. In general, differences in susceptibility were greater among species than among cultivars within species. Root damage generally correlated with oviposition among and within species, suggesting that the mechanism of resistance by cruciferous species to infestation by Delia spp. is antixenosis or nonpreference. Results of this study indicate that canola growers in regions infested annually by high population densities of Delia spp. should seed B. napus or B. juncea rather than B. rapa. However, if a short growing season necessitates seeding B. rapa, then growers should select the more resistant cultivars of this species.

scholarly journals Identification of Resistance to Peppery Leaf Spot among Brassica juncea and Brassica rapa Plant Introductions

HortScience ◽  
2007 ◽  
Vol 42 (5) ◽  
pp. 1140-1143 ◽  
Author(s):  
W. Patrick Wechter ◽  
Mark W. Farnham ◽  
J. Powell Smith ◽  
Anthony P. Keinath
Keyword(s):  
Brassica Juncea ◽  
Pseudomonas Syringae ◽  
Brassica Rapa ◽  
Leaf Spot ◽  
Plant Introduction ◽  
Leafy Vegetables ◽  
Leaf Spot Disease ◽  
Disease Symptoms ◽  
Plant Introductions ◽  
Leafy Greens

Brassica leafy greens (Brassica juncea L. and Brassica rapa L.) represent one of the most economically important vegetable crop groups in the southeastern United States. In the last 10 years, numerous occurrences of a leaf-spot disease on these leafy vegetables have been reported in several states. This disease, known as peppery leaf spot, is now causing serious crop losses and has been attributed to the bacterial phytopathogen Pseudomonas syringae pv. maculicola (Psm). To date, it appears that all cultivars of the Brassica leafy greens are susceptible, and available pesticides for control of this disease appear unable to reduce the disease to acceptable levels. Thus, we undertook a search for potential resistance to this disease among accessions of B. juncea and B. rapa included in the U.S. Plant Introduction (PI) collection. In greenhouse trials, we screened commercial cultivars and 672 U.S. PIs (226 B. juncea and 446 B. rapa) for resistance to Psm with artificial inoculation. Although severity of disease symptoms was significantly different among inoculated accessions, no acceptable levels of resistance were found in any of the more than 400 B. rapa accessions tested. Only two B. juncea accessions (PI 195553 and G 30988) of 226 tested had acceptable levels of resistance that might prove economically useful.

Could Brassica rapa, Brassica juncea and Sinapis alba facilitate the control of the cabbage seed weevil in oilseed rape crops?

2013 ◽  
Vol 65 (1) ◽  
pp. 124-129 ◽  
Author(s):  
Gabriella Kovács ◽  
Riina Kaasik ◽  
Luule Metspalu ◽  
Ingrid H. Williams ◽  
Anne Luik ◽  
...  
Keyword(s):  
Brassica Juncea ◽  
Brassica Rapa ◽  
Oilseed Rape ◽  
Sinapis Alba ◽  
Cabbage Seed Weevil ◽  
Cabbage Seed

scholarly journals SYNTHESIS OF AN AMPHIDIPLOID BRASSICA SPECIES

HortScience ◽  
1990 ◽  
Vol 25 (9) ◽  
pp. 1116c-1116
Author(s):  
Tamara Thomsen
Keyword(s):  
Brassica Juncea ◽  
Brassica Rapa ◽  
Brassica Species ◽  
Brassica Nigra ◽  
Tetraploid Species ◽  
Male Sterile

Stock species of Brassica rapa and Brassica nigra were crossed with the intention of synthesizing the amphidiploid species Brassica juncea. Of the stock species, a diploid and a tetraploid were given of both the B. rapa (Aaa and Aaaaa) and the B. nigra (Bbb and Bbbbb). However the identity of these was concealed, and they were presented as 1A 1, 1A2, 1A3, and 1A4. The objective of this experiment was not only to synthesize the species B. juncea (Abaabbb), but to determine the identity of 1A1, 1A2, 1A3, and 1A4 as to which of these were the diploid and tetraploid species, and to test the synthesized B. juncea by crossing it with the natural, male sterile B. juncea.

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