Synchronization of protoplasts from Glycine max (L.) Merr. and Brassica napus (L.)

Planta ◽  
1986 ◽  
Vol 168 (2) ◽  
pp. 273-280 ◽  
Author(s):  
G. Weber ◽  
E. de Groot ◽  
H. -G. Schweiger
1986 ◽  
Vol 66 (3) ◽  
pp. 425-430 ◽  
Author(s):  
R. R. DUNCAN ◽  
C. S. HOVELAND

Since rainfall generally exceeds 500 mm during the winter months and soil erosion is a problem in the southern U.S.A., a cover crop is essential to reduce soil losses. Continuous cultivation of a crop on the same land also provides the opportunity for pest problems to develop. A winter rapeseed (Brassica napus L.)-grain sorghum (Sorghum bicolor (L). Moench.) double-cropping system was investigated in the field from 1981 to 1984. Conventional tillage (CT) and no-till (NT) systems were used for both crops. Gullivar rape was planted in October and harvested in June. Winter rapeseed yields averaged 2.87 t ha−1 on CT plots in 1982. Averaged over 1983 and 1984, rape yields were 1.66 and 0.73 t ha−1 on CT and NT plots, respectively. However, the seeding method biased the rapeseed performance. Problems were encountered with winter weed control and pod shattering in the winter rape plots. Two sorghum hybrids, R. C. Young Oro Txtra and Funks G-550, were planted in June and harvested in October. Grain yields were not significantly different between hybrids (Oro 5.69 t ha−1, Funk 5.67 t ha−1) or between tillage systems (CT 5.59 t ha−1, NT 5.78 t ha−1). Grain yield differences were noted for year × hybrid × tillage interactions. Rape was a weed problem in the sorghum plots. The winter rape-sorghum double-cropping system offers an alternative to current winter small grains-sorghum/soybean (Glycine max (L.) Merr.) or winter annual legume-sorghum/soybean (Glycine max (L.) Merr.) systems; however, markets for the winter rapeseed and production economic analyses are needed prior to adoption of the system. Additional winter rapeseed research is needed to evaluate yields properly under NT conditions.Key words: Sorghum bicolor (L.) Moench, Brassica napus L., conservation tillage, multiple cropping, sorghum, rapeseed


2015 ◽  
Vol 6 (2) ◽  
pp. 153
Author(s):  
David Guadalupe Reta Sánchez ◽  
Uriel Figueroa Viramontes ◽  
J. Santos Serrato Corona ◽  
Héctor Mario Quiroga Garza ◽  
Arturo Gaytán Mascorro ◽  
...  

Los sistemas de producción de forrajes se pueden mejorar con la incorporación de especies alternativas con altos atributos nutricionales. El objetivo del estudio fue evaluar el potencial forrajero y productividad del agua (PA) en patrones de cultivos forrajeros que incluyeron canola (Brassica napus L.), chícharo (Pisum sativum L.) y soya (Glycine max L.) como cultivos alternativos. Se compararon los patrones alternativos maíz-maíz-canola, sorgo-sorgo-canola, maíz-maíz-chícharo y soya-maíz-avena con los patrones convencionales, alfalfa, maíz-avena y maíz-maíz-avena. El estudio se realizó de abril de 2009 a abril de 2011 en Matamoros, Coahuila, México. Se determinó la composición química del forraje, los rendimientos de materia seca (MS), nutrientes y PA en la producción de MS, proteína cruda (PC) y energía neta para lactancia (ENL). La incorporación de canola en los patrones con maíz o sorgo en primavera y verano incrementó el rendimiento de PC (34.4 %) y la PA (33.3 %), sin disminuir los rendimientos de MS y ENL, al compararse con el patrón convencional maíz-maíz-avena. Los patrones que incluyeron canola  registraron mayores rendimientos de MS y ENL, utilizando el 83 % del volumen de agua requerido por alfalfa, pero con menor rendimiento de PC (19 a 25 %). La PA y el rendimiento de PC se incrementaron en el patrón soya-maíz-avena, pero con menores rendimientos de MS y ENL. En los patrones maíz-maíz-chícharo y maíz-maíz-avena los rendimientos de MS y nutrientes y PA fueron similares. Los resultados indican que la incorporación de canola y soya en los sistemas de producción de forrajes incrementa la productividad del agua.


1974 ◽  
Vol 52 (11) ◽  
pp. 2435-2436 ◽  
Author(s):  
K. K. Kartha ◽  
O. L. Gamborg ◽  
F. Constabel ◽  
K. N. Kao

Protoplasts from mesophyll cells of rapeseed plants (Brassica napus L. cv. Zephyr) and cell cultures of soybean (Glycine max (L.) Merr. cv. Mandarin) were induced to fuse and form heterokaryons by using polyethylene glycol. Plastids served as markers to identify heteroplasmic fusion products: the heterokaryons shared the chloroplasts from rapeseed and dense cytoplasm and colorless plastids from the soybean protoplasts. About 19–20% of the total population of viable protoplasts were identified as heterokaryons, some of which divided and formed colonies consisting of up to 10 cells within 10–12 days of culturing.


2010 ◽  
Vol 33 (Especial_4) ◽  
pp. 83
Author(s):  
David G. Reta-Sánchez ◽  
Uriel Figueroa-Viramontes ◽  
Rodolfo Faz-Contreras ◽  
Gregorio Núñez-Hernández ◽  
Arturo Gaytán-Mascorro ◽  
...  

La incorporación de especies alternativas en los sistemas de producción forrajeros puede mejorar la productividad del agua (PA). El objetivo del estudio fue comparar el rendimiento de forraje y la PA de tres sistemas de especies alternativas respecto a dos sistemas tradicionales en la Comarca Lagunera, México. En cada especie se determinó la calidad de forraje y se estimaron los rendimientos y la PA en la producción de materia seca (MS), proteína cruda (PC) y energía neta para lactancia (ENL). Los rendimientos de MS y la ENL de la chicoria (Cichorium intybus L.) fueron similares a los de alfalfa (Medicago sativa L.), pero con menor concentración y rendimiento de PC. El mejor sistema alternativo con especies de ciclo anual, incluyó canola (Brassica napus L.), maíz (Zea mays L.) y soya (Glycine max L. Merr.). Este sistema, con un volumen de agua aplicado similar al de alfalfa, produjo rendimientos de PC iguales (P > 0.05) a los de alfalfa, pero con mayores rendimientos de MS (62 %) y ENL (77 %); por tanto, los valores de la PA en producción de MS y ENL se incrementaron en 60 y 75 %, respectivamente.


2015 ◽  
Vol 7 (23) ◽  
pp. 9773-9778 ◽  
Author(s):  
Polyana B. F. Biondo ◽  
Vanessa J. dos Santos ◽  
Paula F. Montanher ◽  
Oscar de O. S. Junior ◽  
Makoto Matsushita ◽  
...  

A fast, easy lipid extraction method using low-toxicity solvents is developed in this study for oilseed samples rich in polyunsaturated fatty acid.


2019 ◽  
Vol 81 (2) ◽  
pp. 65-76
Author(s):  
Andrija Špoljar ◽  
Ivka Kvaternjak ◽  
Drago Žibrin ◽  
Mužić Mirjana

Tijekom 2018. godine na pokušalištu Visokog gospodarskog učilišta u Križevcima istraživan je utjecaj uzgoja kukuruza (Zea mays L.), soje (Glycine max. L.) i uljane repice (Brassica napus L.) na reakciju (pH u vodi i 1 MKCl-u) i električnu provodljivost (EC) tla. Istraživanja su provedena na hipogleju mineralnom nekarbonatnom ilovaste teksture. U tri su navrata tijekom vegetacije iz golog tla (crni ugar) i neposredno uz korijenov sustav biljaka uzeti prosječni uzorci od 0 do 30 cm i od 30 do 60 cm dubine. Iz njih je u laboratoriju određena pH vrijednost u vodi i 1 MKCl-u te električna provodljivost tla. Utvrđeno je da istraživane kulture zakiseljavaju tlo, a pri tome najveći učinak ima uljana repica. Kod nje su na obje dubine tla zabilježene uglavnom najmanje vrijednosti pH mjerenog u vodi i 1 MKCl-u te najmanje vrijednosti električne provodljivosti tla. Kod zadnjeg uzorkovanja u odnosu na početno stanje na svim su varijantama do 30 cm dubine tla utvrđene veće vrijednosti reakcije tla i uglavnom manje vrijednosti električne provodljivosti, što može biti rezultat pretežno vlažnog razdoblja u odnosu na suho tijekom vegetacije.


Author(s):  
Paul Gregoire ◽  
Jonathan D. Rosset ◽  
Robert H. Gulden

Canola (Brassica napus L.) and soybean [Glycine max (L.) Merr.] are currently two of the three most common crops grown in Manitoba which comprises the eastern regions of the Canadian Prairies. Volunteer B. napus is a prominent weed in soybean in Manitoba and glyphosate-resistant (GR) volunteer B. napus often is the only weed remaining after in-crop weed control with glyphosate in soybean. Additive-series field experiments were established at three locations in Manitoba in 2012 and 2013 to study volunteer B. napus interference with soybean and develop action and economic thresholds for this weed. Soybean were planted in narrow- (25-cm) or wide- (75-cm) row spacing and glyphosate-resistant B. napus seed was broadcast at densities of 0, 10, 20, 40, 80, 160, 320 and 640 seeds m-2 at the time of soybean planting. Development of soybean and volunteer B. napus were determined throughout the growing season and seed yield of both species was determined at their respective physiological maturity. Volunteer B. napus is highly competitive with soybean as action (< 9 plants m-2) and economic (< 5 plants m-2) thresholds were low. At these action thresholds, volunteer B. napus seed return to the weed seedbank was on average 14,400 seeds m-2 and 10,400 seeds m-2 in narrow and wide row soybean, respectively.


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